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 0xb29be5f1bb3b7c979bf14736718b6f7f16a3faf4eb224c807121de5e24a2fe8b. 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/98159f12-13e8-45f9-a9d4-5ee5ee0af206.json and https://artists.proofprofile.net/proofs/artist/98159f12-13e8-45f9-a9d4-5ee5ee0af206.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 0xb6793d59838bf6f4e51240729e4b3e28bea40b157a261854fe94faa4bbaa3e76. 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/FR6V80418138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a400ab64689e7e94d4f7890615aadd2d9ba66a4fd8cdd6852c0c4f497b8da28. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:42Z), 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/FR6V80914778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4775afaf0627373b1aec76e49787b3205059695f0ebbb6aef4305fb147249. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR6V80914788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07968e31a8ceac1441eb04a34d49394a39f1e4e2139b1e40b55930a2964ca27b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR6V81198131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a804f4e2a5d82fbb8cc9f4587e032c120bea81fde58f7697f974cb8a1393618. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:41:42Z), 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/FR6V81198136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fd9c2fee1f75c72717a875a8e973d83e92daaf27f5acbc9f4555034cd72728. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR6V80688314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfb8e31465d00b48ed762099f946907f9c15f5ac9badd59359d427a7d137725. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR6V80688317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a36f17c4e1d52f5831b1af102b59e145bcaa9af1e3a2431d6cf444c0225a63. 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/FR6V80688321.
Dix ans de Zouk (Les meilleurs artistes antillais)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1e835399ddc05a1b9d2d13c7cd45b25887a1dd92c7df4e60fdb7d7c8253f2b. 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/FR2X41557552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218fc52c2890fb47a5bd3aca9c9c65f99dedfd46dbabff17984883f8e5f1561c. 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/FR6V80631799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3237ea692c146f4bd4564d267ae7542f3dee16c693eb42e814077fed45b5a9. 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/FR6F31642510.
Viens zouker - Nostalgie, vol. 4 (Mixed By DJ Wilson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc6428be4b962c81e2f905b9276fb14cf42296617c7213153695bc844d21299. 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/FR6V81837290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161d8a043f703f8f60e661319ffa8622eca75af9b29829a0bb3da6eab7670aa8. 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/FR96X1711200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161d8a043f703f8f60e661319ffa8622eca75af9b29829a0bb3da6eab7670aa8. 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/FR96X1711200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09f14434285e9b1f81b9d8db7f9dbe233dbd612ecb9e27de2c225453b122206. 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/FR6V80544354.
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 0xd542483e8135f2776624a745ba469345cda48598053787e1d1e1cc4a99709fdd. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FR6V81056346.