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 0xc3ad03c0c5261b1cb5e22e7c9a3e509d732fae47053168fe5443c17878cf45cb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). 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
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 958388 (2026-07-17T09:14:21Z), 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 0x7d6d14d0157c309132370c1a4440f427767589b3fea0c0ad7b75aec6d3141bca. 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/QZ8LD1976060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5b0ef0b237481dc50ad7dec5fd254ea36fa10863a4f23325765e03a176ea56. 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/QZ8LD1976062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f90b7a64d96464697c651330193cc3235d4bb627665aae4f101754d7f566e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZ8LD1976057.
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 0x93d97e98e3f47b3aed9dbe605de56449ce5c7fded996875ea2b913ead73b599f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ8LD1976058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97ef8c40d1e60d8cd89b97c962db4ec3d560c160a1f675cd8864a59a1c92515. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZ8LD1976059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01b3384d0e9b0d4626d792f2df8837cfa56733aea5a7bb863eecd0af2c52f30. 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/QZ8LD1976061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0ff03cc559aff52e06dd5a3c727427197a7797e61860ff1f8bfd4c9cea3ea5. 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/QZ8LD1976063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8d3da3ee5a53479134e324cbdbc0a3d0ab866b7cbc873385cf49799c550970. 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/QZFYY1907273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792a4d727c5d482359f1743a1a0cfe7eb733c8a6238be6cb689e217a566d0b1b. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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 958054 (2026-07-14T19:33:24Z), 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 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/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 956639 (2026-07-04T11:19:20Z), 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/QZTB42475456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e58a3a7f40ac8e34d7d5c21dae93b1d293cc544c26eb5e2a79295879d9e008c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/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 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/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 958543 (2026-07-18T11:58:44Z), 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 958448 (2026-07-17T19:49:21Z), 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 958544 (2026-07-18T12:14:37Z), 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/QZPJ32438103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382e4d6920945852e07766b0cb1ce1fc26e3369375b1e70f28677e66426deff4. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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 0x14602c246e84a28c43cf4e48a65c0b330c7ebbd2fdaede32beac79ba117b9acf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:04:27Z), 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/QZTB92341194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb270314fb8f31e77adfec77ec3c3de451444ecbc501690e171f92a7f4d43fd. 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/QZDA81845760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd710cf87b2b22330191aebd876528f89592d90b4bf616ad3dd71739427cd962f. 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/QZDA81845763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9057b64180b64b7323ccc890573e99d882b61f01e596e07f7d4714250320c019. 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/QZDA81845764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca053569aefd744f663ff5a3ff42682bb8d89100bb311f382f6604df8554d60. 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/QZDA81845761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0309bb2bbc9b6f8fd41a33f76dd2e16493370f822d80598181922d7f6e6c48a7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDA81845762.