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 0x25552c665d2ad419c1290e8164273e586d16a689cebbebdf17dbec35e1585db2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4af734e-b4c7-438e-86e6-3cab52a73e2d.json and https://artists.proofprofile.net/proofs/artist/f4af734e-b4c7-438e-86e6-3cab52a73e2d.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 0x6f722df9ef5cadc8262b56bd198555cfacac3b705fc5070c1c17b8cdcd894b54. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMEV2413164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa778882fdef45ae936da3100de15f377039db4dadb3cb4b92b3ee7b490cee145. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUGBT2406651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63851804c061e8e3f3c7cd025c664548ee0a0743c66880ea6ac67245b2ead26. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUGBT2430315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781ec1fbb38088bfcb01ee4c25bf8681f23ced826dda0ea4603346c0b6b30b77. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKACT2400959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579f2991c4cce026d86f12702e78f8718c1d825f4d2504241b0c0cf575e7f05a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKACT2400960.
Taboo Meditation Flutes - Field Recording mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f08874aca2b2882ef934591e5de7706cdbf14350414e22cc662083b45c3433. 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/UKACT2400961.
Whispers in the Wind - Field Recording mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d71069dfe9b31e8c1a7cec6c45290da0d290ff2259282902bbcc73f50ef9e4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKACT2400962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9848d6c3604a1a19498d22b20e7c6c020fae771df0f5b8090d07ee76a520e31. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US83Z2412912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3df42cd8861ec00188f0a18d3a1afdcd13d75d492b4d8e331031bbc16fe5cfb. 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/AUGBT2485055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffd05aa9ff2c8251ccd0bcc5e9817dfef629b05445b01176088753afe08d9d9. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:09Z), 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/AUGBT2485073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbc4692c088e70b14203e8e8fe6a8ebb73097cd97efab03f27af1fb9c189401. 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/US83Z2423531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b59a4cd634ba416047ad90723953a1943e660153a09e6b8d5b85115c45aad71. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:21:17Z), 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/US83Z2427744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651a639e5fdc956c4fef6cbebfa67260fcde36f35b65b27e4b258672ab030383. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/US83Z2427745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643a5d2e492bad7eb00d0b46d77234c1146b0a63fbcbdc4c25810217f217e8bc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKACT2401115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b525e8aad7d0d135cbd84c916898aad6650b88fae9bde11769e321dbe6e15a. 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/UKACT2401116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a13ae796a244d624cd146114795269c8b04fe354632ed5cf4067028c64dd58d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKACT2401118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca816d961cad96db4abddacdda3b1ba6ba86e3bad428983975f2c9b0d14acbc7. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/UKACT2401117.
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 0x69beecbedabd4fb21c49e359ec3a7f45b5ccc0f6da23596a3da02d948d65c89e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:59:38Z), 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/UKZGC2500597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a19916c06d10dcf48a240a629961dac9b74d9d88fc890179f0e9ee9bce56589. 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/UKZGC2500598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b97032565b34e2e3720e9fd5fd2a1698d7f53a419cb86318d157b2fdad4b907. 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/UKZGC2504656.