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 0x6416ca7178f279461ad4c39fbff7574e5ee7ebe9831e16f962a347dbf9432e83. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bdb66ff-7721-42c4-a173-904b9f35a5e3.json and https://artists.proofprofile.net/proofs/artist/3bdb66ff-7721-42c4-a173-904b9f35a5e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
14 Non-Stop Paramparik Aartya Aani Feryanchi Gani
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 0xa805a349bde91065cf7fe3feee7e40c10d744b3db1be9a50cb7b018800b3a7b9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/INW131004655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8703e02f2db7ea056d293b81779731221d959d2faa97c3b5df3c43ed0981b4aa. 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/INW131004656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49bc06b1cc08e9ea94922f5839dc729df4797ff08944a0f8216dd665fbe98ac. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/INW131004657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa613fdb084b824a6fe6d316cb6f3b7499e68019f2795a4a6e99104033f03408a. 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/INW131004658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93e2c654c2ed79a7303b3380337cf57a26c561bd5fb4e9c5978560289692044. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/INW131004659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc3719da8aeff05fd1fefb452d93243a2678625208f019c1ddd83c3a9616852. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/INW131004660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9562f7aa8b8e07828fab4ad4edd472a474a3ed80b0101ec332f50019ef94fe. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/INW131004661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e1382de5db1a3a5af90af3f6aef57ef573c627169b066cc7afd13e17122974. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/INW131004662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4244b8567dec1d487b32edd0e482e266306debba15fa2b9486af7080ff8131b8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/INW131004664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5fec62ce075d0d5e7e867b132a1ee64b2fedf3930a532d9f6761d19256fde6. 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/INW131004665.