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 0x9e377e6f574b32e4747278eba5ab031cfdcfe4ca83610b9affd86003d795afbf. 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/d484b762-eee8-481d-84df-6192d7ad5aa9.json and https://artists.proofprofile.net/proofs/artist/d484b762-eee8-481d-84df-6192d7ad5aa9.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 0xf2c9543fbf71b170af8db2b21df62f4f236561d6e0956b4c4763e07885a4eafd. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITH641927449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387da93f19bcd83ad33d622e5a6dcad268ce7106b1f31e09ec7f4f8056e0b621. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITH641927450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b1048ca3c645bd9fd2d74df7ff251b0b69d20a93a4dee10911ee8a3176a000. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ITH641927451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9954ed70b921a1a384993a4298c9105929b7efbc57a97f098489f44d92f88581. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITH641927452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc200840223df4a56bda8475f0ff8832288520c095f54b45c8001a10a6cd70916. 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/DEU671701933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f746c55196e49029e9e376ab14b4825c1b33ff679ae56a15507da8fae3f4d82. 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/DEU671701935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bd02591a1822fe70270a575f1d8ef2996083c779ec623b35e147ffecc57612. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEU671701936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b08d726e27dfa921972a1b927c87bb5a5ace3b9bc94fdeb6ca1ffc22a2765c. 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/DEU671701937.
Poem Feat Rai Knight (Digital Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcad3e8d529f77e5e00848f01d3e5904e57b254c5c914f9638fcb8cfa20c1c27. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEU671701961.
I Can't Hide This Feeling - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e359d22fb895217751b1243f4f2229ea24dbaecd4bb6304a50747a521aa2b77. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEK602216010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5528a2637696160e006b257643cf9b9d757bcbaf1252a5dfc669dec1ff2f27ab. 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/US83Z2322889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714c0aee8b961191253d1adb11f54f4fb9af15c47f59d7909ba29b92f2b22ec0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US83Z2322893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6415f365747fc8acd5a33d2338ac065863ce916550bda3d681675b64bab487. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/BC5BL2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1448e32793470d7b421e127b2d48198f6620dafe1fec5e19fb0c47f5a036ac8. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBKQU2239699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8c56936f3a5400d5128db238d7b6a36f13f2a51b33cf7c921d2922ec25eba5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEU671602174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1f873941bad27b267299be16bc84b06f91051c424670b135a89fa044834a41. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/GBCPZ1408041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1af0450bcd5e1c6020f81bb767f1e3144c2edfd88c35ef06c451c025b4cc75. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ITH641060502.