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 0x2efc5ce1db0ba7a164af9b135802c65f865f9c2c97585fb8deed700a96d186a4. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b647f58-ad2b-4142-8cf2-9a10a5ea8bcf.json and https://artists.proofprofile.net/proofs/artist/7b647f58-ad2b-4142-8cf2-9a10a5ea8bcf.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 0x91bc7579b883056d411e5be0a56a70b25985f0e525442021a3fd535c70cd2342. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:03Z), 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/INW130704098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208b8c73031963b1bf5558ebb1fe2150b01ca7e6840495167fea8b955560f386. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/INW130704099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91233b06ce660a4c24a8f234017284201754e1162bc75395505ab8df68ea0443. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INW130704102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fb15e3305820098cebd3769a3fda03632f6e8480f61f6bf34d4350d39b8f1d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/INW130704105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9519e3ea9815345fb598c10e6c6716a566d4ddc1f3678d847545b780675e43. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/INW130704117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec0d4cb1d65a676f529702eb93bc2bd6fc808f08fb1a79be4a7ab442866481f. 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/INU101207517.
14 Non-Stop Paramparik Aartya Aani Feryanchi Gani
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8703e02f2db7ea056d293b81779731221d959d2faa97c3b5df3c43ed0981b4aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INW131004656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa613fdb084b824a6fe6d316cb6f3b7499e68019f2795a4a6e99104033f03408a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INW131004658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5fec62ce075d0d5e7e867b132a1ee64b2fedf3930a532d9f6761d19256fde6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INW131004665.
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.
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 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 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.