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 0xce4f07e108c15563c6826f131f3ba5bdfcf8bce9bb3191078c6b1f272e573158. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fee44fdb-de9f-4658-9c76-86c9ad457c3f.json and https://artists.proofprofile.net/proofs/artist/fee44fdb-de9f-4658-9c76-86c9ad457c3f.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 0xf4134fedf37318eaafbc0c6d1e3a4dae617f9bec0f9253abcc82aebb78560c65. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/INU101205044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554dbded54cd9253a65478801cf7d520926bd13149d18e040fecf04115b29f32. 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/INU101205048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968cde38b8656c75e1dcce7bc99b2c73cf6a0a49e7e4aafe0c471fae9380fc10. 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/INU101205052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c1c70372c28fb71a22eea3b28d37a10254c24a48d2155760d235765e92315. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/INU101205022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17de8eb7cbd1753dcd2b5a86a6413cea66df9430b0f4a9b98cf5580f21d3b8d0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/INU101205024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e9e3f744f560ec0dcdf8c20594afc07550ae626ff58faa22e828726e2cba58. 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/INU101205026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b24559d7253e41438c6f842f280c4b30b8205c6d52fc4a83d02a5b582fe7a6. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/INU101205028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b02ef4a685e623d261952999af8323815e6a3a8632dda4fa9ebdae6f5f6c3af. 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/INU101205032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f68ed35cbd69ebe70f077ef45035f8645fdc05e2c4d3e2d3a5c3319b40b447e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/INU101205034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef620365980ec4f8e8eb8aa4cdf7509d7844b18a8a72dcd138f245c5a398c760. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/INU101205036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1438920d663b076920fb46508ac46240e9c3dde056f6c729083ca00938e681a6. 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/INU101205038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1296f06638b2f05b63475cec7fb04018cd0a4de4c8ca8e69e8a3a193c1eba0c7. 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/INU101214384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb28111055844fe034cd351bfd7822faaa523447c7ffa1f15802df5b5ccf31b. 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/INU101214391.
Gyanba Tukaram Bhakta Sathi Toh Jagtechi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5d42c1aeef99dee18f853faa29c298b0042b7bea8f84384a6439f16a590211. 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/INU101215099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560a993d49af8ecadf333db19bea9e32dc8c71d533dc01a6237c410b64869e9a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/INU101205706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e65dfec37717e30d00c846eae494d1a18b9d0aecb82776554f9eb66fde934d. 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/INU101205602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870f7203ba2186c17dce783f70e61ecbd6b3c480c9fd50773155761bd723fd1c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/INU102300388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de6ea5c6af329aa6770ddeb07dd44a7afef64bf63ead1194c670c6d35ff2e58. 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/INU101200802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f939f06b8063586b2ab6474be94b49845413415c39f44bd8ff9be7a4caeb4ad. 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/INU101202353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911c98103b16ab20d8d9202bf7a0f64801dd09183de3736ce32df03a71af78ef. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/INU101218982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5e94a9b10e7f67489934035681eb6f09a830544866caab07f737928e6a37c8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/INU101500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f82b8312b275b97091bec79cf75450636192df1ed025031c85ffae4cfcbbe0. 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/INU101500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565eeae9ed50450f798a120447d54b90bf9b9c808570f209c388cebf0e8c7e81. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/INU101209526.