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 0x375811e30cef6ed33af6294849219c87e2860f960e135c474826f49a3ce3a6e7. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4008a40-b3c9-4d77-9e48-30f0957c72a6.json and https://artists.proofprofile.net/proofs/artist/a4008a40-b3c9-4d77-9e48-30f0957c72a6.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 0x78f042df54e4a99271eaa9d02efd3a95ce478a226f2ea0e7073ee05997baa304. 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/UGA2F2400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa89f4618680e23f2e9d9882e863b3dc32246104f90f7d112dc821c66953df9b. 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/UGA2F2200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9552f1313a7fd9351f76cf5bfb6badc1261a6ccf0db047a037e3723bf16757a. 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/UGA2F2300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4bfb7cc911f35b1edce3771cb0d4d36d1cac48edfbd84a72469470d7f6e720. 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/UGA2F2300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01272c4e5b5a94bfe6302a57551dc376a2ec80cbebb8c08a9b75ded0ecf1fb7e. 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/UGA2F2300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525eb9073968e6748a19ac59342440c1858bfa161bf7b9380fe17bf077cf3bd9. 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/UGA2F2300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaac2a3329a94b0aa3f2648ac92ccd187f591dfb78f59b20b2ca1b182679312. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UGA2F2300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce1ef679c4140b1bdc668f5e8b54f252a0a40efe8f411008bd6004e0b287688. 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/UGA2F2300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5932e2f6f087c3d7a091375441d527220af0e4900e43c5afc9329772a846ae9f. 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/TCAGM2273706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f64e71a7e8331b91910d3119c59c7366fecacbf201915b8b71dd3c5fd8978cb. 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/TCAGM2273718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2fadede94a0071e92084dd9ba3d90501f16e87b743e4e9420adc836e0843c0. 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/TCAGM2273711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9692b737207e11d9726032664658ffd2c90e4b5590a6d73e24a887cda56166. 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/UGA2F2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525eb9073968e6748a19ac59342440c1858bfa161bf7b9380fe17bf077cf3bd9. 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/UGA2F2300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aa503edbf9488b281bc3f788573c9977f5384c91172208dd3cdc4a5d76f3ab. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AU3UG2200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f2643b384d771c342442901ca1bda19e2108861c9411c1c2f8e3b56c84ee2e. 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/AU3UG2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194b50f14eac304c1dd3e3aca3cae007947555c97fa7017764e8f7d511f54b93. 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/TCAFX2122573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3597fec0ba2dd887fb405a969dc2ee228be5cd3c090439a63ee13c7c3db95f7. 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/QZNWR2004113.