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 0x877c884076e9961cce6b21384d331cef4422c991fbd90efc6aebbe965a234259. 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/4e343876-5c69-4f7a-8d4f-b4e0ca9ebbae.json and https://artists.proofprofile.net/proofs/artist/4e343876-5c69-4f7a-8d4f-b4e0ca9ebbae.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 0x73bf38346bd3608d5c0a65819941ddb778248131190bc11c8204f1fc8ef5f71e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ESA012160792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885ca0d85d1b340c95dec6e9b0102ddfa39e63b630b0a32f789bc962035ceffc. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ESA012176762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1068e0b84ca5da9ed11660d5ce5fc4a06d1eca731544d927fad0df957ec428d0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ESA011862740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034684db1b2f50e079ddd8f932830aa10d5ed237d2c10d38c348a2755cac49f2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA011680461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe074be11cb6e34eeebd57e46e012252a83a82c971e2eb7512bb8de6e30af8bc. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/ESA012222764.
Una nueva historia b89 (En Concierto Vol.1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf93e96d4051be9fe14440972340bc9513cef0564fcb98eeaf535716d60bdafa. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:42:57Z), 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/QZNW72336036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52da7e9536bcdd365733452fe6c4e5e2c4540c574d67ffa5f22cfd03d137f0c6. 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/QZNW72336037.
Banda 89 En Concierto - Una Nueva Historia Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506f236a766eff49d8c5ba1577dea6120149aec14bb44a98e2679cb3b17409b9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ESA012336100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f5866e7665663adfcdb9c136309695fb900edc5a5b1d45c5b3e6c43a7b08af. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/MXA3S2500652.