1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8604741936d516f00f08fbfe9c2d305517f5f7bcbaec2bda8c10d169371597f1. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cfba3cf-e79c-4b09-be22-a3b119f2c0a8.json and https://artists.proofprofile.net/proofs/artist/4cfba3cf-e79c-4b09-be22-a3b119f2c0a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbd47332ee97f70aa87ca0668128daa0e532bea21bd21348f1d3a079567252f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1334293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a61d6d08cbc715502bb505f2d0119ed761ccd4a7728f5bf8691ab2290ad0248. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82095267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439e3c6256741702600aa2d75187e4c357d1689b7b9d3a1f572d04f525aa473d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad51d5de25c6f5d0e91d1234ff2427db5035ca0dca4c891a621241f4f70ced38. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740a568a1e40c79d3a4504629fb1a630cac406535a65f717ad8bf7efe7a2bc7d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3dbe71a8ec13fa3567680c332d3128de3ae48de23b4c0c520519e2d1194e26. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14d962119936eda8133568fcabf44ef82a59878a8bbd08a15e193cadce711cb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5787b9f7d2e9c700ccde2755ff210d0a94f3c2c3a166bbd484d28c24f1eb1d12. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3ffa0d5a005cc283e8935ab2567caf321035bf17fb2426db974408f93c741e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a501eaac789b0d36fe67be2a23c9b233a8f1aab864f0f0382a1d759b419ff7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9773c5a97f8cd1df65fd23aa4068c2f81ec61ca00b798826d3709e3dc6f67cb2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0c506fe8487c6b715fbf20efed2f12123362aeeffb0f723de8e5f2f6cae8a8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3124e3a4b1c7739873f6dbbd81ed1cab2a613c70ff4557089495d6cd59c27cc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc586e632131a39ecb61bf8c2d3fb43d93265f7ebef5aa22d6d9cbbc0460df98. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06b5208dc6d0fcd70ae0abf8b32f8f61fd835184a0067417be3d3c15dc36435. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330b9ae0209de14c240677d55b6ef5e5ea39f5742474f1fef6d7d79040e0d7ee. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2113a63c36c979b36efcfb69ea8591e4a0294127ebcc645054010950a13bc0f2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1cd1a2ef2f9382a68e05072ed42bc9fb4b438f733f6912edfa1314c9b5f7b6. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efa5999ed95d9a9759c0c71c435373b9523fc0ad029d627c3a9ae6016543682. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdc1030ce464cedecea425489f701fa2c7979272f877f8d7aba397f710d7945. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8887c871ac681ac8a6e3717f9c4f973bd10428670b0f1346c8e429aea53b0e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32001748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45335b0f5f85f919598ac0a3d5ceb188f90fac7dc318ec51b0ecbc51d149de03. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295b39b1be1cd3f880f5521cc4c06a3e755a0b6b16062fd9cf3472c98e9e9b8f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb315011e30d35e24e206a38a7d18ef5df1ce730f1a06bcf9532b42d6ae5180fa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84a97956e7e543e3886b01f33b9d0c2516aa60c0ee1b08fba842f28365460cd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0954ece422e2fa344d4033b958213e0700036584bb5979b458b779611135add8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeff5aa2d616d8e4a15843b36b717cad60f82879e59349024e3e3fe6f0feaf33. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd455f68c98396b1209cb2776d0e5a85d173d3e2ed201914d3fef2a99d8b967d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb12563fa92e276e59f24b3ff81f7231a49c4251e3b08454f96cc90f742ea43. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55641a957dadea5357aa6d7314be00a55bdb84a16b97276497d1a66f42cfb3ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50382d45bdce9679576a5c23174bd8ad0a9d416940eac869d3ac63f75680886e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a62f483f3ac42bc0833d12cd17f7ccd6697c51dac3e1a141a0d7f0926e35ac7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d77fe45a14972532843768e37adf6adb9660faad6633cbc8962b899955e3bb4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae6d02bf01e6a027b98036e9be69df797338bba80ddd878a4040f7eb36cad77. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ed7bc735adc249cb4069730b376f144705e5d77bebafd8d1592fb924e24b84. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15922addc45b071690603401cb7132e73c3022f3bc046362c716f13ca8e9f39. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18b8d7a36f8a5f0f370fd79f456857ec21211c9ba1437de3915edfc168b052f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cc88babf9a7f40cdf224ca54d326674896b622962751f2f7988e97c86c16cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e70767fd44001ff5a26ac0e02659836a644c2ba28c0d45d757a68e4c60e7f77. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ189800287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15d1cd3886843c9c146811e34acd98540fa1f9831c672c2adc62f2a487abec1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ7R41853034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01ddb8ff026e676c6dbb53397082e40ebea7c69d19e1cfaa5b05c8c082ddb18. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ7R41853036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd953123d36522765490d78063419b76925770cdc285d3f2692c0ae05211741a5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ7R41853037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c74f478bcb77b79bb9846237ba0452e5b32093b9dbcc079b95e0f27b2d40a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ7R41853038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669548b189d8e04ac3278d59117a50e3a5c757d52eb00bb3535751b793591378. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ7R41853039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a035b8edba1762f7fed739e0c578cddfa2bafe94b2c3377b907212c450012d7. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ7R41853040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136913c79cbb6644df274c16ed7f539db59fe17c3dfa63bfe68a6b0b71fc0a34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ7R41853041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1640f1ff9e7b01b9bbb6d81e4bc06ff60bc4bbfde0636528f4286ebd438f39. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ7R41853042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac8341b0c3824b97734bf7795a1f8e44f974fc993c6b9035ae2c6aeeb42d317. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ7R41853043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5820bef42aa749127f224d7b15b97b5b5550b6efa1327ec857eb9ea49a3b0180. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2117156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4828b591d4c6e62dc895a2e8bc1081a1ab00842996cf2587e164a1173f9e6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2117157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f74928eec0c426ce30f70ea3e299ac5636da4ad73a868ddf1b315e3552dc34. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2117158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef29ca1cb4c016bfc2fc27c12a489c3837bbb9c8b277583ab0dd20d4da1675a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2117161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73620a07a4697ea6f8b7aa761819587e14a1139244a3eec2a754a22d9fe77c0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1442710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3e2f5b23e5deea9127479b712a1013878c1978abcb70e31c1a9dea1e943857. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1442714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12af8455dde6992224371d160f16885ea41745a8d3820a00bb185e657bd0d705. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1442717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9a05593789e38a77219c1757ee57e44fa9cd8ad68cee409bcf8f1dd0d62263. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1442745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7da39f4a929f0eaa3f94a1dc4fab43b60fd8fa2daacd289bed0dc570a94ae2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1442749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0e2cb72c43c88fa97b7a116229f49c75ef147db32ab619db34a828ef32eb89. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1442723.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch