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 0xfecd04a95f437d5fb61c9ea20e73cda50d7fa5dd69d49ed99c5bb5221ae0d3d0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79b0edc4-224e-4ce0-b66d-2a89a0c85886.json and https://artists.proofprofile.net/proofs/artist/79b0edc4-224e-4ce0-b66d-2a89a0c85886.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 0x4ca73faecde315f3ede9f9f605bf3fd29e3b42740aa1238e9cb4aa022d1e0543. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:16:17Z), 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/LBA0H1901429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48dd78019e9750ff45284e5dc7a42d540df88e8d0be605169988fc4c472cacc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/LBA0H2000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eae035b8a040821f78ca742f0bbfa1a9b927850bf1061d6984898fb5cd71ff1. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/LBA0H2000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e04a626b3e81e99968240342f1a4fd3776383b2ab00cc1801c12a4c91bd01be. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/LBA0H2000395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f18469d2064053195e72aa38973a376d06e18a01ba34cfa0fa92a69b0942275. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/LBA0H2000650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0c63cd13ec55ca269abc7990f3d1e5ab4cb909b3228a0ae41415bba3633b13. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/LBA0H2001644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c64c56254d06051153bfcc13c79e33c8bf1676778448321f0bc520a26e26ff. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/LBA0H2002198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fedc88e21c01e4027fbeadd000c1c8ae5dc4ba841debb1dbe76363fb20a91a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:01:23Z), 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/LBA0H2002617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba101c1e9465641d01ad51aec4db7c06c858ad8444fb868bf78fb22753382208. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/LBA0H2003560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd037db8f337c83764f3ddd8e54658d4c1ab884add50c4cf6c869700467f999. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/LBA0H2004139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202d38cf5f0713a3dc9bfa69ea6be2ba0904d1a4f71edf62a71ae5a92e1f6ace. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/LBA0H2006036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4785ac8d8c0bf41e0ad2b6d910ef4dc4b8649bbc50094175127af18a29e7fd1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/LBA0H2006976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee81d90d957f218d8d575a046e7cb117989d4addaeec1260f66ae3ae219f923. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/LBA0H2009426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda37755abc09c0715b80be1a2e367279e923ec4c92582e3641ce594201c6a072. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/LBA0H2009704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68daa0062ce8358e24b65cdc66b584b86c2bee5d02dc70590842b82dc4faede. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/LBA0H2010258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e86dbb946db28245de79c7e5bd0050926368e9d1851dc1d050a533232de330. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/LBA0H2011513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7041131bb89f0867a07f4c07ea98cab455bd6418fd9c9a288232e809e8eb35. 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/GBLPF2521011.