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 0x0c594a7ee8925ef67d96c701fc48aaeab997a796dff8e7ff0961fd0d42c9d203. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f31a0eb-5750-4937-9212-5e65d17156e0.json and https://artists.proofprofile.net/proofs/artist/3f31a0eb-5750-4937-9212-5e65d17156e0.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 0x3a4d61790b50f311d927fb37762e73c5b9875ce80a55f014537afae819041e87. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US2T31201939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd59a954e7c55e56c7db67fbc5607fcb1c9b5f6723430fcc45bed72dd2dfa900. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/US2T31201941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ccc7ed0231d5dbb598eb2d6dfcf512c1619180e43826beee32079912044f93. 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/GBBTM0453112.
25 Top Vineyard Worship Songs: The River Is Here (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21581e3798f84ca8f19ffb4be9a63c6f42b4e92a5c98da6186a769de89a1d87b. 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/US2T30400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d91ab446ba4ffd77c1e6e7cc3529f3da9014503811418bbd5c63cf7044e744. 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/US2T30400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb3600cb2dfbbd8869c3d59292d1d3aa5a9d30fc7e59863df5320202e2cfef6. 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/QMPAR1800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4052939b20044e9f656fbc6ae15dd271eb782004de50dd2f037ec4477fe1ca. 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/QMPAR1800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee328a01d9e69ece38208e34e4a3004757fa51b3d64fadb0179c0359c85c4f90. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QMPAR1800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf83d3771946ef3792cc3c3cc4d96562606f9bd7b52450d2bfd3b1fe7b8c7ef. 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/QMPAR1800133.
Winds of Worship: Come Now Is the Time (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5eeed3c95159f715bfa720576fb4d61121bc3960958159a65e9b57b5938394. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/US2T31001406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557563aa65c88557790a1b0ea6bcfa8dc5feca5c3ad430ce5ae019994cf859bc. 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/US2T30400349.