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 0x3568e63003faf65219319ededd6f54014ebb654773581914f56a30a06a1a6157. 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/5e9cd291-9f2f-4247-abc6-37ef6acf27f9.json and https://artists.proofprofile.net/proofs/artist/5e9cd291-9f2f-4247-abc6-37ef6acf27f9.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 0xbebf1db9eacdb526e350539dc89c7e91e403869b9411f96cedf87f443fe12836. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM72107273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918231a9bc824a36960ed82a8e8a99f5d77bbceecf26e38683db02c9cd8185b9. 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/GBUM72107276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc24568f0582dc58647f6efdd12c99b631cd8d58c8051a6f611dd50ad0c655c8. 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/GBUM72107277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ce3041cf094836dfa7a89ea551af547c35cdce5658ce9b643e3cd8c2dc5fb7. 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/GBUM72107281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c56c918df4ce8dece8c42e0de28ab435b57e6ebc3ab8ceb7a45b945f72701c. 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/GBUM72107271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5697d422c9d12721fc96b50b827ad6bb7300adfb77d4ade34471a2dcd8937b. 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/GBUM72107278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9c6aef05ebe8bb972129418820ff9b1ce800f05193413b27f4f0ae9972d13c. 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/GBUM72107270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd873fd719b66d895c822ab21cacca8adabe435bb4cd6d8a706a1b43ff022e20b. 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/GBUM72107284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbb3846eddfabb32903626e0e865e5d70f3f18851ef98a9515cd09fe3e8d830. 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/GBUM72107280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb8e75dd672aca6eaa76494fa10ac5fd7cc8d18d6779d8d662f603d2991a84d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM72107275.
Samba Em Prelúdio (Un Jour Sans Toi) - The Paris Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccbd1ccd41f569ce480c042ab99e6e07585a8b18c15fd568530ca05be646e69. 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/GBUM72300456.
This Foolish Heart Could Love You - The Paris Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcce4384f7b1292b765d408bbc6e5e33d67dba80e9420be68db679a140be364. 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/GBUM72300457.
Perhaps You'll Wonder Why - The Paris Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4df38eddba513da3f936147f403c7fa46a5bb66c23a76e06dc81582904896a4. 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/GBUM72300460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccbd1ccd41f569ce480c042ab99e6e07585a8b18c15fd568530ca05be646e69. 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/GBUM72300456.
Darling Fare Thee Well - The Paris Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe523283233cef30baf634b13ba3c20c72cb351c005f100d71702ef573ad72a33. 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/GBUM72300459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9c6aef05ebe8bb972129418820ff9b1ce800f05193413b27f4f0ae9972d13c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM72107270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc24568f0582dc58647f6efdd12c99b631cd8d58c8051a6f611dd50ad0c655c8. 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/GBUM72107277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebf1db9eacdb526e350539dc89c7e91e403869b9411f96cedf87f443fe12836. 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/GBUM72107273.