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 0xbf5f56a9703839659f2a5faebed91329f5ab6ed4cd3cd3f96a1a702cdacd9cb7. 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/a922879d-0051-416a-869a-3aae62fc4ec8.json and https://artists.proofprofile.net/proofs/artist/a922879d-0051-416a-869a-3aae62fc4ec8.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 0xbce38fdea10d7398a116a27c492180b3eca7aed3bb894d0a1268c69c221b6122. 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/FR6V80131887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4d904eafc657c14342437479133700c0840759365a4f4762e25fa4e7891358. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR6V80131897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4544b580591de6dc0076385c5ba771abc3a06308ee93f3b85844cf7ad9837c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FR6V81825636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85c3ff8cdf174ef2cbc3466579a55f1712ef4868224461c4282dfd92c53724a. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR6V82146255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01937ee008f3db2089ee97bdb3dd4e9a2406476e82d5c56f3b9ec89cbecc96c8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR0U91501364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa712b9f8556971bf29680f5f1e84ee35b0f7d9c88132bbe9121fa1c8fe641cf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAEW2021806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2609a8e2224a822eaaab81b3a5065ba2b1e3ba3028b872c130d681ad45d8957a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAEW2021823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b78a1bd344a48c0bea22e3692bd10c27f481dec737b4bab7bd4c1ef6faaf17. 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/TCAEW2022190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d10de2f911184cd0569dd073740215df7839ea774762158737399eb5e226530. 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/TCAGP2245127.
I Don't Wanna Know (feat. Ce'Cile & Kalash)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fa0e5eaf956a503ba6fda94336ca3f3fb28760a560f89a6e99c6cb3c2f98c8. 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/TCADL1836894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4705cd4726b0aca3b08171f67b5b2991d5d6d3c9e1c47a4410172fd85d26a80c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CH6541825061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2057be2433593da48cd38dd9969c8d91c4dd56d8f76f6faccb66db286fd3c9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CH6541968527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50e36018a436ebf9463879ccb41b756659556b3cc6f0717bc4673bc4dddbff6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH6541673302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dbc01342312de27ccd545f236145e10ac9b4f3e97b6df8d2170d239afbb612. 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/CH6542205970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63212538a5fea3a964350269d7bc097d42f8aa247e528750c21fd126f9efe958. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH6542205975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b32976aaeb4c4e3323791ac900687989b0b78670e2ab7b7c5aa78aedacc3fe4. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/FR6V81897182.