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 0xfa1418aec80441ec680a50ec0f72bc77ed72e3da68dc7e96449ccb10959cbb69. 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/feea69e5-b0f0-4bb0-9797-896fbcde3fa7.json and https://artists.proofprofile.net/proofs/artist/feea69e5-b0f0-4bb0-9797-896fbcde3fa7.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 0x42e403bee8aa64a23effa76cae7a5672b7303e36f9a143b4d891ce44f9360a0d. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:11:43Z), 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/GBSMU6012998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06110bc95868e9413a9aac56cde3e6b6203852e7512564c3bfe712a0fc3db88a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:51:45Z), 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/GBSMU7225438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae2ac00270c3680d9d97210ad104be81fe6ac60f6883c6a3f0700cf6b066155. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GBSMU7225442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de1b9a99c6035282a4d68331e0f34c30a7e034746880ab61f6d0e822c4dc30f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBSMU7225467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d47e1b4534ad79bc2cd3e313f500efbabc39b952de2e0662c94fbe43220a9a3. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:30:26Z), 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/GBSMU7225444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32aa77f7ba1be4eaf3043ca79b98941958eb18e0d14f633a80bbb7ffb86f060a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBSMU7225446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2505238ec3861a6414606d8d950e0cd7ee43423bbd920eb947ab249f7a9a7f23. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBSMU7225448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5ca285f0b62b479d5a37f505104d128d0be58681a56675351b4b2b59900da2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBSMU7224820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1d1525507b1adb43b9002af4308a3d23cd3d6a0a8df094570399cbee8357bc. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBSMU7224824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb369b9bb1942caa6d6d81e29a5a7c9c34c14aafcd73f93f41810f7b9990ea839. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:59:14Z), 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/GBSMU7224830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7fabcdb23530199c1d3039ef46fdb268afb370b42ebc659e6fb9712af59fc3. 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/GBSMU7224838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3e6da7dd1a5329f851d9819bcb95e77cc9b174fe14494f255edbccf3048401. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:50:38Z), 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/GBSMU7224841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcac8c6df4ab8a41f0859671707beb3fbc221631dab7d08adc28b8cfb8396a9. 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/GBSMU7224844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3a4a0f6e21c584c9ea7ab5f1d41fdddf543edff48d585515e61bc61fdaa0bd. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/GBSMU7224846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe10c8454c7c93e6f99829180b42ef9b0bb5ae261d407f1d455d8e96d6c962e. 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/GBSMU7224849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e81d14d19d5f051db13e9457338fb6f50dba96d4a5e61ee4ee5b2af783c84f9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ZB8YA2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c46b29fcc27a9332adfa8e70b2d417d51adaaca1213b1b5ddedf13447c8dc1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ZB8YA2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d40da40c19fa303ca27422f31f0a519bce9293455469aa4bc2445dd3f584082. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ZB8YA2400030.