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 0x968954c64a89432411e7c0c4352b7c5e1e36bd8ce03e3987800add2bb206273a. 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/413cd640-3944-42f5-a2f6-4c4fcd36a819.json and https://artists.proofprofile.net/proofs/artist/413cd640-3944-42f5-a2f6-4c4fcd36a819.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My God Is a Rock: Hymns & Spirituals (Live)
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 0x1b3d802a1d057797f14a8823f46236119d2fc4b5ff7b4e3dea333ecb3542356e. 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/QMRB31300029.
Jesus, Once of Humble Birth (Arr. C. Downard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ad8cc6555f1654f6fb0a8aa448a713a11de05bc68f5dc6dc07b6b37fafa9bb. 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/QMRB31300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a9539cb06cef91ef90d6209f712a085429015e46ba3d9bbc1b2e5687e502c. 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/QMRB31300034.
Jesus, Lover of My Soul (Arr. J. Applonie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b7279b098848199927607f75eb71b6f20b0f2d61f318838bd4b6c97ec76bc6. 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/QMRB31300036.
Ain't No Grave Can Hold My Body Down (Arr. P. Caldwell & S. Ivory)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adcd3089794cfba98413c52a051f3c5d84f97562fb7be1fe543641a39d72ceb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QMRB31300040.
My Shepherd Will Supply My Need (Arr. M. Wilberg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601f4f65bff90214598dbdbe579c510f5d013193de0806be77d09eb51f3131ef. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QMRB31300028.
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 0x5b81a51b3a9e453b6bc8a5f27dd798d662a3c5c3bd4ad9fe306edbee26d5e8a7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QMRB31300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe491cfcccb9f815af2f184475e1403dc04826d23c7053d0e05ab288e8794005b. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QMRB31300035.
Poor Wayfaring Stranger (Arr. J. Rodgers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff2f5ce85d9672412737f718c67854d29a256529cec331d1efc2490b26aa2c4. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QMRB31300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa4792ea6b864bb4c349b8a73d5054d06d34a7356466800a2cf7def96b2a1d8. 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/QMRB31300038.
Hallelujah (Arr. J.S. Applonie for Choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea3191c03fa939361bf62a49843b90c9a59a7e4b729861076897c75e4aaba05. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USRUF1010393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0b0f15d222260c26f53e27b15fb87f66323a2b641e266160389d133414af0f. 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/QMRB31600055.
When Johnny Comes Marching Home / Keep the Home Fires Burning (Arr. D. Zabriskie for Choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9730b080259a2e15e01a8b4ee0b1081aac65fbee977070582f2cc7bb6f214e2. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USRUF1010395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188343fa64019ca8db93aad41219341fd05ff8b7b2068a2ea92c1cf140bb0937. 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/USRUF1010390.