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 0xc2086e3b6dd228a2309e0d9466d6ad73a08d7ae700121e8ee40762be6699cc69. 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/899abf45-4b69-4d21-bffd-855cd2dd31de.json and https://artists.proofprofile.net/proofs/artist/899abf45-4b69-4d21-bffd-855cd2dd31de.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 0x12c6ae56b699210106a7b6e69ea5dd4f89e8e57c775abd9135bdcb77cd862588. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:44Z), 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/UKEX32216465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ac2863ed8be7ae384547fa7b0dd044d1c82fef9b5c49502d0e37300b47a118. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:21Z), 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/QZNWQ2222287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11deb4dd41ab199a06ac071f42bcc64cca34d01a96dbf39c56081298af56c1dc. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/RUA1H2154582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc780b00cba7d19c3c3464481e044237c37ea93045b16ec79e970fc185df8b14c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUA1H2154584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb157a19d6fd3173a2e39a6135307658e8d54e539c0d5368d1de409a2f1ad22d5. 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/RUA1H2154586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d5d8b61f0c65b98186eb07c9dd4ce419a2fb4e75e367443cd94edf9d5741bd. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:47Z), 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/RUA1H2154587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb799f05374140e6c50295fb145fdc14ec7cf0c2ff550ef3c09532b8a32b88c9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUA1H2154589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4c1ab2fdc749b7efa88c81b5189887be65d950e6ff211d8bb0d517b2ea8881. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:18:57Z), 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/RUA1H2154591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f277ac7339670a820cd637b54dd82cf074e73d019461cd63f5bb34fabcc8aec. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUA1H2154593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865ff81d540692e5a6097776969d6ee7562626184f5a2d036d5ff08421b871be. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKEX32423305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d01cc6c88861228be6560f03e0c0eb0f37171c4a633fcfc325ff974e9de3ee2. 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/UKEX32500695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0891dbd2a86a11b97354ece52fdc59910e1c41508900bf6557a7aafa531f7053. 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/UKEX32505038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00124a55cd1b87323a5b4599efc6748245aa425a45d24094ffc4fc7dc4946b19. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:22:50Z), 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/UKEX32507373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dffd83d5203d5278f4c8e3ec92d9e8936833ee22b2e72702c2ece4591d48b1. 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/UKEX32525265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839742da3aae24f01ec4abab5aaf7d7cbbe7ec26f47dbc5179db680e8bda8d2a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKEX32546211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a9b5570dbbe1ac2e78ead9ba9b7bfd6333e0ce4167f6bfb5756fcf9ceb25c7. 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/UKEX32500316.