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 0x9224e2fd6af38bb8e248545566e384a2a46d62166a196cbfac4e7a5609548d10. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a57342e8-bfdb-44db-82ac-efd81f12d782.json and https://artists.proofprofile.net/proofs/artist/a57342e8-bfdb-44db-82ac-efd81f12d782.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 0xa221420b4aeb1355e1fee9ee0df2c74ae6e135ed845dff61e31b68c708542739. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US7VG1883028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312575c92454bdbc6312b52f7c227745c3e6bd8062227cce4fe9d7dd2a751c30. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BXKZM1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbffd9218384fedfa78747dd0aeacf39e3dfe0842c268986f33ddca15af9d761. 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/BCRO52000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35326ee4af5d846e7e19503f89de763778cef6c34851e7b2442e079b8d915a06. 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/BCRO52000259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d560f5c016921d03596d734ed0b62768635880ecef313315bbd856c15e5a81. 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/BXKZM2000663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311583d809eb087952e3779fd414065ad6280fa3794e5fa473390bbe1c3e12c4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BCEBD2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f22e8df562a62a848d81c2a58a8974007e112a8c5a6243dcd01fdc3edf26335. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FR96X2205329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4596cdb6bc89043f5a25cc3114770fdc1c0ac2d611d9d1acc674b0c6989f7b. 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/BXKG22200342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecf73d4c1ac0e3118cc6f54d94720b2c4a5eed7b33912c9b99ed65e86e7aef9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:24Z), 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/QZNJY2245935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd2f7716910dd724d1e3e6bb4a9fc1340e0efcf0eb2c4b7350f63f4bcc858dd. 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/QZW9N2241677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0937994619071c629cae8989685a85924224f2700903337f7fadf67272a6fe22. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BXP0K2200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc88ed832ffad266ea49e536c8c1b7e0e7a364c25385785cf9092b20c35af171. 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/BRKO12300524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b063d746c31e0668eadbebca063de69bdba047cb1587dd5ca9768d27f1cfd9. 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/BXP0K2300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8ee69ef92323317a0c770204ec8b4cab751dc0ca57820e2da1bc9def9f38bb. 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/BXP0K2401706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185ce86beb5357d43f963fcb5474c43057142261b4370fec3725d75c3880608c. 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/BXP0K2401617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc059a29a12c98d16886353f3befb73e6a98597eef04ffd1eb2732e209fbbbc29. 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/BXP0K2401615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278e12a10bf941003239c895161f919b8dda78bb3e309173c4a21f4da50e315c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:47:59Z), 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/BXP0K2500372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a186e770b8457d7861f0d9a49c6d2eaa1e940b8d0002ea6e07fe0bec4241513. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/BXP0K2500371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278e12a10bf941003239c895161f919b8dda78bb3e309173c4a21f4da50e315c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BXP0K2500372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939eabe268b015f519a633cbbd5afd3079505c78e116002f2774a2bef57659f0. 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/BXP0K2500373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb26d4b33884d8810ef4e19cd180c4c757af86c2ba99734d729fd6048dc5c83. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BXP0K2500374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bce1b973f5b658a84aca2edd8801d00b3c284ba0c8cdeb3768d7077c716b27. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BXP0K2500375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a963097e3e7b2554f33c5e94fd1f4abaaa892fdebe86e47701242e6d3f8e10. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:54:44Z), 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/BXP0K2500378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b332ec2713b26538beb88e0c9d13f9359365b4c5b17cc4a26ef9e55c49d89c6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BXP0K2500379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c77154d839f55603ec9a5f7270b5f984bc267bc54dd21aec66c8f259cad08. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXP0K2500382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea4603ebaa84d35c9b6c3d5ea1a516a4fc7cb185fac9b5d617e67ef03a5a92e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BXP0K2500384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732fb49aa83485f17f9639c138588a7f2ba7b0254de26cfd5a565ae33b3b9d12. 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/BXP0K2500385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f67748a9baf44503dbfd8100cb71f775fd3258fbfc792e7c09dbdbfe6a17e0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:05:11Z), 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/BXP0K2501069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6bc68c2fa5010ff6a48c80c34aab6b2594ee072823ec2373ebb34d9ce8ada4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:53Z), 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/BXP0K2500936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3e56b5b7d97860ec01e797e6a1106e805111bdba737c4378f034954cc7ba7b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/BXP0K2500792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c29147004f88422774ccb4e28fe1089a536ba8843a844786c39d157d9e12ed. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BXP0K2500937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e7649bd0f842fe062a2f7c5091947b07e8f068a302b1f38acdec81a50b2189. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BXP0K2500938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa121563821818296c08d9ffce21d97dcaef150f41dd2b54ace2e2e8cc0e1e936. 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/BXKG22101541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b32ba70e8483ffd67e4d5fe01b9897e24822747b5975ac58eb33d29ebf0bd53. 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/BXP0K2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb719afa282f7dc83c1476306b7362ca4bcd998c390e3e0499bd95c9c03721ce9. 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/QZNJV2504610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25e3d39966e326b47e0076c817b3aff6080f0063a56e4971b7df40104172a79. 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/BKDFK2500020.