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 0xda24798fdc314b9aeff2f309719dcfbf418ac82ac3b0de088dede21153396585. 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/50e2440d-e710-468d-aff8-8b705f4bcd63.json and https://artists.proofprofile.net/proofs/artist/50e2440d-e710-468d-aff8-8b705f4bcd63.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 0x389536337bd8ce131aa77bfd38ce52aef264e454a3b35db67d13cdf199405f16. 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/DGA072384554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d434c0408392913f32dc08b263756973f0549267ae144472c84a1fc5e36fbf. 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/SE5BU2488616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8ee3586d1ffa1424db516f159f8541fa83e088c978264a8ada5891976f2da3. 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/GBLPF6790102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f36d5dc74fb494b7d12a1bbd184df0fd69f21293d9af3c636406ebd18b61aa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX452420120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66474893416a3a85099da6b990fcb10ed9c7c5e44d4ec4131d3e5e1ade8f08d6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DGA072461867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579468cf64193fadc1eeeb6286f35688359a2c80a0d407c29261f445f9956447. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/IDC012400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cd78f5163f60cd4cabf732340fe254a5cf56eeda911ca6f5480c94b6fd7b5a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:10:09Z), 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/IDB772106826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ed0c439ad4a978e9ee8eac489d3651e076ce348f0f7757a2ad00fa64adb315. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/IDC302114116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa321dddc20f791d7a9e4c51e86942f9a9fbfce30e73546d642bff7d0315ecb35. 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/IDC012400681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50bd69e647c2947f5f8927a8e828831adb944580c95fd4ba3581ef67f2ad4f5. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/IDC012400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a598ec567331da55ea5357316c741ed981dec8d29e277760d2fca64773d23b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/IDC012400930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f7cc615bc7bd973474123b3236a3de8de93fd3476653f8dc045c6eb545f8fc. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:29Z), 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/IDC012400935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f637bc715002e3e4f10ac38f78b5068d9d8ec5df9ddcf1f98e7312bfcacf7a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IDC012401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9742b23a466b46fdb300ad777b70e123c53bb524519b71ee0d63e53655c5e5c. 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/IDC012401033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73cc0b644378167c6a4f77eda4353d9cd1c36d3faaf2ae961bce590d2aa10b2. 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/IDC012401032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13acebb9e7db6725582b66675e15aa5df7ff9a7cf11f30913a0462667c45a6fc. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:36:46Z), 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/IDC012401074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d21ecfd6f16c955760dc9f331ea4eb0a2c7e1b675dbe9f41072948156c14b1. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/IDC012401075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92d7d6df2404ab47798c49e19f75ce48fef51f80baf14038e2972b018f5325a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/IDC012501290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbbd940ab0efb9779ee6c30124e82331f5806642c4a61b5224109af635498f1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IDC012501360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1d82697b395d8490aa1d058a5f448a780699c102f858943135a2438cbf9606. 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/CH6542556980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a3a8789e969fa4eb1fe15cef891f69cbe2fb658b5bc4dd6fb2772dd345c187. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CH6542576386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8866e19671ad9fae361fd865edd56896068eb2b80b79b964c09fc0e6ca10c96. 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/QT6622594120.