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 0x354d90119aa3d645e287154f65090459cf505409c013a4756da973dbec2e5dab. 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/4c6fdd47-ac98-4dac-811c-3df72c045dbd.json and https://artists.proofprofile.net/proofs/artist/4c6fdd47-ac98-4dac-811c-3df72c045dbd.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 0xfb1329c5527cef5060b049f429d1ad7ddfab53092dbf2ef0d5978398081fd50a. 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/QZVEM1820886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b0d14d989fdf2a157bb959c888224f7571758274ce8ce4acfb278af2918e61. 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/QZVEM1820880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697e37a6970ab0ebece88ab2ead441adc3fe6b5dd6429b992d693939c337ff1c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZVEM1842422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9c182f71c35ab9fff870726d183906af477131e7d79c39120cd0f719902678. 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/QZVEM1850478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be807a30cea473350f4de2a57a29d31510623361dead97016173f2b2e474eae. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZVEM1851535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed430791aefbbd3d893e9aa00597718b731e68190c24e00152ac844f9a41955. 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/QZVEM1863589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dadaf94e2f63d8653d6c4f54453d3be26f2fea041b33e0c93c7e64cf027320. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZZ7P2482668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd975be74940237ec66098adbb9a98b2928fa532ac4649ef766b63f4fbde901. 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/QZVEM1870653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda645c97d5a691c39b6abec9657638208d9613e8924b6a0da09f552fe50bd42b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZZ7W2417638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6781adcf1b79e6a1b762990f2df830d5f6ac37780a850106911b6fbf9e8c071. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:36:03Z), 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/QT3F32430346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ac25e31ef4ef785dc76bc246e906dd17e14178da396ee1ba1893759f9e0b6. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:26:33Z), 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/QT3F32432431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e8f1284787a681828797aa1d0ecc1105a8f527c70e1469b214710b7ed57597. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:31:25Z), 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/QT3F42433363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8839ecc5601117adcec4801c4717f06d53710fdf00b5c6dd46e78cf4c69b627e. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QT3F42433367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4c9ac692739d684d8b16272285e73a63d6955e32c76be8b5a80b5272f27620. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:36:35Z), 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/QT3F42463250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2687b14fcb4d6827ae2d25f509a89c0e6111c3faf6510282c0c278445a875d8b. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZFYX2574188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585866e8368586902fd6109c42ea757a0a363e19d74d8b34dbaf077cec1fd29d. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:31:18Z), 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/QZFYX2571164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013aadbc65665c0acb745f369a4fe910c7f7d3063d23bdc105a06bd31406f579. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZVEM2572864.