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 0x214c68f4cd87febaed152d1c37f5a4eb74fc855a31b8e8b818afba2237524d05. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6da1c88a-5986-4859-9624-c31fc16d57b6.json and https://artists.proofprofile.net/proofs/artist/6da1c88a-5986-4859-9624-c31fc16d57b6.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 0x09980f3bc96ade884f7a24bcb3acd316ff9efae4ce999f8dce6d5c3989677b99. 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/LBA0Y2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9692c814bf3421f89709dd80e3ab9bb453b04506262ec8985493a01922d05aa9. 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/QZZ662446275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910fdccda8bee24b6ef9c7440e525329859a2593404bdca4462210c17c01438d. 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/QZZ662425589.
Banda (Original Soundtrack From "Akhara")
Banda - Original Soundtrack From "Akhara"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa6e05b0064b36808b559c21ebe04ce0e9379a06d9096ef39294cb3f6819ddb. 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/QZLBC2400309.
O Rabba Ho (Original Soundtrack From "Jindo")
O Rabba Ho - Original Soundtrack From "Jindo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3a4742b1df8b4893afef2ac2612e519bee5ad6b872ae6806c49aea58c33836. 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/QZLBC2335382.
Bol Sakhi (Original Soundtrack From "Jindo")
Bol Sakhi - Original Soundtrack From "Jindo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf093af3e44c0311fba684923689d25a7eaa87a0ea4c22c77822158582085033. 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/QZLBC2335384.
Taara Toota Toota Sa - Mujhay Qabool Nahi (Original Score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b6a3082bf92282d41a5dc8798b018dc98c309f13991f51b580010cb1c829ee. 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/TCAHG2349391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b2c46d6f33fe90ba787f504c5dcea4cc22e49098270e4df8b66dce9d718b24. 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/TCAFK2177197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff4caaf62b5ef522b35de68ed3383b6d9200143603dda2c7e895327ab9e41b8. 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/QZYFZ2353399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd316be431038511942b111864fba4a81dc8113ba5533313a88870b90caccbb. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/INN2I2406776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f075b7d70cfd768061571fec49686bdb604efdbfbcae68ccdb686cc80c543b. 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/INN2I2406777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedc8e7b7250bf4a26220d58d0f3ef5be495ce8f7171ade81f7cfd7ab31caf6f. 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/INN2I2406778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f109ce7c564fb64d1a11267d34e6879cad736e7bc35552be25276e410c94c2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/INN2I2406774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c19c13cf77e1deebca90941b9e9285bcf7c67bb479a1996d2e7201fe086c7b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/INN2I2406772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd89f76a3a210dacef44e108ab73bbf8f5df0edfbff2b678eebfe3d6d3ae60b. 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/INN2I2406775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0452ce4c1fce9132931da61bbaab539b8febd1cf41d362a090796df95320e209. 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/INN2I2406779.