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 0xd05efb2c25718a9515c5cde872e4f41d5084fd39ad54f7fbc491bf295c75a19e. 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/6debd471-ff4d-4be8-be9e-3d99ee175356.json and https://artists.proofprofile.net/proofs/artist/6debd471-ff4d-4be8-be9e-3d99ee175356.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 0x6cf12a5587ff094d3654bf8475d2b086630d3db1263fd489a9e912c312832928. 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/QZFYZ1908361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c69e893cd653bd236a45ab815d5b1868266ac000a5dfdd998b06470feb6eea. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/BEB472000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce4b33a9172f0e26d21ef010beb425c6de18680d3006399ba534625e6254191. 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/BEB472000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb64dc020b9863d971310e42034245489e84d227a7f29c1c0ddbbe8aded058fb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BEB472000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7fe681ace169c6260d29b77606b3fa9a456f7305518b7c9c3d849a073c5b9d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:36:49Z), 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/BEB472000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f26588dd862ed865123e8fdc3875c657e5e87db97a1860652e986f991f4ffb6. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/BEB472000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91713a0301b7fc8a0e2f8f8be4fead2fbe12cba8609127cee29caa06b2cdc15e. 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/TCAFM2100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f2378e28a75b169c9b921709d7e8021e71f964271fcb8c39a1de3cc699841e. 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/NL3GQ2000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115cc88516edc7a9d8fca930ec73ed4ce506bf747ecc1b169f37cf58328f57bd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAFM2100199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d841e751fc60373a4b534c4d8700e20801ff3ca9d823aabd12c23994a52b15. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/TCAFM2100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f26588dd862ed865123e8fdc3875c657e5e87db97a1860652e986f991f4ffb6. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:20:15Z), 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/BEB472000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffebd1897367c69be9de016a10beebf406ffeb8bd64eca2e62d9682df5d6068. 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/TCAFM2100243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb362f0b153c43c549d7a0b167a9d4ea580d1de24da5242fe590b9e2de5a5ebaf. 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/NLS242100379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18befad8a6f763c283a64c7701234c1b3f357822ecb31d40bfde894b2569b92. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZRP42111016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20cd3ce811aab078e1938b12fce0319456ebaa84c0799191439ef1d0b92e165. 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/NL3GQ2100317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb04b706a02c2d6647f4dd100c2ad44bd651426e498361ffb80588a2d58e1ad6. 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/NL3GQ2100318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf44311999fce80bf334a9cb0abb20f8660fb22ec33c0e5ba5c6ca87e0a386a. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/NL3GQ2100319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9468b995faa1557ada3c19cdda8be8c785a75c962569df15b0626f3ebefc8290. 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/QZNWR2137756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd9aafea8fde6abf5c25713d1efb483d78bc024ec2d4ee1c1eac131f4b69fde. 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/QZFZ22287572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa409ece5ca4fb746709d7d563d7bd402fafacaf555d02322a04d9270d42c8763. 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/QZHN32292060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04386cae12a062e6177100342146a8dd5729248cac1c0a6ef7f72e2e39db3b9f. 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/NL3GQ2100321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb362f0b153c43c549d7a0b167a9d4ea580d1de24da5242fe590b9e2de5a5ebaf. 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/NLS242100379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbb3b68c95c998bb97f096ed245d7289ad572bdff569a740b0c7d509e3db39c. 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/NL3GQ2100322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70b84938be4abe242f57dadcfe15340fb01df667a1784e196f3dfb98feb954a. 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/QZES52211494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb65632f5c7f3aee2b91632dcb03dba54003669cd8d749401140fbf3b322fe8e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NL3GQ2100373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5ff31997d18404caf648aa37580bfc95c07c5385f7b07e60fa25ae78146ce0. 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/NL3GQ2100383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec75c89b4d1f53ba2826ed0e2edcfa380f9a0ec340dc297e9bc891dc25e91f0. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:20Z), 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/NL3GQ2100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0298446043a221f2ded7878180f790e944b09a0a70be84c09e014f7f97e48f87. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NL3GQ2100542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c9c20b4de2e1d8198c93daa89d9885f6c5f477baef2e4e1481e9b0f0e75942. 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/NL3GQ2100573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9d4f8bed8f4d2b41a8905b993b1acb53db94b43f56f5fef1b439ec597f206c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/NL3GQ2100596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb465898cd8c2d5fee3a69f8402d033cca08fae8fabbd330cdc7a1f778812c05d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/NL3GQ2100513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c9c20b4de2e1d8198c93daa89d9885f6c5f477baef2e4e1481e9b0f0e75942. 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/NL3GQ2100573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d36dd1b74396bf08bf0bfc41e112126f3d8a0e8790be84203a7dd29e90e39a. 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/NL7JR2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af2dcfdf3bbdd952a4ade1df3da8d7ca3e8375f6a90618aee5b684c6f8ec4a0. 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/NL3GQ2100272.