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 0xdf73b4cd9332e57fa7f8c38d30a57fa9560dd0d27f490644ad10c2313b63ff60. 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/c0409970-1eb1-46da-ad21-112cfd06534a.json and https://artists.proofprofile.net/proofs/artist/c0409970-1eb1-46da-ad21-112cfd06534a.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 0xd327069326775609b24df4ae14dd93b8113623b3d8dc3771489fdb2bee8c643f. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:42Z), 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/FRZPA1419670.
Les Années R5 (Original Motion Picture Soundtrack)
Just a Lil' Beat, Vol. 1 (OOgo & Chomsk')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf495c0623402994195b35fe790b06b836657631e5a2aa5756a54929d4ee24e. 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/FR0Z41200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340cd60569351087f247476d98024e39d579bf036e68b080a31ca84457a303ab. 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/FR0Z41200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3a035d6f005d5230abb83b5f6d5e673307d30e04bda60e0d5ac6fd6d077c23. 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/FR0Z41200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202e13ff7462b4227ab4f4916ec44bae36ffd18fb562362928cf9623ccf8694c. 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/FR0Z41200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceca224ee91acf5818fa53170766c57df6a5688954c16723a7c18f8b802941fc. 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/FR0Z41200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd250c7618a1480be0afa9aaae9b870d829afe3549737cb517e47c435f49e42f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR0Z41200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ed619e116ee81405296133ef71ee8227602059045905e27c38d69b9afd13bb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR0Z41200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a54adbb29dea5bce827350e394b187d12352246419557695074ee84463e09a8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR0Z41200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d944b97184db03f87f032a62853a8c3c9f4e744aee1dc781746fc5c57e1d40. 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/FR6V81263482.
La Boulangerie 2 (La Fine Equipe & Friends)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071ec88f0dec534ed79a1ed589f688d0f6a6faaa8b9e84076bf2ff0a9f352ae7. 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/FR1A91100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af75439b49609fd600ace12cda1feafc30ae0f67f6669b7aca67ab03bbc3de8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR1A91100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306d79fc1b6261989e898d6ca8a6af22029442158fb8fa3e87137fc7df10508e. 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/FR1A91100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5770b4f19bcb06c2f25502da979c4f3147e0a6c37d0dec36c51019dbcf463777. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR1A91100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94e58e5700d860fc5a9e4afe37fe85640ddfebd92db656ec55293a5ddce3831. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR0Z41200100.
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 0x305961c76798fab1e8ec30fb6c2cb94eed93815756f9ed4a6004ed056e3bc48e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR0Z41200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fd363949e77f0d7a7f07663e920473695015f6c7290dc5545fd96190814fbd. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/FR0Z41200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeead033a6766a89158e68f44b923a221aaca2202f5667bde8b71a9d7c0ebfda6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR0Z41200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecb71810acea61d043a4747ca2dafe9c8994f86b2c455f19bdfd74a149e12f3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR0Z41200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75159c025be316772c6e38b4e251db4e5823ab7ecfa689fd875edf9db0f58fa. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FR0Z41200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3568078d29fc6e96787da0b517e0041fa949f5d78ef46ce2677c2e9e7c18a55f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR0Z41200114.