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 0xf601e40db0dad1f96b2cab211335cd98037677dbd1ebbc136c5bc5d1082289cf. 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/7c0ecde7-d34d-4fb8-bc07-3139accb717b.json and https://artists.proofprofile.net/proofs/artist/7c0ecde7-d34d-4fb8-bc07-3139accb717b.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 0x3705eed2175db38502f417f127a861e535199f5a2083bbb13a2faca1a8fdc431. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USHM91070155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e05ba857477a97825cf509b6be832edd6c6a74b14f17977482bfb8939331cd. 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/USHM91070156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d5cde639806e641638b754cb7233929e6fee076c674b519fbd95a891178cc9. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/USHM91070157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c2d47648cd3e952832aa52529ac6c8f833b6e90a0038245c529ae935cee31. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USHM91070158.
The GiggleBellies Musical Adventures, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32740124623fe4139c0744ce80c511571c659bbea6efafd32fc20965b0368847. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USHM91161677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ade3112027cbb3601fdb993f745d44d2abbb97c35384ed90cafe9f354e88103. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM91161678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73896d1c6950a43b28cfff56cb8af0536f2204679e0088694f133bd160f80604. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USHM91161679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276402a62149d5da7f87ecb7fd4da610b04482e59254083bb43626cb27a1a9e6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM91161680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66efe1d30ca54b752999b6c9ee9d57227856253fd5955a2519d33a1f2f5105de. 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/USHM91161681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9629651045fd2687133b61499831102acaff2e2e76a1e28900c314be383c7281. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USHM91161682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9147ab9460e59906fb99834c0bca1d378d3cef95d34ded6dfeadf43301dbc9a. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USHM91161683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb102e065a0ddfae957cd809b587709503ed7d4abba6d70a8b3016b545f1d610b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM91161685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd6da3a22be509238bd2c2129ec98518cec041132fff52111aaf6010e62598e. 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/USHM91161686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3b3643a9ea8b1772eac566227537bdd694f50f92c39224653ef013b6dc3d7d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USHM91161687.
The GiggleBellies Musical Adventures, Vol. #2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb138516c7e0c0c87b6ba3552f48d8c353b41ec29066872db99bc411466bed747. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USDY41700831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5144a4b08163f87406e2419243d7bb50754f58a2cfd8dcaeb79b92deb896e930. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ1718788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bcc739e4c4f519eca0f841124ab8d3fd7f261fd006820069a1eb3c6c552e61. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM21792810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a90e7690ca477e189ab4ba7290768aaba46759b5120a1c04e839d16ac5fec52. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:36:18Z), 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/USCGJ1961875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c7862178e1f5502a0223b6ab6f1a0a8d1d3afc354046c0e010668053440d5e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USHM91978532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5b8e752cbd8eebfe715932e64869ed5831a2e0b948d4f3e0ca4b6690d1e6e6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USL4Q1979857.
Twinkle Twinkle Little Star (Panda Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1f7fc5524346edf4ee5ea96f508036e0ae93cfde5c1960e9b41ea1d97f64d8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/GX89G2289350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575572d91a9a00316ae7b8a3a864458137f44fe090b6da0ee3996561b908670d. 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/GX5MY2361555.