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 0xf8125a456a6fc11b9f27dc1b5f2a1e3b7c06e0e7b986d8917f6afb4073bc9aca. 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/e16f781c-e007-485f-b39d-4608f0cc24dd.json and https://artists.proofprofile.net/proofs/artist/e16f781c-e007-485f-b39d-4608f0cc24dd.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 0x74a3d9c03d7bb0fb2f0a634310e780d9a82590f1ac6fa7f20e21617a19ecac10. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:20Z), 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/SE49U2329601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49c09e1c361b2b51627a67db711746b47c905a865c9f9aec76cc7a8e64af69e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE49U2331701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d60784ee110ac71242c2f186c860bdfd0ca6ac0b932805d9111cd72554e7bc. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/SE49U2332001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf32e2207f289723f40c9a9f6cfd9aa8539ada076f2a926277323417a1f82529. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE49U2332701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f5cc64a7968815c2af4481535cf5f6543b93431bc0d7633d376729e4167b65. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE49U2332702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e639d2d864b6ce1cdb118b42b0a494032e3fbceec5a89b5b87b0b4f683943f8. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/SE49U2332704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a4f4e072040b7dcf98375b14ad375658a83bb14f5400c13824635b5ee3a0f8. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/SE49U2332901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbc919608098705d39da8e267fea5547d3b1350401cad10b7f586bf2caa7182. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE49U2332902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9b4f303e81cbe714eca6cd6e82fd43eca0616702ff88de63b68e4d27e48d71. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE49U2332903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d46172effade517179ea41c2a25821340cc96517d82e8ecc864ba8e6e6223d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SE49U2332904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3afa5fec6fd3e35c45d438d44404a8b19de92fe50ff2bfe9398a5bc06b68573. 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/SE49U2334901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cb9c7f3e03dbba2c9cac13e6164d8dc09b6cbe0673f3efde9e47e888dc86bb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE49U2335601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8c3c64eefdd5f59fa136dd8e889c5868eb7fa5f56d47fadae776c57cf5b44c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE49U2336501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8567a9dcff62b09de6bb4ed033d453395e29e55ea652cb6176e4365cb7612a4. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:24:56Z), 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/SE49U2339801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692790ce488fd9b9e95f88b45db2fb17c7b6690d29856f35d1cb050f5ce15118. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/SE49U2442601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cafbb28510d74f8fafb6133b65002a21d0b73b4a7fc1e56404139bcfd68807c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE49U2445304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040ce4613f5663c6c6be5e6df5d75fc36d226e8a7f57a5000d37a80eb049793b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:09:23Z), 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/SE49U2446011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf74ab2a6af2099966dbf28892938b2bf2d725367736f4610eaacf56076dbbeb. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:44:36Z), 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/SE49U2446012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f2b2158d7a4191420ec328c0a7031d6d0e4ae4cf98e193272ffc559b9bc37a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:30:20Z), 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/SE49U2452001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3209cc6ff2980267f8563fe95ad1f850da4929b01fa3ccf25efad661991f005. 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/SE49U2455101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee7644de73d167240e80f1602a7826f5e3cf4260d17028097cb94ddf5512aa7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE49U2455102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84a037109256753f6309f6a264db871d6514b27155934b362fd0790fae62d83. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE49U2455103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5e03977920f9cf7b909de2c01e599fa67ac1b6e7643b3eff8576f0e41fe709. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SE49U2455104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63bdabc19863bc5bd87079bc94bc1a6d76b5b5a42ff25b69163c5e2fe357034. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SE49U2455301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fa1ccbbf0cb84fd4ab8cfef73eb688274339d2d8f64a3db319da17c9529222. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:26:07Z), 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/SE49U2455302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ff4b365785a43e91b5f21318a75503fd51ac10df13064d0033894c74f1a328. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE49U2455304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce74d36f61887f2327c842c09e04b623186d8fe10213ec0e4d6e867d066b8c00. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:21:09Z), 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/SE49U2455701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbcb0851a85c1213aaebcef923241a11c9512fd384fa61b0d5ca575e22426f0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:11Z), 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/SE49U2455702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb734b9b50677827947ea58701d4ff57d47e5c264e842e0d6cc781106748688b. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:31:09Z), 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/SE49U2455703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c5262e4d393fa7937c7b5c20860f9460c25e8a7aee31aa1722fa323557e009. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:54:44Z), 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/SE49U2455704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e097a3fce2a45e7c81c3157bf06fd8399f4dcec5ceec094f6580ca5a1f70f3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE49U2561001.