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 0xa5d937ec2afc08edee2405b671561da01198c58f8e63e0170dd9f697810f5f44. 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/259f8250-6f91-4b4e-8a2a-34c931fbed13.json and https://artists.proofprofile.net/proofs/artist/259f8250-6f91-4b4e-8a2a-34c931fbed13.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 0xc0b9cfd1301071c90625e2837ef0ef69759d0b058f0bfe755f850f778e4b04c0. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:57:31Z), 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/SE6HN2437969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb446c12fa87b323ae39b1ca16869bb06c8411bd1df9a13d4c4a7353e8ff4c94. 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/SE6HN2437973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b37da0e52f657d71850a121d34779edd522b232f315695538d40069a71d583. 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/SE6I32453635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c09019cae0d068c834d5cd17046824017011b721bd8f51fe989ec35b7c48e8. 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/SE6SA2419764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b2d503c96e4dfbe633bed62e786c64cfe072ac7aff23228ee51808f831ce38. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/SE6SA2449508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a22a6ef66b2f2136d61323eb1b6a9a4f9b17df4ff0581e61d834e28ba9665c4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:01:47Z), 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/SE6SA2449510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126ddef5140870552b78445dc776a96309dcb23b116dc46375e24f37cb4fa55a. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SE6SA2449512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639f58a28b8d9e6dd8f8a06f19e8fd113f57641b23153e381cc132f09ec5dc97. 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/SE6SA2449513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414cb401778791b3f493570544cf8c4743455d9c31b8386a568c986f7754b15a. 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/SE6SA2449514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeffc5072ceaf5e2769339dc7570552079f8be5213d016ce655760acf2c39409. 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/SE6SA2449515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54661958f41768fbb9de1c3a35a3250487dae0017f011913c673693d8ffd91f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:33:08Z), 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/ATBK71200346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950df6e8581607fd4dc974585f6a7c646488a9328fb71fa4b09519e7494c3979. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ATBK71200347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe003952f95d367af5ba7e5e9fe78355e0a29314ec1777b133db902190ba961b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/ATBK71200349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0c1eaa0924b5845fc2acc8b1fd38dd2e57328a72236d5fe1f0cae40e8d400. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ATBK71200450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcce2c58460d609b689cfe420a6da2c53a63cb2125ce4c5bb6282d8cacfb0d2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ATBK71200351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd042d78bd3a5998e21cd98edb85fe23c5ecf878450124d99af4e5d2ed567d26d. 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/ATBK71200352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28e8bf858aa1bf1fc5712f964ef2a3d543712210f42cbe8223ecde975a3e37f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ATBK71200353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a26d931755b502a4884f1266db5d11bcb62acd95fb71eb10cd15a4cfc9c82c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:45:43Z), 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/ATBK71200354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecac09564798715a8a590c76cfa41a7a2a190085a551e6f93698b582dd63a65. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ATBK71200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c13f90d2fd29889333eb579e398a08ac10a8716bfee9dbae9ce8eba956d6a68. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ATBK71203948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7235b5d3cf048129e71dde64d098f390029acf294630aae220b2f5fc0bddf00. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ATBK71203949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dd86a14c85ff861c6736f60b6fd6788f1c473b756c6521c6dd0e50eceadcec. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ATBK71203950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a8db5f833ccf1a10c9b7c6271216b6ed04d101bf0ddcc2f8ab936ed6d08ed9. 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/ATBK71203955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879c658c5efb4fc39e582734fee377866f141dcc7220da03b3a265bae4252620. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:30Z), 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/ATBK71204224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc9edb1353044a28f1eee6ca5d6c06afc58b644c0d53c9732d0626af714dd01. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ATBK71204225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8515e0d55fd01ccfdff654fb9baf095695c304bd1f4bcb08df77e7bb4835b32. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:35:57Z), 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/ATBK71204226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb95f528570f381668b66bd170ec133906017d323a2e0aa729056f3246bc0ce1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ATBK71204232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4de2b080ae130261bb5f1107730e9a6b1c91e0bcd48badd2b997c9508d7894. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ATBK71204233.