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 0xfd767a37ee41b5ae3ffe65a89a67134994885950219bc0728042ca6d315b0f0c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/178e69ef-60c3-4c30-8cc1-ec56f8377b9d.json and https://artists.proofprofile.net/proofs/artist/178e69ef-60c3-4c30-8cc1-ec56f8377b9d.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 0x6f5bf6cf062dd59a0683d5dcb1812019977b4998d6f8e4bfef4dcf4187695aff. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/INH100624091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847650b2c7aa4e62751c0f34caf521fdde29a4fd0f7d1a983fb261aaa60eab5b. 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/INH100503900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7882f56716dca425e430a309b76a275702af1ce39055ec6f8fd98900f41272ca. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/INH100503901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe23b040fd33ccad83f10d3c578efcfd6e0c5a850f85e213d4832b2621d0a67. 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/INH100503953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6457661b4e65f04c62ad201cf02aa666048a1cb0bc98832469d67b5c3160cf98. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/INH100068770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e985f5b4dd5640dfc0b27868101ab174b75e5592e1e11f1c8fb2e737a4f93d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/INH100220410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6fa02ea1ab8ad1af0e4e885ceb63ea9ae0e98674e0126e96b9b6fe56a1b61f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/INH109961130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaefd57eaf7387cb5863286252607718e8cb595196a21f74467397f71abd1e40. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/INH100507497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe329fa7d9a87762a4ecf107cdf1043be3bcaad572c332e33e1b4b66db3dddb6c. 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/INH100210100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3befb883d9692e9bf726ed67647d1014fd7b2eb769baa1b381a0d94cfa1707e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/INH100071290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faa3152f99f7945e5c6bb7183812af0ca04eb29f5beab3ff8fba5e0a7a26d30. 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/INH100075340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687a793b9466a872143c09a5d320b808116c99c28863932ca37c43f93736bf0d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/INH100323020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a839717383f943120da76b43fda175dfd76d13ea07b9d7b12d92268e59d82d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/INH100228710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0f7a7b037075b9459dd95a0bb303260f7418fd4c2da167644f7a831f73d3c3. 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/INH100222140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60504691aabd7ea5177c7d8ca12974e9358743d4a215d2a8ae08c72153ee7d6f. 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/INH100222510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703161086e46eaad1362bf1e1c77b7d52f14f0c7dc4930740481f263b62d792c. 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/INH100302640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d3e0ab43e85852465a910d58cb9a2856df87a9fbdba81a146899ecf6b1bc5f. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/INH100302650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4b0eee163633e6c2ababd9b77b52aabf596dea80d3f68886d30fe24604cbc9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:05Z), 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/INH100302670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af52a1f84aef132fae088757b1ad12b2d0ab4b7bbb6d9fa178ac553ba72d6e5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/INH100071650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77b97ef97a39bbc8c3bb9d8369486df0c2da4ad94c79e5a98800a2b7e6a070a. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/INH100318440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a75d6a946a1a4fc92151b4bbc249c5f4cbfbbe276e1a3c9f2035640f86b0f03. 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/INH100605828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b4e1a41808dd19a6091a7998ef5b47a8a12cfc6ac258f117f3938a2d7187bc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:54:40Z), 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/INH100307900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61c223361c9226186d1e5602a2140981259497b8e258610de16e2037584a4f. 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/INH100502170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5cbf661e8a53378992411a8db47facc3b8eb12b36bd1bb8c45ab0ae1af8144. 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/INH100303200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0380171567431e81c471005b2b6120b33ee1a441a4af04ec722ac651f9e0751. 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/INH109962760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d89089969967e05a5999a85fdc0aad01b68ac434b606a552e26e6558349bb6. 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/INH109962770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf3f15183f417451ff1bd4a22ff9a3cb62acd39a6fc8318099b755e65695c73. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/INH100211600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3857e67450cd44fda174c46cc90586cb53350456d621c02e351fe5c559bcf438. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/INH100504332.