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 0x4d4b1a7c9ea6024a45772afe23965ee76f984a6835521b9c81fbb2c6ce6ae9a8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f319a83e-c7c1-4e0b-89f6-6dd83cd063fe.json and https://artists.proofprofile.net/proofs/artist/f319a83e-c7c1-4e0b-89f6-6dd83cd063fe.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 0xb858bf071b3d204b80c85ec963e3ac1f5a37102948eefa5c784140a1351e7f44. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZ5AB2152737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c27b2778a5d2ec0aaa6c8e9c957f723b0c6dce28f67de4f93fe68fb838ce76f. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZ5AB2152738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413f6cd0104feb4f4ce1e411c73e53765508973eb726ba815705fba833209d02. 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/QZ5AB2152740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31616eafd2f6ac67ede0cfe5af3b638c005f8177b60e2494b4b3b265ed556307. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ5AB2152742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd99936172244b556c2b9ccbbd56b406556bade21cb064611ccf78fc770ecfd8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZ5AB2152745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb13681af96ad2358298a50f6060ca00d58ee5acfe635f9f13033897f8679c54. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZ5AB2152746.
La Princesa Del Valle Sagrado De Los Incas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b5b907d944a436a05243a2f86222f14c4a28058aa24598cafd2645f22aeb79. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZPLS2376857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ab1062e1e44c3fe65e2c1918171e5ffd5c9994f4f335bf0696d80fa5462588. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZPLS2376865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b189854ce5f8462edf715c1bb972d2ff634b444b0d40ea7ee8a7d1f000f5cc2. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZTPX2393701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7402c65d740d02d5a5c005cc35765b27fb28ca4a3a98fffc33090a053130a94f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZRP42313536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d8342c6b1d278db3e10e03b6ca245f04545500b51ef1ec55089233c9884d51. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:25:43Z), 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/QZRP42313537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9776268a5ca28e605c9435c745a4e2b5f8b6a498310ae020074163b6f2f46d2c. 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/QZRP42313538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e8a7d16882dcc26636c510a0b9d8ec394b214e48ffbb08a23f921fcfe2a144. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZRP42313539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad12b36c97b491ac2f66a3b917d0399c6f925e04423172358f33f2b7fe96dff6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:34:52Z), 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/QZRP42313545.
Ojos Hechiceros / Llaulillay / Sacsayhuamanpi (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544efd54b2cf4d1063072ab88b40a39a4531af31736e8576ee2a3d52ee4b645a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAHK2398499.
Por Las Puras / Mal Paso / Cuerpo Soltero / Señor Cantinero (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172cd0506a6904c5e4851f65ac9ca22cac497c89d3304a42334e9da82c16f1c9. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:49:48Z), 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/TCAHK2398511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4871923252c0368f236757704c79227ba7d0fa9226f461c488366ed7a146515. 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/QZGLS2161741.