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 0x43128fae2344bbbe3ab4bd8832698267a8cd8157c35d54632639a92953acb0f0. 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/683bd547-76e3-4569-b989-6dd1f5f726ef.json and https://artists.proofprofile.net/proofs/artist/683bd547-76e3-4569-b989-6dd1f5f726ef.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 0xcb15580b1db2de5df4e90b48f9a59afec105210aaeab40c35fc78f422b7e6a07. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ZZOPM2105545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44adc1f2f3fe6b1ae84432bc43a8e68799bd4f73d0fe6b006dd71c20093ab098. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ZZOPM2105546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a19580bd98c027f709eb0878f5dc6eb79e47d8cabe9191c889ac5b7c7e2f51. 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/ZZOPM2105547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bdcb6a43bc6d48502f29a6a5b58102f5450e2a925a85dcd745038d196f50a6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ZZOPM2105554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0936934fc7bb6add4d279211d58ceb762d5238e95f2450c63c3a7d2edb5f5d21. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ZZOPM2105555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eed0032ec7a5be53350defa26257a6756261329e6fd863aaffc5074f3373aa2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:49:01Z), 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/ZZOPM2105557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cc054024676c18dc11aa872811e342b7d860146102c475d97a5f073031c166. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ZZOPM2105561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070b055d8d3f886fdd3960c3d5ee18f7aea5d4943ee158a8e91f14b47b272fb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ZZOPM2107975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb56d199a00e5993fe9e7720d734a1d1f0d73f246536e0ae97fb96deddc3bf3. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/ZZOPM2107977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5cb7b768b4ec0209772e1cbea8cee1271f4a354138c179b4d27ce40add7fcc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:57:57Z), 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/ZZOPM2107984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70758395cbda40878e0e0b9dbefec96b17fbde87915208b13b8fa4d685805c44. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:17:29Z), 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/ZZOPM2107985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd558541202028e42d374f8855021ea9603856998e69bd7c72a9a6168b0868c6. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/ZZOPM2107987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1f62f69e5adef04f072930424c240179022661a6f43bd9e8fe1848e42f28e2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:46Z), 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/ZZOPM2107988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc05f71cb5aa4a91247d97e3cfb453558d8e41f10c5b835dd86b674dc852716. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZZOPM2107995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ec90408d4c95dea86418e84d97e6993940c5689cf4e793bf6f0f9d880420d2. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/ZZOPM2107997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf359783d4c709523e20e063e908cc55a58bb704cc9e46da0537af43ae64733. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BK4DA2204079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40874f4b2f31999002d0ec598cfa7a8d9b22e8bf0261f8fe8edcc76ad19f4bce. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:39Z), 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/BK4DA2204082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cadb1a230c277089367e6fd9ef858c30c972d602e7cbe32bb00d0b79691b370. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BK4DA2204083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad040ae7ace8e5268af1fdd29495d082fe15da1dffb16398900ce88e46eab16. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/BK4DA2204087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106139e426acc2b5d944af0d4140507bfff7b6ea02e9d9ea462a4239b119db6d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BK4DA2204089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad713ac7d816493184e7623faf10ec5c098f8b8f105ef3dbc78487cb5c6f9e85. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:54Z), 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/BK4DA2204092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d7b27b664edf4e1e8f2adc75bfbfb941be8cf0e284f82093ef00b5bcedc626. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:18Z), 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/BK4DA2204095.