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 0xcd0ef3bee584f405b6d5a604c41dda7976f51cb561feba06afb2607b91569a94. 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/4a12599c-2809-46ad-ad7f-cae49d26e91d.json and https://artists.proofprofile.net/proofs/artist/4a12599c-2809-46ad-ad7f-cae49d26e91d.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 0x89ee9c78cc7f82285ef19c60695aec6c9a86935ec91934f4832f0f6f736da34a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/ARF100200611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e90b6bcdda51734c925cdb90e91eb60a948a966ad9bcbb495bd263b4fed0c7b. 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/ARF109903180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b643b2f61f0f5a96ab99e0994265aba4b0bb17ba19ebda85fb7ee7abeb2341b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARF109903167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc6888dffc4be77347e5b0dd9caa96935eb57c98af0eb893d66682d76d68899. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARF109903172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ff55f00144c3dcf84d8af4f02d4df8a0c3a6966d2fa9a16bbb771be8f5a2f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ARF109903166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7d9ee51996bd62f71fc39282423f164fcef56eca364db10161cab6fb84205b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARF109903328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6faa5673fa44a70c1937380354b9d846af9b9066b84c9b2db361d01cb7d459e0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ARA901700157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb09106bbc9abca3e1fa8e0de0a68a50ada955536aeb8d241c65837db2cc2b5f. 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/ARA901700158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6560f95c26bce7f0a043a569fad3555b7dc6fc15e2a23ed4417127b6379a622. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARA901700160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9e109b13f978c65911c9fa6efb85ad94ca0d8a445d23f8e2ce3b00811771f1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ARA901700163.
Folclore - La Colección - Daniel Altamirano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4194e2a8bd1eae39b7914650c39cd323d3ad76462d1ead501199a3ee82a59d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:15Z), 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/QMDA61506017.
Villa María en Septiembre (poema de Eduardo Belloccio)
Mi Pueblo del Vino (En Vivo en Cine Teatro Real, La Consulta, Mendoza, 09/11/2024)