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 0xc3ad03c0c5261b1cb5e22e7c9a3e509d732fae47053168fe5443c17878cf45cb. 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/6e0cd5e2-5a8d-4ae1-a4d5-c021818dbec9.json and https://artists.proofprofile.net/proofs/artist/6e0cd5e2-5a8d-4ae1-a4d5-c021818dbec9.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 0x6bae657315bb9456fe7da921ce1d69368afe686d8124c07fe430e29d283ea8d2. 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/QZCE61820531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf273543e9fbcde679251901da3f79f70d708f0e11cad4cc2b429036dba8c05. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UST8K1876787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe083da2627e12e8682b2036d64c085fdc08b36e7980040d668bff30263e5aae8. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:38:27Z), 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/QZFYY1907272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8d3da3ee5a53479134e324cbdbc0a3d0ab866b7cbc873385cf49799c550970. 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/QZFYY1907273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792a4d727c5d482359f1743a1a0cfe7eb733c8a6238be6cb689e217a566d0b1b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFZ61967790.
Dundunder Mifflin: Straight Outta Scranton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091c7e5320112db35add79b34f1ac458de8290bc7364dd704278f9a9d6090941. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZFZ42004782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a96174d087b1b568f51ff9f65a7b6633745038d233efbe97bb38e48bdc2de0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM6N22266004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0e92fd68b10c2e863ff4e5c718823fe2a808f78a28466e9f45e006a3ed71ad. 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/QZTB52325291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a578b382c502d734728ac62b89d76177b705f6244c8c7a3e7c06a4139bfdd7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHNC2403660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c103df114a70eeb726402c565a222464ce07322b8726d9f86f1cc006107f1b. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZK6Q2428661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e58a3a7f40ac8e34d7d5c21dae93b1d293cc544c26eb5e2a79295879d9e008c. 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/QZTB42475456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e58a3a7f40ac8e34d7d5c21dae93b1d293cc544c26eb5e2a79295879d9e008c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTB42475456.
Making Tv Shows Heavier Than Your Band Ep.2 Sponge Bob
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b029fd722096c6ffd70023792ef52414e38aac233c41aa7949782b5c5c1eb1. 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/QZWFU2470970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91856355ad1aff0cdd04b9a2f58ba4d5ebf6a183c3c420f556aedb4c578e6d7. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:49:11Z), 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/QZWFU2469459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382e4d6920945852e07766b0cb1ce1fc26e3369375b1e70f28677e66426deff4. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZPJ32429109.
Blood Spattered Brain Matter (Remaster 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0682de1a9f0cd2a5de9b379ced1305877a2d4905b1beab8eaf7840a248945ed. 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/QZPJ32436190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eb86a8e45ee805ea07af0bb7867bfce4b409f89f61f8868d22267482f50dcc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZPJ32438103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf81332a13d11596aed7d523813199a8e73df7396542ac904216aa4891ec66f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZDA62529947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c94a8fa74a2b6e23f8bf3f1531c4f4e7e2a4c7ba9c6127d5aa90f086e8bd48e. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZPJ32465523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eb86a8e45ee805ea07af0bb7867bfce4b409f89f61f8868d22267482f50dcc. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZPJ32438103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382e4d6920945852e07766b0cb1ce1fc26e3369375b1e70f28677e66426deff4. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZPJ32429109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb240bbabadc8b3c5ffc4a22333dfdbfb4be3f9e54d6f9e25851aab74390d6760. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:37:17Z), 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/QZPJ32450347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14602c246e84a28c43cf4e48a65c0b330c7ebbd2fdaede32beac79ba117b9acf. 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/QZTB92341194.