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 0xabd7f88b740cbfab4286d4579bebf12e0542a124f6349f0fd91b79a434171c67. 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/e132f740-685b-4545-af9b-b38e8a9de890.json and https://artists.proofprofile.net/proofs/artist/e132f740-685b-4545-af9b-b38e8a9de890.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 0x904b421b777899b0c83fbd22acf7bab38fcdb7abe992c0ba4faa09b69c7fe7b1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:49Z), 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/IL5849201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268d8128c37657dde915cc0c65b8b2fdb3538d17d1f27f264665c4021fa3a9f0. 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/IL5849201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0209982e71845af571ef8e1ccfa837638dcf16a183cc16c30e63de2551a27c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:11:04Z), 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/IL5849201225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9224a59ad8b0a583ce9e7ea374ffc1e0d99fbe1d6198cd41ea4430ac7f6974. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:35:49Z), 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/IL5849201222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf5be8dc57c258f51f461032c913cb09e32234fb90be3fb5fbac189382848c7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/IL5849201219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a8eaacc11be1fe0329add059c740509c48c23289f735542b03460384971a17. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/IL5849201223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426e65abc62b53b46a1bbbe574b34bccb96e8550ab36aa846717e9a9b4b20479. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:40:28Z), 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/IL5849201227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3697b837419aa31ea468cf2907f358eb7fcd031c5a6f489d714ce2fd2ad8f05. 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/IL5849201217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075f0706b2ed394c80c6f2c1153e374d5abfb3a014ea8572a5bdcfb825ea3447. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/IL5849507945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd0098a224c7056869bdf11c1f7c1aec8d2ba5a7d509b03b01ec7de077f299b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFYW2132489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d4c19298d385dea2705194656ecebbdbb6adddc392f3a638097edbe50530e0. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:04Z), 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/QZPLR2037180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d86e06401a8239a939d6cc179157e5d570005e5485368e41cbcf230b8d05a89. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZPLR2037184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03af9d8e8156d97b002e0ee311d5ff8a809f2684d50a8fa37047b4039216c4a2. 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/QZPLR2037193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e3bfbad784a0f014edc39652c87c708fca10ee77a0481d8725b156f9ff0341. 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/IL5840304958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393e968dd328d628558d9fa7b28e1b17710c355c550723c8723faedc17cfcac5. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:01:50Z), 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/QZNWX2073182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8168135c6cd9cb916ed54df0f1d5eb0b3f91ea2725b75d636abddfb7c7dc43c5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNWY2065920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46286e43e0b607d31f38d26db7cca01d29c23fa21462352311d285c81dc64ec4. 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/QZNWY2065924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dfad4b99a40428d9c398dcf1fe2118c397e26ec6277bb9983d36444a084bb8. 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/IL5011500179.