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 0xc03aea85d69b40a1b494d9c8017603426aa53022014fe2b4bcc7fbe5c9861659. 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/3537dfa8-ce8b-437e-9474-8c8e40fb05e9.json and https://artists.proofprofile.net/proofs/artist/3537dfa8-ce8b-437e-9474-8c8e40fb05e9.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 0x7fe42de468f6ad1b493a03472e0038e017284279090551ce9a65857689c50c9e. 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/UYB282268002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744d4b631c604ac4c9b2fc0aef95f7bda57d2453c341f121e7f7560ceb5344a2. 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/ARUM72200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bb881ba6eae1ca7271a1f088f57180b4c6efe7245be0a81cc43e7af6aa7698. 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/UYB282268003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d8afce32706fcf0604cab5be44a27fc6e56fd21944cc9f65ea23b4aaaf6771. 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/UYB282268001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b7aa731fd699611aecacf448f3c6e9c42e2c060553a38223d694cdd201b49c. 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/BK4DA2426239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3942d487563d48b3b402aa8b3c76d98897fef7c583c4102724d0db478538c374. 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/QM6N22415482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64075faafde417274b255da7ee1071c757c80293043d4edabdaea9dd991dea6d. 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/AR5UH2302225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ecf7601de65b401902b557c52e4d84c4aaefefb86ae84f419e35f9c00b6c18. 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/UYB282410102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3f119e447f2972a4e33cd2cc0330c4f736f2390aa085dc791274c56692553d. 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/UYB282365003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6074ae2c70cecb7067f82d2f003c8c3c1d3d70bfa00a6fd038581a5c4139f929. 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/UYB282368015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ce8707bd9dec9df5e5b5a66de95ce6be3a6d8710758eed4126eeb86ee49104. 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/UYB282368014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bb881ba6eae1ca7271a1f088f57180b4c6efe7245be0a81cc43e7af6aa7698. 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/UYB282268003.
DJ ALEX, EL OSITO WITO - LA PRESIÓN | E4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba64d9c51a87f1d51efc9cbe06937babbb97f359de8aa2847d3b80918e754db8. 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/QZHZ62121955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbc3418ad23ef92bcdee97e40b87946be39b2700c46674d0be0285d4aec75db. 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/ESUM72402024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39346a1a3c280746cedef347202bdc6f980b8ad9ab1bbe921ea145d8ad698f7c. 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/UYB282452310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6294d677f08afcc238bce4f60d747d002593b98936dbb3cc90c6e16f27dacde7. 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/MXA3T2492559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a8c839fbdd21067f3ecb22d748fa83ab0b2a183c25b7b865d718cd1af16965. 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/AR5UH2300036.