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 0x97398e4e4b1fc20ac10940fff9ac8f90d6eb755cc2a75ce3b390483351b1c3e7. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d697ba7-b3d3-4768-9530-67027468e6ac.json and https://artists.proofprofile.net/proofs/artist/7d697ba7-b3d3-4768-9530-67027468e6ac.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4769eeea2ec911fb2165e2e39a3b8172f6c3b6e300b333b433aa5337149baa0. 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/AUDCB1701411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230f1bcf8e63752b63c441c066706bbe48a319a8afef2fddf3fd0fc7a3fad932. 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/AUDCB1701413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0991f32a156ae3ef0ee05a1334b5f438a8467ff7bfc240f4c5026eabe3cd7a5. 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/AUDCB1701238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322fefc28b372034d500d23961fe2fcd12229892cf8691f61aec5c9944bec08f. 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/AUDCB1701236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd512db658af53620c9a0b5cbf7fdc296f7ca3a9d5c2a9bc2e448a89d839d1858. 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/AUDCB1701237.
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 0x85cacf4591dc1d46ad1d9bf0a9da47c6d1ae274655cd798850d6e42014ea3807. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUNV02100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34359eab7c6ede7df6d32d805f3e973c64c1f4576cb43eeb5b66a89388db5b4a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUNV02100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9035abf7decfc6f7babc578d572bd8113cd86c26487d98beb1ac910507ab5d9c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUNV02100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d1ca72d9b231ec73e4c5ab91b98e9e3f1819662f8a81282b42d90a5282f8ea. 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/AUNV02100125.
Dance the Night Away (Holmes John Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5972134e51d791606e4a7210f7d987126f183dd1a5b4d0b784f0a618d85849a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AUXN22386993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e20c23e0dbd93821a5b847ab58c5a82230ed84ec852a9fa07ccb9db5783677f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRX762368752.
If You Want Me to Stay (Holmes John Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc294528c286404b067a42ee70d457b875f88513a2ce5cdd2875377a8806328ae. 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/AUXN22286272.
Power (In Your Soul) [Holmes John Remix]
Walking Down the Street (Holmes John Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d2cd72c04e578e8797cf000aae2bf16ac04b7f7b9c65afb703aeecdd9d64d1. 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/GBSCL1945021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78362901920f12478501b0ad838e31ca77e037d2eb01444d97a9a5cf53d92569. 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/AUXN22263712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b9f1fc47f2475b9fa168ddd650e8dbdc88fc217e7d98c924526566f305571a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUXN22263713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec75509a934ecbbd542d772b639f93b5a39b2daf8ed2a875c3db67e5512356f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AUXN22263711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13d5871ba1df57eb1874d488ef22d8da052238751866eb976fa632bb42bca5c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUXN21804817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598aca45fabd610241d6d0d2a3b4db3f6d8c352bfa53d8c40b29cf568746b126. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUXN21804818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba7665f2fbddb145e5bb346e5d6541e3d1f551b7a2fc32b125a15bb9529ebbf. 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/AUXN21804819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1678da1e2133aecc7fb34172dc402c54ed3ca7e7ec47b3d4f54ca7be62244511. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUVR21618901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8cccdf284e21b77c7d71ca568a365cd7bbf8c4492ac5a182bbd078a1d5977f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL1976657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a60a8304c3220417e9ec05145529e8761cca60a34fffe8ece7d14744a237907. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX201848201.
Trapped in the Music - Holmes John Techy Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf689b4df722a3944c5a8114e1179fa0aafd1e1847de6e25ae57513e83a4b22. 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/AUXN21739794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0862dc4b52e400013fd0ca7715f09c5e53cd418881e7f27a845a040fa25b16dd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/AUBM02000491.