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 0x3050026e3d56b708314018090317b93f2510d436065dba95e5e32d17e93e6c09. 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/2908c146-e65c-4cd4-8be1-016c723bfad2.json and https://artists.proofprofile.net/proofs/artist/2908c146-e65c-4cd4-8be1-016c723bfad2.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 0xc57e7a87c3c159c40fc69b169dc3412ae2032d4fa3258df777dc9bb6ff418ffd. 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/AUKDT2300763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1175b0bee6b600c69eea658cd7c114a750cae1593e3862b884c6bbc488f99a. 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/AUKDT2300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e68050b663be47abd80d7a9656e1db4c149a1f386be15ee6b9a3d228fa01ea. 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/AUKDT2400586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87cd48aba16c48026af99a7c440720111332393559631a7701385572c3bcdc3. 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/AUKDT2400587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8551673cfedbf6c7a8b6f029e1ba7f3b933694623cd098b301c9bdee85b242bf. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/AUKDT2400669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd9cf81b3dca72184e8c476f9e6e848da9c16075105a559af052c6f830dbe11. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T11:59:16Z), 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/AUKDT2400700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff98de8c020ab70f3c874b777cb076bedef447893a6974832473c6bf834e723. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/AUKDT2400831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f8b21f0bff9525a59f6817aeddc1377bf74221e6acd76371c99cc48e198b89. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AUKDT2400905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45afcff815d48b4627d143e361fe4bdab2d4de8d8a3329059e0052624eb332dc. 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/AUKDT2401181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9724152a8b59fca54e9899c4313f439255b6e3c2f5b59045aaa458b89e2f19b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUKDT2401209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f8b21f0bff9525a59f6817aeddc1377bf74221e6acd76371c99cc48e198b89. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:18Z), 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/AUKDT2400905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251a0f229eaa782613b8265321edf183c2641123af88af8770f92aa31ddd54df. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/AUKDT2401247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666fb426131a31334fd3a99fb9c288702638e9472fb477637266dd4923ffaa38. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:18Z), 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/AUKDT2401248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7465fff300332f888d9f7be8e585d741a6eb9212973c3c20083377796269d734. 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/AUKDT2401249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff98de8c020ab70f3c874b777cb076bedef447893a6974832473c6bf834e723. 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/AUKDT2400831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7d4901784315f63d941d8e047c85c8c3f0ef30cb73b6b191d7aeb5c884e173. 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/AUKDT2401251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45afcff815d48b4627d143e361fe4bdab2d4de8d8a3329059e0052624eb332dc. 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/AUKDT2401181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c8c30cde713fcf1db2099aba7cd2b7324de4ab804a0a9d0ea0cd83b93ebdc4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUKDT2401252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd9cf81b3dca72184e8c476f9e6e848da9c16075105a559af052c6f830dbe11. 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/AUKDT2400700.