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 0xc2b33e13a3417b7e74dc504267dcfc414f459109cb8a8e9853e33de8a1a631d0. 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/b4694b30-dd91-4656-88e8-b86bca9d6b3e.json and https://artists.proofprofile.net/proofs/artist/b4694b30-dd91-4656-88e8-b86bca9d6b3e.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 0x312a70acdece55b119bba58549351854f36e07d335a299fdbaa283ba413a141c. 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/DECE72302592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf986aa5046d9bbe7ca3777c5ad39d149dffeef42682c73d884909e9c6e6ddf39. 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/DEUM71706133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafec4a48fff9f28d4a64b2daab4b112a6b1333351592628bee5cdce8540edbb0. 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/DETX91500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1307c6d608a04fbc7a3ed80797870db433be582a0e20daa221a1a0a7a432b2. 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/FR9KQ1900450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862485a8ffd4e3aae4c8a8e9ba53c96c8c7140e9a9cc4eda0b643351ead7b750. 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/DEVY21800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096f87739d89de50f1f14cfb08b2e6f8b1f1d3795c2a9cb667c3b4582dac9cd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEBL61700356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf698715d2706e6b9e863cccadcbafbaf064fa21db2023208244fe55c475835. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DETQ11400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc4aec7fd25aeca97ab57582c82a1133b0f77a81d9b029efaee9c26993f322c. 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/FRPZ92324651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1d8f9b682c5edd1dac1a66eb746228623860b06315dcf1817cb1f9d20c1b96. 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/DEWS21700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf567af27009302dce0fef900dfc0757050fded95db2a059ac0d3b6cfe8c0507b. 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/DEUM71902319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7633f713427c08a7d4c761fa7009a5a88979f257fdb06b363abcc1f41e52c1f0. 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/DECE71800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921265131492f96abc74d96b4f216dfffabac63b8125e683a534fd751bcb9d3f. 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/FRUM71800285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dbd10eda210aacf0c35f0a4c83b3a781b272ba6285de5587dd8c2471603706. 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/DEUM71807246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5d3ef1f0451b813fa0550a85aaaee00c1be8ab58b9a9cf3d1ba8ea2df2ea4c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEUM71902841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05241bdb2a227e4a2931b1696a561448b6c6da104bf31a09a9d64c82b6bdf2a. 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/DECE72000399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f27842784ca74dd0fd9cb67ff44fd3e51cc18aaab7e637b0c2fcd323933d10a. 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/NLG661800295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b44080adde719d2d18a920cfefbbdcad02a70beb2f35b1fa66b9a473b3179c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEWZ12000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb861ffbcefaa78361663b3c8a325e868abf2a02b4337abcd57539b5c4e105c49. 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/DEUM71807244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d793370c113927e044eb4041179d78aec9e35822aaa5557f3d8942028c14cb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCM51100735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae8bf6e727f21d3375c6760f2ae99896ed8e216f056d27558bec7ebb180bad4. 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/MXUM71502649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ecfcd35f776a718be88ccc4493908b136c39717ab0d02c92e6f327f95c9bdf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ121753522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844c716799e7b268903f6cb95469a43e57e23ba1bb0670e433b0b160617e8ea3. 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/DETM41610376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d876ea38b3865023ab3158e6f8571b69ecc34c407a375e185f2131999ea913. 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/DEXG92100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab55ca67b7d9bef07c915cc90555d728243a68387f8a82ee15be2a8f6e485dd. 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/DECE72400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4cb225a2a2724117ee543c9e490f5ae2db49304424f9eb2fb8744b3a893ca7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DETX91500458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdb3fc0463fbf8d8d4ba1591c033ae7af311c12b56055aa88a7203ae0e305bd. 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/DECE72401571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad447b4f43a6ae9a44cf7f84ea9990faf4a3f37747e39a708ecaaf3bc575ab5. 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/DECE72302808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc1e9fe09a6680e3301ab2cf54efd2cf947c719d9d1e80da02d6afb7e13fcc3. 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/DECE72202367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271b9ca45c0dadc7b0f81cae82de77ec7280373aff2b42cf46dbc92f41935c22. 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/DECE72303347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8abf63a31eaecbdda1a277bd69a6241ab5e0b149c7b41aba2bcbe249e7ef0d. 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/DECE72301951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f98e30eb6efe24e1c1dfa61093cd885b8f4ed6d8a52fd8b517975d890d343a. 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/DEXG92100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312a70acdece55b119bba58549351854f36e07d335a299fdbaa283ba413a141c. 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/DECE72302592.