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 0x84ed8e6d3461a3986ece23d30e7e913f13bb2946214726905f97bdbbe73d02cc. 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/8f01b5f0-a805-40ed-961f-ab9a90527c53.json and https://artists.proofprofile.net/proofs/artist/8f01b5f0-a805-40ed-961f-ab9a90527c53.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 0xd7cfcc8b3c84d06f0a636cd4a7699c3909eb063936a3dff57bca40327c2c1a71. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/INU101224680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91f90009ceaa9d94d9f360347f761243b9b78e8d8e8db49456c5debecad4e77. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/INU101100590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c74a6e180201adbe79fb2f6af5684abe374299f34a6b7c46b594f847f742a78. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/INU101100592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09be6ef8d0a81472b072d70daf647fae69a227b53909924c1172251662d3490e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/INU101100589.
Hanuman Chalisa (Radha Krishnaji Maharaj)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc71941f4c63accfa2d9ad473a109fe6162ca4539688c0542e8800bef307ec32. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/INU101224669.
Shri Ram Stuti (Radha Krishnaji Maharaj)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981cee86bfd49a7986a906e6889f5dae52cb57039a3d8064bf91a826d99432c9. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/INU101224670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0a8cfd5fa35d87c8be6f56f9610e87e17d6ec9e3444cd6dce27aca29ba7952. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/INU101224671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6ab5f22fdd0f28b39fe6051c8ed08e55b2119a76069d009e771c77dc8e88d9. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/INU101224672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844d9eaedb6596d07d13c880c07c63746c72bf44ec92035e64c9d56e0ecffcc4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/INU101100330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89366a936421409d72afdf5e67809014268ffe465b390e752c49cf70ae39532f. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/INU101000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe597637d2e616e127f3ad96e2af3e5159e2425936d9667f9b70a4bfc678af5b0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/INU101000215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8042fcb1d682538dd88a3220d4faa14cc3fff8e928ec5b12718954a6b813d49. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INU101000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcbb0df7583f459dd2ccc84aa77307d730745f663c6ba9b44dc2725f73a6969. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/INU101800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55695bc17d721eb42e398b6a66f733101696cca5dd9300d0038665dcb205fc46. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/INU101800089.