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 0x73053da749258fbdb52f546dd7a649111133f1efc0d25210c8b8c67d9f541b45. 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/f0d91f4f-faff-4e45-8ce2-1c68e9b10f96.json and https://artists.proofprofile.net/proofs/artist/f0d91f4f-faff-4e45-8ce2-1c68e9b10f96.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 0x735ee1c7d2f5f4d6baea2a01e95b58089966afe2be7ce6ae40c4a0b60bd83ef4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZJG52352412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31e4c94c5832e09e5e26d32fd56076283589c5b0ea6353f19f9b4318404d18c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZJG52352413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ccbaa303fe8d14071b18e6e78e605770b1425e09db5275fbff3e87fc384c90. 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/QZJG52352414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0681656336b75fc2ad05168cb2a9c14c6505103db6e563bd70cdb17d18199159. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZJG52352415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59b56c3a79a376f100a1fa6f1eca8bb296b67be0b54df9d366503246c5612ae. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZJG52352416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0501bf268529d0e4894218c90cf9a775abcb5f46e8c5475916ca58afabc213b7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZJG52352417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9696d333e46b07550a444cb509ac1f0d1c721536cc737aa8ddd7ec983551fb9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZJG52352418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf7aa0857db6ad31d31ec9cf390edb996c4bf1b1273eb856894819f2c576db8. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZJG52352419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecc9d9bea6b6787674979260151a4d28623a1a6f9f1fb7f7711802b0c7c8eea. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZJG52352420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea102836d22436f3240fbdda53d8d6eb52ce08d0a95e523e139becf73225d34. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZJG52352421.
I Know Whom I Have Believed (Psalm 34, 62)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c289181298c5907442ca179f067d95b3ec577302bebe2930f8a013caac5f16. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZFZ42344080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9442a5ff27600d0b9003aef2631bad0b471589f79e0a33029159cb421e7809. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZFZ42344081.
Wonderful Peace / Morning Has Broken (Psalm 19, 24, 29)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee97eb5bd529b631b72973cef4784253a45ec66a52c01f80633a2d4a80cc679f. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZFZ42344082.
I Love You, Lord / Father, I Adore You (Psalm 46, 51, 117)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c6d721e3b36a0d51734830ba19691e8880f1a46acf73f1eaa60a156d7b8b4b. 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/QZFZ42344083.
Savior, Like a Shepherd Lead Us (Psalm 40, 61)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf047a3ac538a4e26c9175bac7f4b0f679553a08034493c653778119dcfd16ead. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZFZ42344084.
Turn Your Eyes Upon Jesus (Psalm 32, 33)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd288e1b79e67c97dadac78eb2e652db72324d3ef01ca51e52e66555ada75186f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZFZ42344085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa9e738d74363d8f70e22cd68fa77c36df224e3b496fb9e045083d9124842f8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZFZ42344086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5399494423bc70c05a488f0498c8f3bd4d2b97b6af9d03999e9db45ebd4a46b9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFZ42344087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dcc32ec4c3c2e4409d712b0853b9043e91f263bae5f48047d173019960c0f5. 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/QZFZ42344088.
Blessed Assurance (Psalm 1, 3, 8, 15, 23)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384498e8bb8894a7bdda090b8d2331a8841106c6d98361615c9f2ae6c45fba5d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZFZ42344089.