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 0x6bdf48ad028644ec05e02aadf11169c1719fc06a7c31fee129e9bcd0f700d9f1. 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/40c33497-cf45-46d4-a392-d1251cbe07e5.json and https://artists.proofprofile.net/proofs/artist/40c33497-cf45-46d4-a392-d1251cbe07e5.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 0x01deaa9fa21cd3de16ed38fdc9a11f87dbb3cff2fc83bc3b90c347326dd49f29. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB92263780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdedb6d0d6470ca67cd7db7be4c2ace821b6f18fe6c603cc5c69759390e5fd84. 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/QZHN62463052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc336963a3e0cd9ff0f55f08f2cf756827038ce22e0a98591eeadc653d300b238. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWS2485580.
Jarlon Gubar & K.L.I.M present - Sex is Art
The Dying Fire, I'll Collect Sticks Audiobook
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace049d23de02130faa14d6d7fe405a61120017ab0c2168f90104267880d56f5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ72509445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fbd84cd8342408721a28f43cd5c1d8baea8b0ab31444623e4ffe0ff71fcbf3. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZFZ72509446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdc3532ba9af11d36a72f3a26a43d61cd62c53b9671b66b1ca58d206f0c0fef. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZFZ72509448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8140dafacbe6c0b9ed572e7ef428791cfe804480f30949dfca47ebfb41140ddc. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZK6J2464507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8825a91f248ab4855b744e52e269f203155c282ff22cdc43be688b2c1d23c1. 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/QZFZ72509450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdedb6d0d6470ca67cd7db7be4c2ace821b6f18fe6c603cc5c69759390e5fd84. 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/QZHN62463052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ad128ddfd87196be060ced5171b564e10e62f3289cbea6d16c7d9c7d7f6f3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZFZ72509451.
My Heart is Endless and Filled with Pain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858d0f6caf707d0f3c8c2893d9a4602d5ec1695f8d46552d2561d6d513715a35. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHNB2596662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d48b99c8426fc37d226d806dfe5b9d589e4967316ffb3c93ab4c278a882ba4. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ7W2564065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609037dea06d2407c08f406611ccb5bcdae55c919ef71121422c41f0207870de. 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/QZES72405814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0d1c857fb0f32a42e4eaacb5414d2ee97771b793fab256d40518a04e562bc2. 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/QZES72405818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac9b0f6be477b28423c53c595199428eab30f82a22ab3ee6dd9dd8694d0f313. 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/QZES72405819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280916a5f9c53b6cf92128e142e938b1e8d5bf688c9d569359e64d6ed2ed518d. 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/QZMEQ2220493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a63269794f5f4ff4aac831bae7ec22f3da8d521aab1fe7dc720d547347fd21. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZRP42204539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d69b5cc020aa7d6885d8f8690f994740ca95d6af2ccbf686f90e0282e4cd24d. 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/QZRP42204540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5890292d7465b53a2855c84a9cc85ab59c8faba644759f5ab4dc4756c31a27. 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/QZRP42204542.