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 0x30143e56b864dcce7abac8c30f0aac90a4c1226586d76c9e92914cc3c99cd308. 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/16966db9-ced5-4ceb-98d8-5d376e965e80.json and https://artists.proofprofile.net/proofs/artist/16966db9-ced5-4ceb-98d8-5d376e965e80.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 0xf4978ffc4b8a4b056714eeaf3769b65c831f5fb346193cb636cd80ba83936c68. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ32491853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085ba47653d95a12e1bf44e5285e90c04f2fc5f8dc527f3a4bad0bdb779d0120. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTB22355085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921e6e290bce29746c660bd475f507e15128b5be2f70028655cf3016ed590375. 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/QZFZ32491854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb537e5847fd85804ad1e3a3c1260f0943fa5fb146788d4dfa3f2cda46ec6029. 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/QZWFP2378223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a2afe2fb9d7273751d2e755de9ce1ed944e45aee4b4130d569a6807f3db55e. 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/QZHN92378410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57cf047c3cbf4fab45fe937f96826db9b715cb5de484df7a05dbe3bd07316dc. 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/QZFZ32491858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3a36ddf6ce8bdd8dc85e552a7bc1428b42febaca601750085198078d2b399b. 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/QZK6P2250346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe08f0d7f9443c2bcd866995f56535fa82e323d5ca870abd12bd56604415e3cd. 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/QZK6P2250347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5806b928a254c6aa18abc5724f8a3dadd22335359114c182ff7e148e5c4510a3. 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/QZK6P2250348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503e424c3f6abb1757515e8bad084556a703d5cbb91286ba98a613c8ecaf8900. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN72264970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f1af25b50af1cc3fccbc6308faa7291c3df7a7c6d95e060a9da976e1141f5. 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/QZDA42215868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a3cfc08f3160a2613a1b9bf31625f77e1697acf4461d443ae6adb2733b55c6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6P2250351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb537e5847fd85804ad1e3a3c1260f0943fa5fb146788d4dfa3f2cda46ec6029. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZWFP2378223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085ba47653d95a12e1bf44e5285e90c04f2fc5f8dc527f3a4bad0bdb779d0120. 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/QZTB22355085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a2afe2fb9d7273751d2e755de9ce1ed944e45aee4b4130d569a6807f3db55e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN92378410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664e02b00c25ccdf1843ddfc25f7b89cf1cd060aeba813447d80aef85b946f0d. 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/QZRP52211050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503e424c3f6abb1757515e8bad084556a703d5cbb91286ba98a613c8ecaf8900. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN72264970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f1af25b50af1cc3fccbc6308faa7291c3df7a7c6d95e060a9da976e1141f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA42215868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440b1863aaf0e181502a14dc220f875b1f4d370c27f4e6f808938215d66c96ed. 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/QZPLS2167457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbec37f382eb1f65f7856a75966007fc174e8c4090b39b0222b6ed6dbfd6f91. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFU2149415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739ed70388dee00db95d1a5f513074366e6973167dd2d03f2da3d38a4b487063. 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/QZPLS2167459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec74adbcd36b01dbf4f6ca6e4549405369018e4dbb1c9a1e85d02685d2fd3ff. 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/TCAFP2108942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c752c1f0034db3a95f4570ab877dc5b383c6b25f9e0e8d1e9806a8168eb193c. 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/TCAFM2108344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454d0dd149c615cccdef73cebedd10fb2c30537ae64e2093c01f28821bab2bbe. 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/TCAFJ2182237.