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 0x9e4d011acfdd25c7f00928a9b60afb7ca5f59a46ec41bce6c83e851c50fde562. 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/bec37235-df74-4882-a09b-44a409a75c1b.json and https://artists.proofprofile.net/proofs/artist/bec37235-df74-4882-a09b-44a409a75c1b.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 0x5b8dee051942986db4053f7cfed988a4a2b9068f9307ab6deda9e12e720f0eba. 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/QZES62196002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e2c173c7c113f19b678a32e22f0a0421cfd619cb1a503ee66a8f7a791a0d08. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBLFP2206628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2ae4d089732bc4c41991148516681543dfb1b5726859c896ddb921c0ec42a5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:46:53Z), 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/UKXN22227033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11d2ed876d3d1153765c61e9834a06efabb7b4195cc5204dd74d63587f1ca76. 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/USZXT2350966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4f4b1ef144b61eae09ac514b90eb1b9475bf0af68e746b32a3be87fecf12f0. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USZXT2350851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728f272d13aa4d260aa52168a441e74d313653b426336bbb72c06c8edec5ac38. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/USZXT2350967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f25e55801fb2e2946b21dc2933d77fd79f10093fa944fa6a599ac7d8c5f8425. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USZXT2350969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ed63720a00c91ec0dc880830fb8bbd491aa9b33dfc373bee239ac8bbd5ec1. 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/USZXT2350970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dac4454a7ddcbb4404bc31e55f12c40e8e307736ae2905582428db1b2463f57. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:24:00Z), 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/USZXT2350971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100938c118c02a0e098e02e7b357150f056b62658d8b5b443349e6beec4fe566. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:49:31Z), 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/US23A1569607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a70f78471eefc49ba55927414aa0f40d162343fa2f4ea414fafc28e1d631200. 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/US23A1573352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b1596ec59f51551df57b944e76384c165d17e67b653ce424ea689e804904ce. 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/US23A1579419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa150958d8103f2dbb2620bdfd375e02b3f1551cde8bf7a0f1629bfebb985896c. 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/US23A1583691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ab84d8b88e41996050e9e44164f1114c7543be26f0485c058959e19740616e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:52Z), 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/UKXN22562419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ca49d3c4d450992fffb24dc3eef5c5e4b622bf914b1b821ddd5ee2e3383907. 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/GXF9Q2597927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa3d6e12f694298830ca9eac010fb5bb69e6768b308baab208d7790711a64a6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA072471087.