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 0x725b0d98da95b34a917c77b98a6f2f32321d9bf2d0e3c63c933ec34db8b7a5f0. 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/42a2402a-32cf-4f35-baf1-311085e4c623.json and https://artists.proofprofile.net/proofs/artist/42a2402a-32cf-4f35-baf1-311085e4c623.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 0x04da089fb963f1f7a55ed29c02f69a556a20a8e57bd3afcb538bfbc6186a4068. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZYHM2407114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ff631d90d85afb4a3a541cd24b4a02039cb16de6f366ccd74d2f0a8167e1b1. 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/QZYHM2408557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b4206825bd360c6414f97c51cfc9b0b7a7f951e7e8aa0103c1ed6630a31186. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZYHM2409619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e724a2484c37f83f37fdc1883962e37133d9249d900f6288f3a8e0449362f5b. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZYHM2410859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d572a976737c0212aa01490e4c84ea8dd9d007466c2d5f69d8011f24a35879. 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/QZYHM2413400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892514ea313902547243732cdefa457a53dfab6c20c81f5576796ce4f90c432d. 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/QZYHM2414163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b577a31b80042bbf2f6d9f98e517025eb390c82c22225749ba8a1e103ebaa54. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZYHM2416341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7cd035d751fa69a9d96edb27dac4b3b3360e1580b829e77ee2ffa7095e70ab. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:20Z), 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/QZYHM2416677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf047efef82561362d6087fefb586ae6bc1be6bc179884da72cc9e69e714a610f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:50:55Z), 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/QZYHM2418707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9294d34316363acfef6a55920c8037e25ca4d20ab0ff0a2a77866b92e051c795. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZYHM2420826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd8a20b0b9de19e6909c7d4ecaa2c70ac1117c2d9348c5d4c5cd7c1d0519ee4. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:59:11Z), 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/QZYHM2425082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ab34c2e1873878b485ed018a10225c49b9098526fe05565828900a3304551d. 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/IDB772109343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4467fa05c322093fd6b2059c1d64e44d7ea59b9dc965497c15f3ae5ba9316a09. 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/FR10S2573102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf366901314ac9e1531b21ebb28eed953df1e5246ffa16315498a466faf365ed1. 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/FR10S2579738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199bec03958f36c319b7285792401f379020eaa4f3ecaa8a28286e694fd775d3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM4TX2585778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2aca26a1b300db8085ab782bbb77b2d467917373067e4e423bf48343e01e275. 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/IDB772111613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf747104752fa12fbf4db5d0c0daa863f301a4b376402723d96c99ac7a799c79. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FRX282524118.