1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x011bede90f5af22fa1b81f89a1f2c43d43cf15669ae3897ad909d507226c8fb5. 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/47c83fff-8ceb-4b69-94b0-ef2e82bf884e.json and https://artists.proofprofile.net/proofs/artist/47c83fff-8ceb-4b69-94b0-ef2e82bf884e.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 → block OTSBitcoinBlock must exist at that height 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 0xaa32a4a2fbb3851e832ffc6bf2aa70f8bd049a1a13e372cc9a947cb01f0c876c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAGD2217290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c30a999c8ab226654a80960e2f2aeb4429c39808e819da72de5c11c30d5209. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:49Z), 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/TCAGD2282651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3d0e0e06ba4f96f1e191c0fd81cf6019da47c13a6717e9ab515b2b0cab6409. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAGE2202926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560c7cc1ae2ccb2904d1b4c841c62975c12bc8d425b3c13d1666519e7b4711e7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAGE2250053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac12a8b7e6f93d1258f61e42440be7969684d1f1b29c8c4d34f8de1fc31d40c. 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/TCAGE2298315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec358c982fe271c1de6192796e6e5bda9d9f427b7d66a1d39ba5ba248de5342b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCAGF2236296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c564883ef689028245c0cb9c086deb5891068a61d1a0303ef0251a16b84cf1d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGW2390069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6404e709b8eb707cc92ce48a49e1b9d2c4da239a808aeb2dda0f4b231ee9d0. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAGW2390073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff8f98cf1d7352de015ae91b3b5b4d20896d551e416db2b9817a95b0a8491d. 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/TCAGW2390121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ea9f94f634be2b48e312cb4bf876f42b321c77c8397bcfcd63aa12babc398b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:38Z), 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/TCAHB2387486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553a12edf5b5a2d4d47f09ef54729ddccf7a1cfe2afa7847e2c4106919208b59. 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/TCAIJ2470503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b7b73f486a926cb222d80bf1e826450d328ec702207fc580cdd3e23a4af848. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAIJ2470527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a9c469dd35d73990ebe76f5c5761d51609d66c619f122625a1ecf3afff3583. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIK2470611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf4f36a14f34a0c8f13ac68e5e481e1cbb469179bb796382beebe331069561a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJH2582323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29909bee1cfbe7eecd53dd4080ecdc8b5aafd63603af08fb724516fee38665cc. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNJY2501657.