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 0x4d142ccd47bcf2a8d1e1893dd82059fa9fee44572c45f753379d2e1de44000de. 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/4fa9f19f-4e08-4596-bcf7-417b7d7b0df3.json and https://artists.proofprofile.net/proofs/artist/4fa9f19f-4e08-4596-bcf7-417b7d7b0df3.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 0x60b58fb8a3feeb77984a5ddb4f3cb803cd0adcf4b1c6816bc44110012c8a34d4. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAFY2122847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21a9130fdb9120987b4ba3da52521b89f04c8416871e58e4596f58b4d057a28. 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/TCAFY2122852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6230238ecd35ee22832593e0ddb9751d761bc2926e4ef76f9a598936728a09. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGU2349884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f6d26b51acf6d7974927b58abaa901c142669aba7b159506c0bee49d962573. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCAGU2349924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451aa0179faaf7eff5597482f79bc6887b0798b8a0199f508047b34ccab88daa. 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/DEZC62352735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79042f176d47600673246cc63b99ebb9ff621b91d7383734c9cbfcde99c5f906. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62432811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6aa4c3ba60083bfdc68834a0fd5bf70a43f3ef42c42d95d50d4715e9fa2e02. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEZC62585492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03af032e9302bb7eee75730fa622fd8809eb7b1aac08d48e381122033037b47b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKF22300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1f66bb06e6cd1242b0b3f59824fb7fb35acc8930419414338ea8b42dcb7d3a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEKF22300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999d323bc0ea0173aca1345a4db04cef1f9e9943078486c235926d8217dbbdd2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKF22300229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96d92f7a542575d33421bfe363737bb4aa0ff0d074b14937ecf44d9f8a6c46d. 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/DEKF22300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dceaed6a8c43b53539cd2d1b9b6424eca7026f387da7c7b174642ca30343ae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEKF22300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabcd62a6999584e1606bb01f55d21a056a1915036df4b5d49e552eafecc0c94. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKF22300400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d02bd67d2972e4cf3b0a6261f2d8e4d0b70b194c3ccac17d3cb953e886988f7. 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/DEKF22300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679a302a37d049bf98374a3db3fd2b40d40d98b299bca279b859daca76d21b66. 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/DEKF22200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591dcd194d736fd61595d9017dc298a08db9815974a32ac907303954846e7dcf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEKF22200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999d323bc0ea0173aca1345a4db04cef1f9e9943078486c235926d8217dbbdd2. 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/DEKF22300229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96d92f7a542575d33421bfe363737bb4aa0ff0d074b14937ecf44d9f8a6c46d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEKF22300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03af032e9302bb7eee75730fa622fd8809eb7b1aac08d48e381122033037b47b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEKF22300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef10da21a8253a7ce84dce257ac0ae9a6458411c2cb1353013fe37fc7a350305. 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/DEZC62444001.