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 0x4b155a380aec73e00b8f048161e0bb6a107fa3891a91f9df49ba71b784d8a3e5. 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/2eb17b8e-9b7d-4463-98c8-be097db607cd.json and https://artists.proofprofile.net/proofs/artist/2eb17b8e-9b7d-4463-98c8-be097db607cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Broken Heart (Original Motion Picture Soundtrack)
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 0x4d5a841d4ce32a9e4eba72be4554bf018bb6fe0c83c9188c84a7a97ee4390a99. 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/INA981800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4336f972bcd3459e0277cf1dcad9293e6b9b7d29c4d59b0a2a928e361231393. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/INA981800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942820f673f39a72919af0a69c4354d2b0bfdddc9992f9d3b442b5d1f0c4d886. 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/INA981700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70824a2ebc10a041c710d6d7ef60369d17e6f3d31e778ed91800659e1da7ba1. 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/INA981800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6165939133961499e3873ad7eb2d4ccc0293a96a098ccff7c2d08d4467bb8f44. 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/INA981700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d067c532e37ec5d10fe8c964e9f7315683590f0e1cca2b7f6b850681c0a3a8. 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/INA981700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf8dd999bb6c9f6d6e738032f74c7965ecdd5b40b8bbd121527992aa91673ae. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/INA981700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6d266a0ef091aa5e7bff47b92dd41aa4938462453ba26cdbd84d88ed798261. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/INA981700055.
Ente Punyala (From "Kudumbasthreeyum Kunjadum")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc489f6c5a6bfeadc09bda90cd0a7ffeda73049a6d58c0297b1abbe70d81d7bdf. 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/INM812400023.
Chembarunthe (From "Kudumbasthreeyum Kunjadum")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8434b93fcf4f76e809edc9cf5b029bacd1d82a2ff831302c9299b37fe26e6c. 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/INM812400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc489f6c5a6bfeadc09bda90cd0a7ffeda73049a6d58c0297b1abbe70d81d7bdf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INM812400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce751afa7505e685bf44e04af3d8c1949e9a28891e39f8915ecdb1edcaa97d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INA982300564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34cc3b255c5df1bfe1b1c76bf4e347993f4081becb76b07164c772bb520bbb0. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ING212201874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f9e5b88bc89e7f0115426b7c8e0e2d91e759d50b99e5697dada86e807d418a. 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/ING212200805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadda9f22965bb21e7162c39969d88a642761fa7d737c94cfb5624c8a35e0c6fb. 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/ING212200666.
Premasoothram (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10851809b6b9dac111109b12a87f64dcb93a2c4b1e4fd8fa82dce06a3368d1c. 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/INA981800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598ee2eaae652877116b96dc561fdc3c90f99732b2aa613d6f9b1eb23a886be1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/INA981800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb16f5840dc50a8a3205b9c9731363833893e9ff4e59f6e865780587991fef9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/INA981800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4663e5386c38851b346829eb1863f3db7801962440902f18f81912f13e03eb8b. 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/INA981800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5a841d4ce32a9e4eba72be4554bf018bb6fe0c83c9188c84a7a97ee4390a99. 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/INA981800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e029c8589f49a8840a59212e5cb9589fcf7129e1f4b7c8d4d8efcedd2867b6b. 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/INH512021302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028d83762fd73693fe1b1b3795e96eb38eafbead30cc727e7fb0662b16d023f0. 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/INS182006339.