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 0x54eaa253821c7c00729f31d0a9b75fd101025e8188b6af9916e48a144656aade. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41f57eac-ddea-420b-ade3-6d004de0ecdd.json and https://artists.proofprofile.net/proofs/artist/41f57eac-ddea-420b-ade3-6d004de0ecdd.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 0xbfffce6d3e592375ae12020f58f1ba963defeacb925a0c04ee9ad3e28becbe1b. 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/GBMJG1708152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe1ec991c266a523bce68df7aba1ecdf0871bce3cafc0f44dcf6bf2b279ed0d. 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/USHM21560593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baad6c23188bf2f4d5f5fdc9fc8dca3af1aded0b7590d66e2afe2e7fe7fbd55. 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/USHM21560601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa4582beba8cdbfeed805ea09c85b2d65165c2af8887eb24bef040ac2832851. 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/GBMJG1510877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3d4a3bc3023ea1d608784eba83ccbf3ae3543c4a5d0d57f87a17dad4469f72. 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/USHM92131680.
SummerTape (Reggae and Dancehall Mixtape)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee33e65c0091fe9d47de1496aa06cf04c44cc9f9e45f13509e8951d87b93f415. 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/ESA011308023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc9da2bb5a4de3a6e94a7303e0791a889842bbffce99fe1db7645f1ba1cb3af. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ESA011308029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1f94e48d30b263d0eba0034849707e3949d1b0be3dfaaa488164a5f8e8d015. 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/ESA011308034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0248cc64fb968096b98546c0f3501270da1ab7b537d26317380ff97468d0ee71. 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/ESA011308038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9f8dafe01a32956d7dafaff87f5b6efe4790f4021f7757568a4cac544f4d94. 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/ESA011308043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f70d00a0aca7870f4791b3d3ce904a21caaa143de6edeca3dd8a7e796dc23b. 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/USDHM1608947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62ed13a57ecf7eff580fa00b7e74bc3e36987b8987f873f1ecf47ef27c6a3c8. 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/USL4R2227603.
Zorros al Limite (feat. Mr.Sutra & Guiyo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c76cd224c7d64e811f7c3a6acb759cca4955c610f6d49c526bddd160bd9610. 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/DEQ121854592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7cb6950caf53513ca72a1adcc7cb431903452200d49ec1f86e3e087eda7f6e. 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/DEQ121854596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc075892440325fcf494bf9a00c3413637c12969cadf3da7619e8965538014d5. 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/QZK6K2087789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74ffefa544bb1b5a8760cec0cbd5cf6aaa96ff526dbd94f8b15f974792bc217. 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/QZNWV2468222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfdd0a9b2d9fccd9c2c8bb8664a7427098cb52e1c82dbf47caabc140c6aeebd. 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/USHM22168982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a47cd6524f48ec9ffea5fc94480f198cbc96eb76f4555aa1f921059e7742dc. 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/USL4Q2175043.