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 0xeee205e2b81ab72f59aa3ef7dc195a9d76e89f4a2510950dd4a93b164c184b60. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e5ab8fa-0450-440c-b5ec-7409f7472e25.json and https://artists.proofprofile.net/proofs/artist/3e5ab8fa-0450-440c-b5ec-7409f7472e25.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 0x6d0d94cd337c25564f6b217cfad65b64c22c8ef1d31f401de1c1c76cdf9f409e. 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/USCGJ2467348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe22a4814394ed3c0d97602bcc0b6c65e40f329887b9e6effeaf1cca2e32f8d. 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/QZTV32382034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6887ce0215eee2a5e3e116bbcc64266dab11885bbd4d0f9df19dfe20ed851946. 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/QM4TX2439779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c80d60e6bbfb458e1d2caf3972bd44714e00984287ad75e5ad2b9eb55b9404. 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/QZNWV2497136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bad3ed29a9d1742387a1d095cc4723b186a8ef3ccb25f2dda5355858b4460f. 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/QZKDT2400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29382defbe05d0354529379c48e472bd448c2e1ebcb783fbeb6ab8e73e76d386. 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/QZMEN2447563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf733610f9df509dc1bbf6b93051acfd727b366e27c13bf10a3a9355a73ee0a17. 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/QZKDT2400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55846fe3ca0066d1aa7521264a0e2433f6d9155bc41738fb8c82a2b92fa5b796. 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/QZKDT2400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd892ed77b1d8e8ac7bd50f0316b784ba675191aa539fe1cdce70861ac39ee575. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX282416612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c2706192f6ad91da843de9c590e736a048456d14cf17200f57394b4e918d98. 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/QZHNA2413610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce9c1c3b3091068392dd103dade0017df532f93c85832fd77f0a853845e8b09. 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/QZHNA2404255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35075b3f15b8d147d7142001c6f3d22fa7701d6d210c4d1feb7c2f969958d078. 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/QZ5AB2423377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155010bc326edebb57f22d14a0d69b1c24f1f0e951a52b5c210aaa71d6471082. 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/US7VG2486710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25256e7cc19a37b60b4b4829e6cb7dc7397ea596801ece3a7f7e3abf5c193e89. 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/QZFZ62465664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34d98db466fb4b3b53135085162116a5d7ef4d0c835e674204c91d81588bd80. 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/QZTL92435613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaf364541b2f18bb78e3975cbfff13df2c3b23400b7ba96a71c3cd265be8bcd. 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/QZTLA2407035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29f3afa82bcc7a2f27fe2bcd87239ec5278984c10cea1ba8eada46bfe61bc6e. 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/QZFYY2415150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dbda0830b57400a989afa205c7877c9ba033e6838ae9a1895eb2fd6cd2de9d. 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/QZWFQ2358761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd42ce41dfaee0d29dffa9c401edb6289a78007292de98961c227c5bf7410576. 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/QZWFP2362399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7763e416f058a18af18a5a513ab7019d74b75ff517cd015b1b4b35103c2ab27e. 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/QZ7R42354185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf943911394a8a2cb88dfb11af7d6b75b68d38f5d849b140539972821eb44a9. 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/QZTBA2320435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5a347b22957b1375dc322c903e6f30121156f4027c4e7b9cc8f1789b5c3e5d. 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/QZTBA2319267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23e11c2ebde357147286d21e10fe25f3c9f9efe8d02c8e3bd04bc8134e69b6b. 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/QMFME2330497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefffa3f2b405036a20a173c18176093bd67343c5957b2c1f0923646db2f4f14b. 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/QZWDD2336690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5068aa33bc58e8e84d095fe190df57da90d0bb04b891b919ed0fa57fce32b0. 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/QZTAX2350758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038337e3fbfbb956d034c35d36b8a8450ccfa70df264069e5a0f6f4ce22c50a6. 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/QZWDD2355164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a1f240a28e1f7d2a81fb651eb3d9f5a124fe86b4bac9aba1257b4be3f571f0. 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/QZPLS2347482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568e0ec2c5a9bbdd8fe698796741e5e0c368c481669b6ae9cc808543a3c1807b. 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/QZQAY2376742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac8ed888e59a86cf6549db680d6db6a9026fc66ac69c8a921ec93ae09403c62. 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/ES75E2407123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bde5db8f93b8bec59f4ffca99c93bc08f2705eb8db6c868df359addf8c861f7. 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/QZNJX2425057.