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 0xd861854891c54f70de5b3730eee84fbd5cb9fd9f5beed08180468528ee7a7a44. 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/84f0e6b5-024c-485f-bf11-bac6fbfe7ee0.json and https://artists.proofprofile.net/proofs/artist/84f0e6b5-024c-485f-bf11-bac6fbfe7ee0.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 0x5d1b0be1bbf6db2b688887d2404d49c59fd239fbf3a64f1a8ea7ee2b26d78bcc. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:46Z), 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/QM99V2206901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3d657edee15035ee0e57b8cf441ed80729d1369fe21cc39ba62a080266f368. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM99V2206903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f7ee3a8d5170b228abb3dd53e01ab50fc072aa2313a323c50fb6acacd291bb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:43Z), 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/QM99V2206905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469e7dea1f1dd6c440484abdd4d1f9bf20084bec499ce8c56e0313918a51e71b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:07:38Z), 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/QZMEN2109023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db2b6a43eb4e1417a48faba683f3c7461d6bf1ee755c673689fd47890d689eb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWW2145209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883044f77f17a088adeeb72c73956a123d8dfd92d5e593d592a0f4a41fe03543. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:34:49Z), 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/SE5BU2298725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21efdf3ad7e0cb7b4538e40274c6bc8f8decb2319882bd7609b977e243385679. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:03Z), 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/SE6SA2231811.
You Spent All Your Love (Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cb65e6a36892286b72c3e97e215f77f4c87f6cec10ecb495c9452b233ec981. 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/QZWDD2336224.