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 0x8d9c7cf8e9966dbf3548c414ec4cda266314c1f5860d2e36be2c2f804300f3aa. 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/ed023093-de49-4cc2-af13-a2f5a450ecc4.json and https://artists.proofprofile.net/proofs/artist/ed023093-de49-4cc2-af13-a2f5a450ecc4.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 0x81fdd812780d6a568debcf764a3724737ce2736427c327e3552f060aec0a0a59. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZES51988395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8686890c5a3424137ed2bccc1de848b1aca0a8484adf60cf919778cad934247f. 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/QZES51986215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5094d29cb198bf82e8aa240848d5cb3f1d8712b875f87e5e5c31904387efdbde. 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/QZES51986214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8686890c5a3424137ed2bccc1de848b1aca0a8484adf60cf919778cad934247f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:45Z), 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/QZES51986215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae90b2fb0c4210867d699412f177098681049b0daeb8dfa67059d5c120b6c6e. 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/QZES51986218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4801a231f56e2b0c358ac51e8da442e94b27941acdbdf85aed067d09ad6f6dc4. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZES51987293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3248b8830de1dea1495f0e429d9e2b9411961d54a75df42a0d5a81bf352883a0. 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/QZDA81810666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290ff1c6e07a36be36e9b667a1138b791ceb35aef3ea958b534b47f278ccbad5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES51991432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb56a41240d6072d8fb8427028e3e27fd9169a7d3fa3c39d6c054e5d209fab9d. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZES51995353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0426ed2029e12b17699db086fce845068831220a9c971eaaaf11db06954be5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES51991430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a4371c29c7c83dc341138ead312fb330ff302f76c489cfc14c02cf3f8e3b1e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:09:37Z), 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/QZES51987269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64f932fcfe6c0dcf2db49b180f2d0ec812b0e416b4ecbbf12977d6074228079. 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/QZES51987273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075a24d631fe901d8fdb4289ca79b6a1972b52fd97b233dc9e323eef0de8eaf2. 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/QZES51987278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e5947c3fcc34b765223c4e5f4e2244044e1275ec0dc121704d03d1ce0b97f3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDA81810668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b837eb568f17cbc1e68bb48456bf23d9947a2d786301565e9aea994226130f1. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZES51991431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda86bbe66233faee8819d17067d334b1172fd1b8757c3610c056dd2a129e33c8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZES51987292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d4233c99198361c42bdd93e0f811b3d8e5d350cc8b39894796e888eb1bfe06. 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/QZDA71895281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe035793c97b10b71e0a6b7654ffcddccb9e2955f691743ac005537b5873c59ae. 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/QZES91874848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11e4dc545fe9f30aa4c7d81ed490ac773465c6df1515323e933914080c4b423. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TRCAZ2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f50727c5d6cd71fdbf1af2b77ba0f4c0f9546e04770bcf8fe225dc236927720. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX452306631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b937b036ff2f450dc7423412df40a330122bd39520dd5771ef7f6f90c12709b. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/FRX872460656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b1755a65f0e35c4fbe917081406c078b731f8a76731601ad3b5b49265cee8e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DGA0H2484966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef572067e3dd900e415712baa89f90570fa9145d049f528752203cc206201b1. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/DGA0R2410216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600d8ccd3e5eff0d374008b0aeb4ef99c3d47d098067bb36aff0e08bc3ad675e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282521045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed27b566f9591a52407be5f367b5a854ffd37efda5707ecbeeebe6df3665b653. 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/FRX282588260.