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 0x5c413cce3b3b0511fe16440b5ae5d7c3b38f3331d494d0c8a360fe11fe194975. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec76cad3-5c1d-4b43-8cfa-70cb920b68c6.json and https://artists.proofprofile.net/proofs/artist/ec76cad3-5c1d-4b43-8cfa-70cb920b68c6.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 0x0db16af3e77eb36dcdfb3e1346e06fdbd8c3d2522f4ebe0c2ca82a279d2918ac. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/NLS6R1852045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd71ededa457aba81700740d5607b691d20f8a20a16526f4c0ca2a63b63d434. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CH7811930634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033906f4f74880b35512a1d81f68942ae1dbeb491ef4f2a5e2c508d8167c85f4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CH7812061307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802af29a8e3d063a3a4915ee9743c2c22a5eb94da2b0ed44c1949f37b58ec0f7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:00:08Z), 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/CH7812234206.
Promilleweg (Voggi & BaseTo Handsup Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd8871c99184757de0a1a52de84e82b24225f776fc826772e577d910db6d927. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/CH7812341726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d1e143237fd92dc6ebb934ff45e91924c0d92aeb8701471c3d6c856822b51a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CH7812354943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6c5bc135dce25e65be408fc62197535afab50c8540d8fdf6649873b413f730. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH7812414376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff61c3c565dbdbd2c889f44718418fa037b5cd7e9ff9906f9b94f6f704dfec88. 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/CH7812422128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f05b7abd79ec2f057e4c7e9bc2962a74fa89dfe7499c36aec482ad223d95213. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH7812549227.