1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xee657acc23ba72a78a23b9071280d8c340e8228ea288fc9e7f93c778bacbbf8a. 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/124d80f4-72cb-4624-b53d-4bf2e156654a.json and https://artists.proofprofile.net/proofs/artist/124d80f4-72cb-4624-b53d-4bf2e156654a.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 → block OTSBitcoinBlock must exist at that height 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 0xf22e861872cb53d3579ff99415f5c72866e2e637a5c692a4b04368161835357f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USXXS2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee4abb38e75427826dbadbe17b93d6e39b34b4ae1d539427a35503c8006f2d4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USXXS2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6330b7d613f253f62be4dee47f905776e8ea3096e527f24ad1002b86a7aa0814. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USXXS2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bcde8d7b3c4ed1b806534e98ac8a50ead95fd56addf132e34540291145c20b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USXXS2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f15ce9cbfa0841f246199ed48acd65a034ea01513d87687aa049d5b2e118cf. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/USXXS2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bc35d5ffb0a62d3c6687179920e5154f25d45150c202b1ca18c3bc65f73bca. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:15Z), 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/USXXS2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc894085abfc9cf78fe702e67804525725674ef154f33b652778b0676c250d75. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USXXS2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035b07af466558025c0e774aa89994cb9def9b29656cdc3796d3f20566d2aa8a. 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/USXXS2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1685a697f0783ba78081623cfdd0f4134b4ff86784cdc0e470070903dac3d551. 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/DEAM82300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c3567d2f1d79747c74a2bc05380329522522c6504928cd179c53f41ad6c388. 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/DEAM82300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fde310fa7fbaa0c618af80c60935d0b4be00506fabd7066830231ad03ab3e6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEAM82300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294435fab0bf21e6d427a079cf55f8695650005fa0c31752c8b1007acae0fbd2. 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/DEAM82300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b900513a4f70e35db76df1858c4a809b0b880213445bde74d782fc5ff7e8931. 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/DEAM82300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ca19c658e2f5a6ad532eae61e45b01588cca93c526d8cb4597cae0fb92b217. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USXXS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69611ba5f8b198fca7c13e82fd55c1e0c7be9966e2f3d7e15615844f713ce477. 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/USXXS2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ca19c658e2f5a6ad532eae61e45b01588cca93c526d8cb4597cae0fb92b217. 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/USXXS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87069ad0654a0b6751614bf29f212f0bd464c39d4f324bc867ec90935fb85e76. 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/USXXS2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69611ba5f8b198fca7c13e82fd55c1e0c7be9966e2f3d7e15615844f713ce477. 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/USXXS2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13c44b43a2876e7f73314a4423debaa3e559bf771aa9c763f982f1d22a3d05f. 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/USXXS2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bae7e3608e1d64acd27e172150fae71afa53a93c004fe8e8e0e92a938fad67a. 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/USXXS2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8010a1978f2cb998ed3b7ba8f5f979fcff00ea958c28fc1a0fac1ee045ac1695. 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/USXXS2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083a0c69618ec2b4411d6ebcc98f28fb0d5a591eec111d29d860ac52d2b7219b. 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/USXXS2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0902406074af00c3f1d7c8e12bd5f29926b9a683cca1549ce0d139744e553d9e. 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/USXXS2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e814e82cb8024c6d506979c41f0d066afc749448d2dfa2de0b8234dc38fe7de. 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/DEB332173904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67db1ba3193734edfda409d0199816b069ded090845447922dc536bf4f3d893b. 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/GRHV11900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cd1b9bc32ffe261b7514220e660bfa1eee66db53da0fd020e123b957a11dae. 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/GRHV11900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd786362148413b8211d6bef99970f1cf02c4fdf47af9fa6175d61c97d3734f36. 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/GRHV11900146.