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 0x2dfab869c04d4a2a87547d349d47a17d090141f7f3342c401cd8bbee1f5dc5a3. 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/198249af-d828-4c8b-80d3-3edb924db0f6.json and https://artists.proofprofile.net/proofs/artist/198249af-d828-4c8b-80d3-3edb924db0f6.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 0xae99c8d0b549ef523e3487af13bb2f131de155fc00bb2599488edeeb4bd31964. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/INL231713929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344aa15ba5b854bf3b65185936823d1e6003db5060f5a3c028a7b78c5cabaff7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/INL231713931.
Udaan (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b79f2319a454c75a3d414be903e2447ee6d679fa9f8f39d42e1192ae0f296ca. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INL231802942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebe286856cf339bb29b6937531ccf5db3ca14fe16f5749e35c2dfdadd74c972. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INL231802943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc24ae9d0572e4879d1c8789e60e4196abcfea497e2f71a325f37efcab11e66. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INL231705062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287cfc52af14023f1b3da5b23e55210d15487929604e804cd09a72bba4697b31. 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/INL231515738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13868dd3b9dad0f6c6ad5f36212fd1a9ac376073200108ac6c8fa2b491356989. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/INL231515739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233648ada564168ccb9b4ad7d05ded299c0ec36d266c3d168755a67dd60e5dfb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INL231515740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddf51e1e927c54b00bfbe3782499ea7430a3c25ae42da8172d2250a4e94663e. 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/INL231515741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3eb7b795d40889c62d64f6fe1c4e3fc9b0cb4be5de75009f9b193c45ed8781. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/INL231515742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5854b50050c40aa2370069f104d31798cf5492fba3e9d132343bcac03eac8f20. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/INL231515743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153ac59ba668bba699cb49a07244838ef94c8127edf2759882623104f524e1de. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/INL231515744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26bdf01dd7d014b7a62243fa246c65e88b6611b6d07abf776bbf65f88ff3de9. 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/INL231515745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf71d38e081551cd22781e51194af07e3e58115f16b5f03e6eba6390eb52098. 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/INL231711995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc5027947a00c67a14b57b3b4820095e5960851481dc5e4aef516a4996e1d8. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/INL231711937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d0a98bcbe0c67b52526a0ab2228b5bad6ed8b37c51d8cc78be529bb2d5b81a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INL239025698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8ea5f66c29621b33070f30accaff960a99ca207182de3af5630a86c6eaab52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2459894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbac06765e7260da336c955ec5a68d6bbf00f32c7e9f537a26c236145dd7153. 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/DGA0H2453321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14775849a4110bfcd80b751b36d18a1ceccc993799ee99f799b9ef216cb44c2e. 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/INSD11947666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619f71602732da94f25185803048160d00b50b4459812438110d27479404849e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INL232404000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfebe11b054c703dadf87fd5879b22d492282728c10806850ddc6986d848df61. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2457661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2498cbdbd72a133610abc172a911b1d9382e4a8b1eb01569af36c681a3a7d11. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/INL232300221.