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 0xe780ed1fdc527da27ecb2ab7ec4a57bdceb66234a112dc0b0f56a1b9a17c85f0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0290242-0144-4b5e-a95e-f1ea63630959.json and https://artists.proofprofile.net/proofs/artist/f0290242-0144-4b5e-a95e-f1ea63630959.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 0x3c27b85b19b12f7bd4e79155a64bcadf33ef24b30063d862dcacf1f9cb4156c6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPEW2582915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd4874f1b0e894ffae5f789a10f6e19e8a3aa096466518674270ecf28ba93bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPEW2582916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b2b36ec0ff70e5cfff5116406a63dfff6d66e6e4a86fb4c32bb88c4ae33d17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPEW2582917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95c26e81711383ed7923740e1fa6b774282fc87bc6a78f6c18927ec5395e02a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPEW2582918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd84f92f1467ea5e87f99e03502a142fb447ffa746b0a4744e69e73b13c7a192. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPEW2582919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd8cebeef0da3d5f53f1609a00bd8a7e25b8d1ce90b842371b2e0c4eff2e143. 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/UKZGC2504195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc77a32d9681fbce12195d0d63f0e3287d4a3fa5d839eb3e29928c4f6c6fb77. 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/UKZGC2504199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b154a5ef380151689b54ea6c9a9431dfcdee02b88dd1e6ce168a81c1467defc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKZGC2504192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6956036e9ae82b94a561060bd3863e39fd4cde8f6a37b620a5aab36644154c4e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZGC2504193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad79d6ce53ef19a10659dd6ccc88aea14e0476f93bb90f94360390d8cc251482. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKZGC2504194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd8cebeef0da3d5f53f1609a00bd8a7e25b8d1ce90b842371b2e0c4eff2e143. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKZGC2504195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48dc6d2dbb1724526117fa21d46d2f47ce70acd4f419afc264901f43c805b2c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKZGC2504196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717a6108cd79d0d6b44ff682415224f1cbf6e37fb32c0d55562c7cbf1891f54e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKZGC2504197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc77a32d9681fbce12195d0d63f0e3287d4a3fa5d839eb3e29928c4f6c6fb77. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/UKZGC2504199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521e75f171fbb86a9d8f51d3729d793431bfe582cb0d60fca517469c89ee1455. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKZGC2504198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48dc6d2dbb1724526117fa21d46d2f47ce70acd4f419afc264901f43c805b2c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKZGC2504196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717a6108cd79d0d6b44ff682415224f1cbf6e37fb32c0d55562c7cbf1891f54e. 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/UKZGC2504197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616db62ee50ddb08fa8b6c157cb4f7dc971db2b61efd4d7d5a95e26e62858693. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FXQ892500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89e39f584f5de1c647f6145204c9020f5e805850ebe989d5f6b55f4f81c1f72. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:08:31Z), 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/FXQ892500258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fed750620cf716e8ed730b1490742b7a3590079193b06bb7c1f0f16be61362. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/FXQ892500257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa32e7fff55385bcb435a9c27cf690105295d8b4ffe4b64b76ef09506ade86e. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:05:54Z), 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/FXQ892500256.