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 0x8161afddb78ea05b5ff5fd08dcf31d35dea679362c37e8ec429a6fa81702e079. 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/fc31ab26-69a6-4751-8e67-3b9cea90ba63.json and https://artists.proofprofile.net/proofs/artist/fc31ab26-69a6-4751-8e67-3b9cea90ba63.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 0xbee5b8d47a343cfb1f91e0340b4b9c52b43c60d0cd9e07b4b23927d35f8bfc74. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBDMT1700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0c19b69facf31631a9c66e5918bd2deedf153057ed2bd554b641e89b4ed2b9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZPJ32284897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745ba66baf0bb02e383b0f58c2ee9dd898bdaf1238c761afec5a70bee7cc9895. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:08:00Z), 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/QZPJ32174086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb202d93bba5ef19139c8853ae0bd24a62e231072a6a0b5cce7ac145bb037b104. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZPJ32161338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706afe731010af6339c814f1129940b5ddf246368f1b32cce2cbaae17dbcadb6. 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/GBDMT1900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e8a145ba17a2950348fde52910d273d6ab24ea77c2c9507f9d26500f0fa26f. 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/QM24S1822267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790c69cecc881a999da189b1b04a33fe65502a0ffbc9b02cb1a58394f8aabcbc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GBDMT1700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ca29043dd2a6130399075f2bbfdc10de0a078463c5d093b0333d164763dbd2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDMT1700244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2259811a882aad4c9d6a39090ba36996df4b7a08ac4464420d8bf8363a95415. 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/USE831598806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a0c9c7edd6daa6be7bd81be3418ce7803121e1a7d7999bd8d4bc5a048d1b53. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S1650227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf790ee543da8ce58104c2e8d7e2aae6180a3f32693bcc58cf403af4a5bbc4de9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S1650229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9806de04714df76b03099001d32e4cd97ae89fb4b2ae8a8cd3a3794336548bd1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM24S1650231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303f8f569f34805a8f9f91b523ba16904b8cc99a555fa19a3165aba3c234f4a6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM24S1650232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc848b2a235235be88bd33c9bdc9131aa2acb671ce11d513fbcd28632d544750. 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/GBDMT1600240.
Acoustic Covers, Vol. 1: Songs That Inspired Heart of Gold
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f2ad022c65e1a00a061b25373b932bf24dc94406e958f267beff013ce068dc. 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/TCACR1689150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fa7b8a1b5f39ee84afcffde0fc5da0ef7ebcfd1eda97b41a9439a28e5328f9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCACR1689152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecab2fee4165478218fb157777abfc63ba8a7b8bf5e827a4112179171ad76a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDMT1600227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4a153f5129b87ae7b2a2300cd508d8cfc641bcf41bc43b99357832842f1163. 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/QMFMG1560085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ca29043dd2a6130399075f2bbfdc10de0a078463c5d093b0333d164763dbd2. 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/GBDMT1700244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee5b8d47a343cfb1f91e0340b4b9c52b43c60d0cd9e07b4b23927d35f8bfc74. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBDMT1700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc848b2a235235be88bd33c9bdc9131aa2acb671ce11d513fbcd28632d544750. 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/GBDMT1600240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706afe731010af6339c814f1129940b5ddf246368f1b32cce2cbaae17dbcadb6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBDMT1900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790c69cecc881a999da189b1b04a33fe65502a0ffbc9b02cb1a58394f8aabcbc. 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/GBDMT1700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecab2fee4165478218fb157777abfc63ba8a7b8bf5e827a4112179171ad76a7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBDMT1600227.