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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf059d4eb9bfcf045994491d75ca52d96e074d1d56d10523be58bde6df1bc842. 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/a0aa1474-20e9-44ef-ab5b-43ad5c665d86.json and https://artists.proofprofile.net/proofs/artist/a0aa1474-20e9-44ef-ab5b-43ad5c665d86.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7e41d3dd2be0799a137710a88043434cc48b1d705b02b543b3cd129fac97eb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEQ121321290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fd3175a40d27ae41f831b20f09b9dea3f1ecfa08c98e48c09b4cb88448ac9d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:50:44Z), 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/DEQ121641163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbebc306a3062bf8c25fa3152cb60992669626196aac759bcb042d886b15e3ab. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEQ121641167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf954d718ae8c7d5728adcb8756a27fa4a5d20be266c5bf37ed7d00f69af7b4f7. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DEQ121751212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d73c9b6bd70ad33176266b500a500c60611f4d7498b58efe278b32b89425a3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEQ021806653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7191ca1fc2a09eba94c1eea5cd8e7d69fd8dcc4286a00a9d5c5c3967244c207. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEQ021907181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0713ffef5236de484880652aefc115419f0c227c0f21135ff3da909dc42e8c2e. 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/DEQ021907183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd561652b824e59589d4773962b605413a99fda7dd94afdc164103608b6540fb1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEQ021907185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7a9904d80c7268400281aed95b0fe1138b1a0d5a06764768526131574bba53. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:06:22Z), 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/DEQ021907188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59994bc0fdacc31c94178aa0ba748de6b3d7b21f90c938aa65781bfdc5fd5141. 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/DEQ022290743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746a88f57d4f6ec206de6b9385282e500addeb1ad6aa2fa4e8fcefcb160acede. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/DEQ022290744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e71cef2b7ed52091e826a3bc62fbed8854a293bd3dc9bb9ce6ef174bf0c80b9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEQ022290747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6488dff5ec91a4d06e61157b3a97e03e52968a105507bfad64291e1e6ff276b7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:43Z), 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/DEQ022290749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c5073e917b4f31ef2828de0acf5cbfdbec2a96eca3631bdcc456bbc8304220. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:53:24Z), 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/DEQ022290751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64bd4730dafcf653eddc1bf7550d4f9fe4ee339f3834d4d11a8e0e702af2c6a. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/US39N2309017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21b622a43f475769fd966012379828af3ba386e7d538e9b5c438d2fe9f6f580. 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/FRX282487000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8dfbfe9f7835be8960de1cac2b9853a0abb4bfb3e778ddb716eebb66487903. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/US38Y2412437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a637ed137a358b24b90b43af7d4b28b764bdb05830ebba581356eba7d02f030. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM42K2593355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084f1c833b066f99275ceeee4418df5665b6792b2c1030d39879bc5c89e4456b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMHM2542959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0224bc1b01e61c04eb2ed646e22e8611d42570e232247edc39798829359cd5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZS632557298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e85867b17c783a5c22099b32d0567483575b4dad5f03113231d15bb6714234. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB5KW2102876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf282a5c46c64e92daee05ff9df76db63e8e6003753ed3b3cfe496341c4d2face. 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/DEQ021912054.
Our Demons (Remix) X Drive It Like You Stole It X Analog (revision)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5635fb70b4469c292bdc2ffd2874ad3d60db84398e0a339ccfd9de8a40aa98d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME2160506.