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 0x7e2008c892711ed71c6a59f083b3b91e3e61c8b11a3eafbaf2e0c780f1d007d8. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/037c690e-4d7b-455f-8156-0a75e4a51be9.json and https://artists.proofprofile.net/proofs/artist/037c690e-4d7b-455f-8156-0a75e4a51be9.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 0x2f2f86bb468ae949b2df7651cedfe36f6309224dec12b6996bf95c61cf26d2cd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QM6P42431879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d991d7e53f31772f5da7536aadbda97bbd7a221f45524b96d9c33205fb3ee54. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QMBZ92470123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8fc7454c97ad3628a560d6fd25cdf2161f2bd79b632419ad5fac89044fbf14. 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/QMBZ92455759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3ed9615ae70b90e2c156c7ee3fd9bba2695074580d0bd401fe9e9f9b164484. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM6P42432095.
Ain't No Sunshine - Afro Relaxing Mood - Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb66fe6f77da9e71e24cec7e36732ea47fb9d30a66d78e09ea3872ac023ebb0f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QM6N22419243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011ff8c4054e384280eb29d1864402dab0ec6bc227ca597ffc84bdb8f77646a7. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QM6N22419301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7a940d2bf2e71e0550805fe7c35c9dc6e3bb446de8a7512bb5c9fd1f5dfe8d. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QM6N22419270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92add144ab61ce7f642784127a80af5eeea3dbe3accd8c024992057a0c02a358. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QM4TX2522621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec59629df44d40d30531c2dbf09b03ab40a4bdaa4bdd7cbc104cc09092ef36e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QM6P42585142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd32e4803a01ee31601663af350468ae0bc53729f0ae530851b0fc683209931e. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QM7282502897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9180722f1fcf34ca574533e81cf9116142868758ab5691159d97255a4f5740. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QMBZ92571474.
It Don't Matter (long as I got you) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac519ea2f5ce20db53af69fdab32b92eeb67e6c08353e3e52882ff08153411f8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QMDA62524452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a125641ce8c907fcab047877255698018ae447ee280ae22cc455edc08236a2a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QMDA62519462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec526817617a2ad8587a10faf5f57b3b755f85ce587b91b8998e16fabec54bea. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMDA62519464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6880b57d5270b41ba5a681ff3f81f7322227811a021b682c510ee4c0c0536bab. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QMDA62519463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe81e0bfd91135aa9ff6711bedc5f4d68079197224ac6d967d83ea27b684faf. 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/QMDA62503414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61aeb81b0ddf44a326873510d1ec1d5c7aed01a23be0f5f6b9431abe670ea58. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMDA72535774.