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 0xb6b86cacd8e4dc500beb5dc8404cfc5e3e9d929f90d170b4354d2ba647d91b02. 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/f36257d5-b0b3-43b3-9212-227b7babfa80.json and https://artists.proofprofile.net/proofs/artist/f36257d5-b0b3-43b3-9212-227b7babfa80.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 0x4ff7c6525a59b978cff0c23ba2350f802c946c0fb9744fa8ca3b00cb028fdda7. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:50:55Z), 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/FR96X1922320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5686905ca9b988da1436b7c67e86e28246dc2d56fd3b13c11e9dd840c93d86. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR59R2018116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24f742581999b297e91d2e50ea9bea1ad4afa63b516a84e4c50d2dd15e87dd0. 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/FR2X42202143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b5b5fb9d660039315e01f15820300ef5b5fcd446540739d2005cff4028f075. 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/FR2X42251136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774073a635bcae3326194843ab43ea8b8854bc19a4dc22c29b11f38ace1f37ea. 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/FRX202266898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fae4637b7f010f760869f8e366f62e673d2efc90ba6e8025472100f669bd4e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:30:43Z), 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/FR2X42316638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124743ea29492a49c5f31c11410cb082cfc2bdbe867f4e0744a13f42459c9caa. 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/FRX282317750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285f6f9eefba8816488275ef0a924a1ac89b1545cfdfbe782472b91766e37580. 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/FRX282317751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a84a68e0a57c9ad4c75a3562a39dded0881545dab2a71cfe47557a83f0509e2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DGA0P2314462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114f1db6857bc4bbd41d80fb971a8e864f9e7bd623a7dd881c38b19e0e4cf70c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR10S2419958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd6726e7ee16c842bea178a1ad9db48cda02605d6ab80b6f0f64770455b1bed. 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/FR10S2497563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0212c8dc9297e4aaeae650a644814b0d2e17f13d061855e775187ab2b974176b. 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/FR59R2496442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004f9a2eb066467353f8c4ade3c952d53839150cd979ce9a5ede1060a7755f67. 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/DGA0L2443311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46204d12ea49487733c05feaa7ceeca2b53eb7c0ccdbc1cb901856dfafc43429. 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/DGA0S2411074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d97631a7ba5649c0fc28711566637f8a0c09effb53479b360264aaec22293ce. 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/DGA0S2411067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35e5ca35c2aa9443012ddaaff2ae7bf03c9da40155c6919126f2edcec19dac6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:20:44Z), 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/DGA0S2411075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfdd9ab413e32bcb03d0522ae1289541dd8a6a90b0655c5d0af9f5c6af42224. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:43:48Z), 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/DGA0S2411076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75dc91ecc5bf54b7066fac27e4fe3898070afb47c80c1a017c427549313585c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:11:20Z), 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/DGA0S2411071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3978a2203601eca8d0ebcc7ebd5eba5a49edb3a8da3176e06eeb04ba449be172. 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/DGA0S2411078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fc57481212f9bac96d902bfad8f5836a0af998d6c231554199dadf61a92a9d. 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/DGA0S2411079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0913892c1a585867600b96ba7aad46b774b4dcce9cb642cd1dfbe22593a51628. 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/DGA0S2411072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345e25269c4660e1b2334c7bdf97b6fad3c202c10814250ca3a79cacea743dae. 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/DGA0S2411073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a7dd5bbef21b2380531526fbe0b1aca7355d2ee67db5fec02bda4fa061040c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA0S2411080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce517de659f76cecce44fec7129ce26f336630a1db7650ab0134534b54fb6566. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/DGA0S2411081.