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 0x2f5e93cd3748a6fe11286c5a9c6e3d49818c1b6ae38a9951782c861abe877465. 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/b94b0d22-183c-463d-bafe-529fe9d6aa8d.json and https://artists.proofprofile.net/proofs/artist/b94b0d22-183c-463d-bafe-529fe9d6aa8d.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 0x932e0d156e8b0b2414474e083a2f4b1cecd08c5126895b9971c2d3f8071b4b8c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:05:33Z), 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/PHV031910659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b86278cfa718e7ddb9fed079f0b33d21f4f295a339b881f7d4bb5d89ee8c25. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/PHV031910658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0e9665286df0ba286949f48f9591c9dbe23b611827a2b993c856b96a25e141. 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/PHV031910657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1359eaa699add5b2337207dadaa52e9f7feb5fbebb5104b8e22fac6853c42bb4. 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/PHV031910653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790610541642048a981daf622b6e4821b856c6ceb9d40a10c66a1bea681fca9c. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/PHV031910652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deca319909d85a6e33628967ee57bd028dd363810889a9932f5b0e5f4a91d46. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PHV031810511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098b254e4a84835bc5f358ed0937f82e7bc558005b7da63730dbdd5cc80e8508. 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/FRX202015791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b78f325a04c8313d68a72e5f7de689c29e6096d3149e0738b11dc541133a5f. 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/PHV032111608.
Iskandalo (Original Soundtrack from the Vivamax Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c78d679228c3c97582f7853bce7c58fc641703dcca5090e0f5b90d23848a61. 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/PHV032211939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6392601b20b89bc82d03a2aa5392b5922693dc4d01d4fe05ea44d5d37a8523fd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PHV032211920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c78d679228c3c97582f7853bce7c58fc641703dcca5090e0f5b90d23848a61. 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/PHV032211939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6392601b20b89bc82d03a2aa5392b5922693dc4d01d4fe05ea44d5d37a8523fd. 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/PHV032211920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bee73547b7c780962d0066a7efc4089915be2419b36a29b52292d4979741dd. 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/PHV032211927.
Secrets of a Nympho (Original Soundtrack from the Vivamax Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688076067b7669b7969423c72d2d6357eec822a21f6e933025ec4f93c9d93903. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DGA082325401.
Sila Ay Akin (Original Soundtrack from the Vivamax Movie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3433538e5c5a3e5854f78b1655337ce6923dbd686caf16ced22d7f2fedb4d9ba. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA0S2452477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a245fd3ff7df80893b0d0eac72a700c42cdbda0d93c57208155f60191ee9b9. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR2X42505564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225399c281204e5054664713500eb92926dfe8c2c652b23910e4122b94db5e6b. 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/QT3EX2501859.
Sitio Diablo (Original Soundtrack from the Vivamax Movie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5164393e7e254fa9914c4dd2e2e129653ca47163ba4433f51b6c7d651d0cd82d. 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/PHV032212043.