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 0x1d0fc1201e7e157d6faae36601a210e63eafcf7a7e5aab5aaaec58c848d8bf66. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/945c56c8-5e6d-41bf-b4eb-b1962b3febb9.json and https://artists.proofprofile.net/proofs/artist/945c56c8-5e6d-41bf-b4eb-b1962b3febb9.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 0xb2b38980df3469ea4f9961460aa0ff59c04a0fd78e36dc1550a75bfee0c9f720. 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/QMFME2010115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bc7af90d4a3d7c78d282402144a3503a0403d81e8cfea0f7eb4b5b92344b86. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QMFME2010113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8d594dd90b9fe6f69ab29efc532a8c02128a5de2472a48803817cef20d111d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMFME2010114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d64c9c4985e2dfd3fe9abdc84a494bbf17b1696b3851f709b978fed5924bba5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMFME2010116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8233bcb624b9f820c2d6653bdc720d822f60788ff26f4bde1f4ffe8176085811. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QMFME2010117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104e1ed867dd379f4a09f3abc631528610a18516a79b69d2ec6e4c16b97be4e9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QMFME2010119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9d4239e8f8e740da883855a2dfaa35ec7bc47fb6cd4c1455dc99e166992f03. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QMFME2010122.
Helduentzako sehaska kantak (I+II) - bonus track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a974c90c6c5723c1a185b4e8f909354867c5e1c9f985da6d4bff1eb9a1d1b6b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QMFME2010123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b760103dfc93657286bcf418b61e185772dfc92be453f2ac178f3d97eca7f8. 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/ES5591600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf925d845398681568f4d6b0cade047d505841301ae85e18051260edc6eaa903c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES5591600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed44cbe4858a2c703717edc998ff40f4c033aada47bdabf6a13e235d4b30fd8. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/ES5591600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14f6a9f53f9aa127db7ba34ef181a18b8cc868c8b8d10074cc1e165439d0f89. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES5591600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2b0a56fc1cfb601cd3a1fa76776d48a6c4bb47470d2cc42715a161d2c3e63e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES5591600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99cea88a76526cb718ad2ba0269e78b4f8763fad7f4b32b59b7d49be8c2a039. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES5591600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cdf44e116e4c15d40fa346099c72573a2b205877cc4390bf0ae7989c8f1ad1. 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/USA560849130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f92b5e8c523f22a7e6bcfac7d42f0724546ab5d8e1a115e5000d3a49cd9bea. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USA560849125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e26616fec28ce35c48588f2b19c4924ca69ac1619a9ba84a85cf6f7308cfba7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USA560849126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27873d42da9139bb19fbf11eb46566739463197c72456849d3c8a73539ffd6b2. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USA560849128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08ae05c8bc080726d45f707103b734a3e769f9ec845dbd821fce425281ab5b7. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USA560849132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b6610a3aa0016b3c557e578f85180655b037494eb17b91d66290cd0866ddd0. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USA560849133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2239ac8210275c4254aaa5c130396156e760e1c2cdffacad0446a82635b62cd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA560849135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f1f17410e869a29d77687c48ab5fc5ff1d9bd732aeaff39fc5584c708570d8. 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/ES8260204701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cac2a6335697060827c225259ae91e580382db46dbad934ab38c26550352482. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ES8260204703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f9764599b128a2dfa9becbc16e6dfdb9d846cfa8c0cc7c6b544fd01277d431. 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/ES5591500436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a3255e513eebc9aa519c8b13ef91991a5f7d5402f285a6f03d3aa986419cf0. 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/QMDA61850909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099ef8d1f02e48bd2bc8c0af34d89b8f2fde051fe5123c820dc40d8043816807. 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/ES8260509411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb604c030f3e1cc3fc43aa9335007842cf4a62d6c4f9bf9c5b75b2a27b1ce022c. 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/QMDA61850901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a8f717bfc7482b4ecdf9f24c4f7b2cc6e295d2fde80c6a445ef25b26a10881. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QMDA72290206.