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 0x6df039086bd0cb9b2d3e94f51191de1d7c033249723b19bd9c709f36a7f720ae. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c7c6c29-a9a6-4e51-ad42-1c8ff7ce27b1.json and https://artists.proofprofile.net/proofs/artist/1c7c6c29-a9a6-4e51-ad42-1c8ff7ce27b1.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 0x7eaab465ce32e4b63272920a094e6ad99fe66bf23b5fd9efd4d555ac89a347f3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM7MR2200541.
Most Beautiful Songs On Fingerstyle Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9e20700fbe1ac072c98554607d5ec782dbfcea35df7908f47a5fb9ac1ecf7c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:31:26Z), 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/AUBEC2153302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7d201c21808236a057d6b01c2dec64fcda792f67bab909ef1be8e467d39335. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUBEC2153303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32aed0e177a640aa4fe322af97ad37284f158ee3b638c74e01fa46fc457ac5a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM7MR2200550.
We Don't Talk About Bruno (Acoustic Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aff02f703f20a4ae44dc41ce8a11b6b29c54333be568a4abf0e728a6fbc784. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM7MR2200956.
Happier Than Ever - Edit (Acoustic Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ecd92b6d41c92d6fd7314268651c54630c5da3b42650ce97988e89e4c7b9c4. 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/QM7MR2202510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb702af3f8a6ef85c8d7f6ef346603633841d606e6d86d5943e79e339964f4dd5. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QM7MR2204028.
I Like You (A Happier Song) - Acoustic Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8178266ebcba3742dfcedd947cf174815e4b6f58198f85869773fbe9711d5397. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:21:47Z), 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/QM7MR2204613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe9c0df70fabfdfa1c63ffe6a75d1ebaf18e0a1d3679760a4bec535a9a82f24. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM7MR2205232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf561d81ab765d9f69c1e26a4927e38751101fe77aab9e710b90d5fef1454099. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:04Z), 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/QM7MR2205474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a463622be4b4526f4109c16f31b6efb8a19bfa909f485f11d8173b78c02f6b1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:08:51Z), 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/QM7MR2205645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e062db8b93fdf78ba1f9aa6e0737413827b16dd1d36bf43c8d98da463df8781. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:13Z), 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/QM7MR2205862.
Somewhere Only We Know (Acoustic Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38003c6236634132a16312dfae45e8de212fb8e48d6dae1bc213b3784342a3c6. 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/QM7MR2206522.
You've Got a Friend in Me (Acoustic Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e73c0c4e02e6a08dcacaa338a6b9a803749d53015542457d20095c0ae8c2ca. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZPJ32226420.
The Last of Us (Acoustic Guitar Version)
The Last of Us - Acoustic Guitar Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c4529c7de7dadca022c2a965c7a366cc2c532ce48ecb0795eac19b30dcb5e2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:29Z), 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/QZPJ32235545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4fe54b5ebe90b2846ce738288d6efe2b130e6b2fa0af76c39c713e3132f74d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZPJ32248416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864743661f6d4e2b96d7a18a5c4dbc955311e951be87181500830ed3676f5fd9. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:26:17Z), 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/QZPJ32252597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866c209f6ebfaf172ab30d94b72cfe9079564aac8eae9cd793e8a86d09b3227c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:41Z), 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/QZPJ32260111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7b2daf9f21c8b29f74dc35d8215c67ea0d4ab386694abddab969d27ab3f2b6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZPJ32277260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6464f45deae5f06b7698ce3045569c8c754dfcaaa0fbfbd5af648319b45a07. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZPJ32309824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf22f62277b71903e6b6ddce9c0a322184eeda9adcfe5a16cfc504b208a1d8d8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZPJ32326188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edb03f6789f040e577a0afac9b15e378e0488fdd9be75f05b8a23c47d1316d5. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:36Z), 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/QZPJ32344926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6e871de09f1053097257f9a270bc85f0afb7c861bcc299148a43272edde90a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:18Z), 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/QM7MR2401703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae079e5370f74a6423aa0dafd0bf33a1a3a135723579a543e7afa5f7c494caeb. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QM7MR2402011.
we can't be friends (wait for your love) [Acoustic Guitar]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362840ab55ce1aff618e9c2c1e4b5a92dfba67b661c2d9f8dae830d965feb775. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZPJ32422327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd118c1b722e54452d27cd91c0998a53e140293f7fc1febb2ea05983828b55e9d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZPJ32438159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c441c4b3a92bf7151929a1ddb7143158e7483cf0042f4b58f0fc03d607cd3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZPJ32452810.