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 0x077fc40d5ebb290f4b1bf0bf23f358ed6b998cfa0a0acd76899718db0b87a540. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a28ef12-82b0-4f51-8c8c-b23fe1eee622.json and https://artists.proofprofile.net/proofs/artist/0a28ef12-82b0-4f51-8c8c-b23fe1eee622.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prabhu Uphar - God's Gift: Hindi Devotional Songs
Tumhari Yaad Baba Ek Anokhi Shakti Bharti
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 0xaa2588910a04d84170ab60d3369a2e73bc84eb195b2769837137d787f737eee0. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBLPQ0910352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3c3a11355c7ab071890d7de57bf2a7979f7636c5c004e552b5123b8e51ef23. 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/GBLPQ0910353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d56194df1088c9a920b8a51efc7914014ae85cdd3d22842125dab8343dc3b9. 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/GBLPQ0910354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41c423654a3aa6ae78ea717397893cae634b1ae3d666e28dcafef965bfc8f80. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBLPQ0910357.
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 0x9ad4d95f503ac73e4a59f0e9b96ffa1de856e5759eb1cbd2020265061e933596. 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/INH100907118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf594198b03b699fbc1753a4d9ba331ac7ecf9882d4341389209493d210e3c885. 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/INH100907077.
Rang Rangeelo Rajasthan - Rajasthani Lokgeet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7ee42770559986ba95b3a481059691b5f40c213f5c7b05bc64e8f37e995195. 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/INT100200483.
Govind Bolo Hari Gopal Bolo and Shree Radhe Govinda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d9c426a4760501afaf58633e718cf9662829dbc70706092a597803d7211f64. 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/INS180482843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8f9fe13883298acf93016e5684d792bd573b7ec4b31f6f80df313da7cc4971. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/INS180482845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6d1e205cb18626427579cf8ac4cdb95974483218a44e6e6fad863528f8c4d9. 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/INS180482848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91a266545b5eb74c186c0312b86cb6fd996d1590533377a5c51acbc23e9928b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/INS180482850.
42 Non Stop Rajasthani Lokgeet - Rangilo Rajasthan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4049ea36363c630195ce1832f0bce3255a2aa5d6676d429a7a0e76d24fed24. 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/INV110901296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53075ce11faf5eecfcdb9d5e303e8eb110bd0f455f030e5cd9ec326b46268fd2. 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/INV110901311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9a53111ca38192acfab73735981bd0ea8c1d034b9bacd4e38ba216e0a199f9. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/INV110901284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e730a9804b17a93bc4425b68bc14f51622a933ab27d1987586e593aff8c7f5. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/INV110901289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa44a35ec7cd0a8734284beb891053af268d979cc39a68feb37c2f3d46bf0d31. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/INV110901302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eb84f8b616e5a442b7ad0f28cf020decf8b6c83ae30b4c72e5734d72d35e40. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/INV110901306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0b8f37a693c5f542780eebf92feae5ec446886df072f844f12eae41473a7e4. 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/INH101003500.