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 0x922465381535037ad86c2d59e7988db25d03cf75f512d128e651b8928a8f4b50. 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/a1c02a9a-0ab8-4443-80bb-ef5113079c97.json and https://artists.proofprofile.net/proofs/artist/a1c02a9a-0ab8-4443-80bb-ef5113079c97.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 0x360d6ef05f70b7e2e832efb12c48e8b663e37250dae36a408972ea036008854c. 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/JPR751300541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0ad49305bf52f96a4a2e711e530641c5c0379f507a3da5c392ec3a53107e37. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPR751300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf684115641230ff32b546d8245601248ab03249958ecb94215107990d49fcc77. 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/JPR751300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a997cac5bf34229aec797b7bc094b5c211470eb64393f684608b17e7f713b36. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPR751300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2efd1c1c387fe5a89d2c89fe81b6d6c0f749d984c9fc445b5b6f4478e41549b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPR751300546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6031ed2c7a4a719fada1aba565f5dabd6d87be072f8249feb818bd040f1122ae. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:52:38Z), 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/JPR751401052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b96de6d5f981b0c5027d0bfddee9b26ece536ef0e0006452b26ef31e31aef5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPR751500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2da89b80c5f602137e8a516de7eabc286c49918098ffbe33db5b71435e34a8d. 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/JPR751500730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81196579b4bf88bd6ee3f0abaf320fa999c4162071dd3f742104ba9846f4f02. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPVI01818810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc285cf281b10d3d21dd06ce99223fdf957e85d9d363f60593c007f4e66767a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:01:45Z), 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/JPB602065188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef08dc76521dc9e853ca3e9c99c4386af0d7f58b74cafa92ed040a693a80f4f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPB602090272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ed1bd42bb0c4947cc2b1b97dfef008e890f04eed5b2d5454b91daa2a5d8728. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPB602074190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa298e27e5d2ac7747f951c60d6bbe8dcd41ad859096566f3853f69c23ff257e8. 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/JPB602057983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc285cf281b10d3d21dd06ce99223fdf957e85d9d363f60593c007f4e66767a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPB602065188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb936990515e0513af993a217fa04562a0c10ffb311690a3b7117676d1cdda481. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QMDA72202027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95317e3036fae273292d49ce684ffb4a7ad3fee40c23e533c897cac86372e02. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:18:59Z), 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/QMBZ92312603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1528f5870dd889eaa2a0e033f05580d98837c22b8fbe0fa8acd7e03725053b50. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:19Z), 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/QMFME2372380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fba90ed5a1be4f84f0eb25159f464f7c0c2f3331b3d98b9f34ddf10e7dd1fc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMDA72410295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04de9fe461a6f5aed32d99455d48d4b5b29b171e773514863b24c52f06dd59fb. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:13Z), 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/QMFMF2434529.