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 0x98f808333aef5dfe25dbb15a39979e9aa57868cb53c0c40597b86ff9dbc95cee. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f11f94db-1bdd-4469-8ba1-b6df40ec4735.json and https://artists.proofprofile.net/proofs/artist/f11f94db-1bdd-4469-8ba1-b6df40ec4735.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 0xc180f29ac313dee028420f94728884fd165c8b89ee38930fe7709ac4afc26caa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USZCN2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae61fbaaf61915343ed73c9307a1e89327a54c47745bd5621e219e9f488745ce. 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/USZCN2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6e99f1a12896f6ded217c2a38f75985d102795a217276202a46b21d550b70c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USZCN2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5937a5627acd1766f29550b9ab02e67c623aab0892ef92a482f0bdc691292b41. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USZCN2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c815e42c2ff66b6d02e04b8c2f1ed362ff65e8e8f00a6fdcdd582f4def3682a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USZCN2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f04fef2ee7f2d4df8e811b567830ea3eb134006391de7c3ea02228eed5d3ca. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:01:47Z), 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/USZCN2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc393599a1d1cad8bf642afd86dbea18a2fd8abb88c0a7c6c70588159ae4bacd8. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USZCN2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e222cfe48b775686ba314694afd8ea185be0ac7a6daca3fa153083596cbd59. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USZCN2100031.
Christmas Day Without You (feat. Autumn Ragland)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbdb0d850ae0b4f6650cb04eb0b41fe2e505db10072f379bf69491a8b5618db. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:02:55Z), 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/QZMEM2498616.