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 0xa953d247555741f8c61f537d3e87182df8ee2bc3df7307b9e397969087cd8661. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6ac7cc3-8546-488c-af0a-fa13b6a0b8f5.json and https://artists.proofprofile.net/proofs/artist/e6ac7cc3-8546-488c-af0a-fa13b6a0b8f5.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 0x31318f083a3cf3301d2adcb1e83ec54ef95321ba02c079c1d19371455bdff7dd. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/GBNEQ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80728f72649785671dbe16a209015dd0e0eb15e31293862e7428732c6e34a422. 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/GBHLW2300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74979f7b4d794b36536a54de652e3292463373d64b427d1bf9dbb92a34734a67. 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/GBHLW2301215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b25135b1c4c35b65088b06654d6032250923c87c7c83cd7e7808be4435b8be. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBHLW2302069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27490d1cdda2d13ee33629453fd6596e38849ba4ba6ac2d451f0d1396ffeb94e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBHLW2400812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc177f7471bfc37ce5acf06498c805de111e70f6660b9fc9b2dd0516e0da439ba. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:04:14Z), 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/TCAIX2494148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f619744e86907273806a27b316999c4f2c09de9b21b1f435386a36467ff613. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:06:49Z), 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/TCAJC2463716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44dd0ce488a2b6f293abbdc15ece5c303f0eab7df7737c02048669465dd610c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJT2581299.
Café del Mar Ibiza Chillout Mix IV (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80728f72649785671dbe16a209015dd0e0eb15e31293862e7428732c6e34a422. 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/GBHLW2300296.