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 0x7cc7d6fc89a4da8c5758d77d7e78d9d097fa15a314f5d0086e8456cc76b6b2d1. 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/a23ead41-99bf-4a9b-9e52-631e5f3e74b0.json and https://artists.proofprofile.net/proofs/artist/a23ead41-99bf-4a9b-9e52-631e5f3e74b0.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 0x6034571a3a3db7debbc72c519c9a1a0edd19567a605b1dc1a1b37d0832f8f997. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEY590300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa85201bc17ae8813c5d141e6aa14353c36d8e3e40251e518d233a27d8c9f562. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZ8252051401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f65ce5ea65561b509dbaecc0ad774868b26f7d9d06330ab72db854267a5cd6. 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/QZ8252051402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21c6c0c6a0a46e297939404be13e0c4b628064475905448c5b51e608e454a37. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ8252051404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b6b23fff5e1b615020cc56859352512d7a751e639f1b00f2c994d98f3a807c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZ8252051407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b93518594238898b0bd259968092861f85891f9f6dca3b47092681fbcf057b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:04Z), 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/QZ8252051408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0ccf0f0628bfd7aab10c80bad505ea0b180096f7823df557495e61b6a8bb43. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USX9P2377925.
Tu Café - Taken from Superstar Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb724746278b4e5552a43c2dc4997d8cf4a74f0030a5738df68fa23c821383e3. 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/CZG121000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc20cb6fc97733e773e291aaf75a77382241e1d67c025cd757e942908fb86ec. 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/CZG121000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9666c9a6b904089a0c19b7333458497e6a63e2fedfa0e49b07061024b5df826f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CZG121000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547cb80261b27b56d892c34969d591fae310dd7bd53648f81a5b60e5f4674075. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CZG121000007.
Tu Café [(Mixes) - taken from Superstar Recordings]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ad37e38e644893a65800384c6e7971b7caab7b22c831614f8854bedffb7efc. 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/USX9P2377921.
Process of Living (Filip Motovunski Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10af6a82ca60ce52471a2d4f0d2e52ddd39cfe80e480c591edfabb1ba1fb494d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ8252050131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09c5acfaa9fc0ca844342c3e358039f962e35d2081950250eff785c89db0ab0. 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/QZ8252050132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fef97e15396fdfb26e1cbfb462038b773dd3e8669f48d24715352f5ff0a968. 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/QZ8252050133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49e1074f78e8104be4c10bdfff892dc3c53783a79af02296f4bb7a790203eba. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ8252050134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc1f4cf5a1340519738237bbbca36ecd24222387b49467af0489bee7dc102eb. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:55Z), 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/QZ8252050136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d702faff2549f08fcd4b6cfc59a8c572dd4264684ccdc5dd6b98e6851157eef. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ8252050137.