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 0xf37adeaa6e13a48c753966d1fa20b537ed26e8315dc8cc1dab20f52beba71e99. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7e85af7-56ef-48a9-9ec2-5acbc3ebd3fe.json and https://artists.proofprofile.net/proofs/artist/a7e85af7-56ef-48a9-9ec2-5acbc3ebd3fe.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 0x349e0e5078432b6c4b282f2e68978339fe35547151c4761adf4683c634ed37eb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMTM62200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0198b9e7b7d5b3c93943cbc2855bda25063c7f493e3cabca7fb9c6cf73d56fdb. 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/QMTM62200427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdb5c590d76846bc2a480773bc2bf05a910e1e0c91b96a44ece35a420219c34. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMTM62200477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdae5b64ddab8789755b0d38f3ff228a223f4214dce16fdfa122f016fa7dc769. 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/QMTM62200473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3f90571fae19932b24460b5ccd6726f5dfd42b33879c2f82400cbeb712f565. 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/QMTM62200475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7911072a675d226c1a62e0023a91bf944fb4d1f202fb677c1cb5c27bf90d945d. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWV32552939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd429b857f198c8e95b63c1fe78d8feb06722f09f3d31ce2b071207b942d855a. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:37:33Z), 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/QZWV32552942.
Don't Go To Strangers - Sugarshack Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00d629fe1a97d419b50c1321c75c193c88d74310f3aecf64a39bd605b79dc2d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:16:58Z), 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/QZWV32552949.