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 0xcaa0284a2d22c8fe2210811c69761fcd319f84b0e13c45185210f88ae9c25d70. 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/6c441333-660a-4c28-af12-9f994c0fd466.json and https://artists.proofprofile.net/proofs/artist/6c441333-660a-4c28-af12-9f994c0fd466.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 0x419bacbdd45915bb26df4271f95f86611877af433ad6a09cf8cf297112656f71. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USWR60701417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9affce18b269338835ac1243abf5adac6628b7858998a00528dbba497ae002e2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USWR60701424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff99dba54b4153dce636df6a29a2517553a82d822b931a35361b1cce828581e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USWR60701425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1739995f178f5b589f1054f8a3e5a1421fa8451149dde6ca9425c093f6b76f18. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USWR60500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f97ebf6c316e40263758070c8a51109811e5886f9f7635de07ee2b6fd4e8d7a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USWR60500166.
Rev. Milton Brunson Presents Tyrone Block And The Christ Tabernacle Combined Choirs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc34d0bec01e4aab3a63da73afcf53c29ac09bb0047c96236495698769010f4b. 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/USWR60701448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143c5dfa17fcbbd9e26207c5cf72d0f3634c5dd31d2d9cdc6d8df7429ffc6b30. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USWR60701428.
Great Gospel Moments: Rev. Milton Brunson & the Thompson Community Singers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cae76c37c9629cf03df383e7cc41a9eb50bd8744848df8c516cf2e0869f85c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USWR60251412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a61fd66f784efddcf63b9c2eed1640d755124e08e0be9ee4886c2ab04ad009. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USWR60251420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8e3c3b94dfa3fbe7e5931eca33f17289b6da92b39cc58f59a28e18cc0ffabc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USWR60251415.
Rev. Milton Brunson's Thompson Community Singers: Greatest Hits, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139d46728b60506e612d4f212b345390f0057413357823af74352feb23a14a5a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USWR60802021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43031325b7e2ab22a3cd8aa99a3af02bb17ebf46903e7d1ee3e9cd9beea897f6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USWR60802022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee262ef623f355c97e0d5a5477a4a482023dbb593c51bd8099da8d135636258. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USWR61101145.