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 0x3dad1124964b8366dc66e02c1d90b773da051d748ccbf639b178ad37866b93ea. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db0ce265-f1b8-466c-90fb-b64a9b3d2220.json and https://artists.proofprofile.net/proofs/artist/db0ce265-f1b8-466c-90fb-b64a9b3d2220.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 0xf7c42bf09fc4feb09f8f8c8708d87fc6b16dfecf4dfd07f97813134405362727. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/INS9B1400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffaaee0e6bdd6c997aa09763cc64577275d10e20c92974549b772d869c669c7. 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/INS9B1400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6510d40253ada8c2d11c71a8229f652cca80a11f2f98db689a803e087e90b044. 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/INS9B1400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66545a0c25913f27ff7c8a15934634ee6c8f96bee39f187ebcdeb9abb9e317ac. 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/INS9B1400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8c3ed1c14e860ef744f5a7eb3ad9134997e2a70f4232981ed501225f391095. 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/INS9B1400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2912dc1f85a4061c6e9b4cf08458c4e39d8929bc1df99bc397289191e68816ac. 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/INS9B1300360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bb75ce04e0b99a333cafab6be0d04b57138f025a640d1e88126b66db9e8c1e. 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/INS9B1400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb3d10024966bb7b791454ca8865872c6143f28f1b21f5dd4510513980ce1f1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/INS9B1300355.
The Invisible Omnipresent One (Kurai Ondrum Illai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb018cd30869af7cd6c709d526c1ebf0f0c3b552d9699f76743b2e0dd4306c90. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/INS9B1300359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12269e8313fb21f7badf07a41d088c752075f46e85885283f13d89c80ca5a41. 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/INS9B1300365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3889c86f71f9cb7d5d0438b8162eaf7c2cc358342487323afb5eca272bf50c. 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/IND291821932.
Bhavayami Gopalabalam - Ragam Yamuna Kalyani - Taalam Kanda Chapu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ea7795ce68ffebe5bf3e3f572d419da12487fc82921a29d2f5bc55b3fad83d. 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/INS9B1900018.
Brova Bharama - Ragam Bahudari - Taalam Deshaadi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3f000731a1c295bc4bdef9f1e068c4d9f9376b7dd99b7d6a9956bc705c2ed4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INS9B1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d0c64d8cc063ca064fa1023a2cf235474f273d49b1d149c0374af0a68f3a48. 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/INS9B1500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c753e23f0adbbfccd111d2cf94c870bcbc4e6466b2b19d2b4ca899a8053e16. 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/INS9B1500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc351c2c611f4c5d853cdf4b1c70797e8135b901061113185fb4f3e85e45b164a. 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/INS9B1500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb687d74021f2038860b3f91a09ded4b1b1d59451e282f10a5c04493fe6e88c. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/INS9B1500210.