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 0x63363e8c46acc42c1e6c45cd6dd36e0f7ebdbd19153f66394898b3b7d08b975a. 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/a29bd4ec-7b7c-41bd-b128-ee1c9b7bc6e0.json and https://artists.proofprofile.net/proofs/artist/a29bd4ec-7b7c-41bd-b128-ee1c9b7bc6e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Base In The Land Of The Two Rivers (Al Farooq)
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 0xf0b027e5157d820bd62170492ef38a33949a549f49b4e79d291d45c9292cb656. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2Z1901462.
Hardened Garage (The Have And Have Nots)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c08a6aed9705ac4933a18887e9b2362269525e0a072c64d1096a7ecb7090b. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USA2Z1901463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3151314e87898f10220168263e41ef0a84cd29b5011ab2b347559fbfbab736a6. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USA2Z1901464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb897b1d35922eac852501b17aa44bbfbb29d38ba29bb7472afbc3007032cdc9e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USA2Z1901465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e6a3224b1d475e2911de71f007e64b5f8249230043ea224db02e4858b42804. 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/USA2Z1901466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88419e2f128730a653e5c4d02dca0f9bd54a29a0742618b94ae38dae7e87fd0b. 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/USA2Z1901467.
Unknown To The Peacock The Serpent And Scorpion Conspire (Alessandro Cortini Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcfca5c5079848698f27ddc44df2ccb2cf842ccb0ddc35dbd1f62630c23ea46. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USA2Z1901468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a50e636076cff58fc40b07cc210479ba23727aa3c1c866015348964ebb6bb2b. 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/USA2Z1901469.
The House Of The Followers (JK Flesh Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d8120820ae8d2536f4fe303a00af5357f3ac11da55ed7938f9600da1a8352f. 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/USA2Z1901470.
Jordanian Descent (Sharia Law) (CUB Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f9e340e9d0c4c2e5f31c449373cc2ce86f2a0c3a7dab3957d4d45334a6404a. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USA2Z1901471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4528eed37b4fec67892b029c03be929594c81228963b46ad7665cd27a2a2f80a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEOE81800040.