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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142b7afd22f74ff6329caf55c03b936a6ce3c3f94ea003d8c11795c180081057. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de30f6e1-5371-4a80-a89a-8856dc93e9f9.json and https://artists.proofprofile.net/proofs/artist/de30f6e1-5371-4a80-a89a-8856dc93e9f9.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84126f26f8f85403ffe19a0e1769159dbe03d870f45f3aa0922f0b3feb43d26. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/INV161202482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0038371bd529da147d19f5faf527acac2f33660ffc06dc3fc301ad2db8d44030. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/INV161202479.
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
Sri Eswaramma Subrsbstham Bakthi Geethalu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9d824737b23782c42ca5fd9421f67a7059b6e983cf1704d7c9a2322af7dbdc. 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/INA170702893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8209e9d80554ba1bb2c3e843ab70eb7b479a5315595315ffd4296cf275aa235. 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/INA170702868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6b80a3e38e470f282caf0025946b1151ad5cab8b4669a706ffe355757aa6c6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INA170702820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cc604aa5782f82b7f82abbbac2c5719c5ab68e5636661803c2b031502c3302. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/INA170702827.
Angalamman Suprabhatham & Thalattu & Periyayee Kavasam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28efe7911be8db32e703c65fc1417ce6dba3fefa109d9340882821a2a6ee996. 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/INA1C1300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598e426e4570bba084b2295cda333500db8e9ea82893222c7650f5a138737575. 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/INA1C1300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93244ba5e6f1e485295860cfe046de00a4abe461ec874142bef7ec7e281df975. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INV161102365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c38ed186e88248f3b5c468dd4746f32b5831ad07de810ac98821c86734d54f. 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/INS850800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ad64dd91816b59e20b5edf5dd892eb681a1969b04b06d8494c4a9a342081fe. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/INS850800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b35ff01d97ef8d3d4de93825e41823d96a1741f62862186b7558e27c6ad2e16. 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/INS850800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776e7c0cf505522d290bf578df98fa2919e41d94480b3cd1c55fbd5bc7ee5301. 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/INS850800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb733df54c1a106850fb5922185cab7b5224c8b39cb165975284332ce30d80fb. 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/INS850800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f20423eec3d310d8f5232c8084d29fdb854f4717b29a465adad7aaf4b66b48. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INS850800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5f6d5e9ff4ecdd653624ade40863b1cfdd264a6bf259a0d7f9f411687c9db0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/INS850800021.