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 0x353fbd853bf1d73586dbef8054ab17f8a3e9714229d1fc1151b0fb44d168d027. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aef0bc54-2405-4011-92b0-bd8fc3cd7d64.json and https://artists.proofprofile.net/proofs/artist/aef0bc54-2405-4011-92b0-bd8fc3cd7d64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Daivanaamathil (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 0xe203cd1b9fcbb5bf75dddbf19190fffc1220e2cb80f4cb167dd0e795a54d9203. 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/AEA0E1913279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d3dac0ddc3e5be497d34a34912cbd310b427c15ab59d1c0fd0b9552aeb9545. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/AEA0E1913281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2153102b0fd962f876cc2d7e6bfc12ea076b19cb5c08ad967b61496c8f085699. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/AEA0E1913282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb02c5722ba3f3d1087d23e3efaefa8e6b1636fac33bd6d1b6607c427ccb3320. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AEA0E1913397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d6da871b4538cb4d6b2e2d5a606761561c49d795b756fff6e64389ae15a7b2. 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/AEA0E1913283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bc99affff994e5c7ec63396ae4274b3f3533813cdf2b6502626aee3048f9ec. 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/AEA0E5007238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d1b441fefeea7824a6fbadc7469a7bb27b210b253b2c0dcb80f9ad04220dac. 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/AEA0E5005512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d4ad7d35e6480e535a8ba66c89bbc5d348181a6b49e8d5b82e8d6a73fa77cc. 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/AEA0E5005523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068d188cc59c4f45f7b9184c0c9258004f39a95b57efdb9d1ff2ca5f612c2b0f. 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/AEA0E0405051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4607107156bfcf1872eb4ec330165529c32946639f84facb7aefe5b7d734d243. 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/AEA0E1000999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9ba866dd909046e72cc35c49c1e91fe3ec6d710db954af564bc5b29ef5e44a. 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/AEA0E0004527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1f1f356d62c2ed8f201e9691b3a4db8dba459c24a74e30938ea4ac0ac7e50. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/AEA0E0006496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edbee42c10e2a2bcb09f3c2cf84ecc391c8d47828675202e751e8625a640005. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/AEA0E0004470.