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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c58eed616c7afbee24dc0c7d6ca7c1f686f7f1331db3614429828870b6e89d. 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/b9589324-4b95-4990-8d05-76c4795b3433.json and https://artists.proofprofile.net/proofs/artist/b9589324-4b95-4990-8d05-76c4795b3433.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6af57cdc5f6b95e35014e4e083aeb020faa3bf53b01b5b7ca4efb831260d101. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FR0O70820534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2991bd3d73c5213e8c145ecafd4d1a8d2a66f0b5267eded740a37238e3a06f75. 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/FR0O70820548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5802bd2bc7dd714ed7ec6c2ad953d0106344f8a09c55b0206acf86b7b72d027. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR0O70820570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9b9e940acc4d6857b3aec5f7ee9b44100ad1786c1e7e10ae7357be0a846c2f. 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/DEXO52453068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb2f5c38bb345eb5ab6c641931f5bfd34b59a2fc5e04cbcdeb11245c87241db. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/DEZZ52170524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee13f0f6ca7fac708d7d364f7f948d47495c4942415965b4de6939d7d1e2150. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSM14200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784a3e150c25bd9a542fa129928a8204d1251b3c8398da4043efedbef42058d6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USSM14500147.
Kay Kyser and His Orchestra Selected Favorites
Kay Kyser & His Orchestra's Music, Maestro, Please!
Jingle Jangle Jingle - Big Band Favourites
Kay Kyser and His Kollege of Musical Knowledge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7123880d64eca8d4e343c4dfb25c4cc3fb7fa4c7c1a20c2e7e89a4e0b6287c2. 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/GB8XC1423126.
Jingle, Jangle, Jingle - Harry Babbitt Vocals
Fallout New Vegas - The Unofficial Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eed184097f2de5d75d5ec2a41f464622132d08118add79e99f2380ed77194d. 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/GB8XC1037980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ffc52c47d117e04707f0a39aa8ab128f0d97e3d494a870c63c8331625b8ae7. 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/GB8XC1411111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa534a44e01799ccfb093b0ba40026b835731104a1e015b3f4960c695759a9cbc. 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/GB8XC1411120.
(There'll Be Bluebirds Over) The White Cliffs Of Dover
16 Most Requested Songs Of The 1940s, Volume One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8008296f45f474e3dce0f5ac5c51b2252a938b8b44ea05103dd6c88a6478d908. 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/USSM10028158.
16 Most Requested Songs Of The 1940'S, Volume II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7d8a255c740c7abbd03ce10ee213c1fd21b931cdd8d0752096abc6b2ed772f. 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/ZAC482002539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800fe99180aa0f0fd9b7bcfb0eaa5b546cff45537df2e41289a396376271eaca. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USSM13900075.