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 0xe5f404b7b824f03e198d5bfd4d332dfef550c001f9eeba87f6076ec6ee601acf. 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/b954a16b-7536-47b6-992b-b260b032c173.json and https://artists.proofprofile.net/proofs/artist/b954a16b-7536-47b6-992b-b260b032c173.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 0x02cf60a8355e09aa44402cd009656f02b054d76242a9743f0cfac3b81d236963. 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/QZFZ62041651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea234b0bc4c840683539fbdbe2ad72a003bada83ff7d152393a682539819427. 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/QZFZ72091549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec382c1fd486d60f87ee76dbb4e6ffe9d43cb3834a9b92c1927986465870b5b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:10:15Z), 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/QZHN42030656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbf772af1a75c542fbd8e2e003b850db630cbd587bc6f7edca514dcdd489b59. 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/DEE862100534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42a74466aa2a7a6e6818a9e9e24fb36b24fad2b67ca784de1b67bd1dec0be89. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEE862100895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efa1564dcbae72bebb75c4101ad5a2bd8c56a7f951692b6286c3dd3267b7827. 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/DEE862101333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efa1564dcbae72bebb75c4101ad5a2bd8c56a7f951692b6286c3dd3267b7827. 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/DEE862101333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8168fc76bfeee7993250f9f9fe15aafb86d9e0eedabc17cce87044ab7eb8f22e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEE862102024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa383804982ad219b980a77bf0635c04826a947bbec00384ecfa68f66a67faf49. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEE862102827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e8773549b7600ae01a87d557001b9846cf2f7567c2ebb38349c6aa4b86cc81. 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/DEE862300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c54f197600fcc25e6beabacced7a472cfa96a007a3970ac8ddfc82a11672877. 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/DEE862300909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb9957f7b8cba5269cf5a5abcd8677aed5e33b8de527ee593648c910e8a8760. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEE862301320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a7759118ef9c5d6ad5c747bae738d1e218130ef52dbaea3b74ba175ee120bc. 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/DEE862301448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e8773549b7600ae01a87d557001b9846cf2f7567c2ebb38349c6aa4b86cc81. 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/DEE862300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e865452f1fff7699504550ed9a23f2cbb55a1c6b12c91ed5c6a2d95718543a5. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/DEE862301450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c64909c734da6b26ed74dc5a38deb92e5a7a8bbeff9e543e0238a4c90b0d3ba. 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/DEE862301451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754424e6899dec2fda61431a34c3dfbe10856cf66cf11c60daba4d6b01ef5581. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEE862301452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d61729af0b8d1e79235773346b4f9d1e75923e096c9aee3c0a0529814ba8985. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEE862301453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1500a5c3469980f247dece86f0150a819fb3fe430c661abbd2220937a9ac54c3. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:24:17Z), 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/DEE862301454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d3c094187047df9b96956db2ebdd988e497f1cc9942f3262f81824a8d63341. 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/DEE862301456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724e58f3925337b6c52b54b2d84f5997deb9d8dee74fb74c1cb1e58c326fee42. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE862100923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724e58f3925337b6c52b54b2d84f5997deb9d8dee74fb74c1cb1e58c326fee42. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEE862100923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1258a0c176ec3bc72cb73d8ae2a693897afeb3a5d93732601bdcddebf3b29bac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62250156.