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 0x28ebae497d42d75316130df2bd91a8b0e1bb76c2d93230fda22e0de19d743dc5. 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/167018a3-30ed-407a-931a-cb5e4f93926a.json and https://artists.proofprofile.net/proofs/artist/167018a3-30ed-407a-931a-cb5e4f93926a.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 0xb4e9b72e8c1755f1665f96828892e38ed56d409375815dd1badb1a647f6b1033. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH2383522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dcb261f58ea293282ee99571716fdeb844cc9b6255c49fed6e3bf571197d6e. 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/USCGH2383523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec627836a7e3d4f0d35f86cb48007dee72f6df7d6beeb1f20556c79f138cfcb9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGH2383524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412f58c98bb148cde86bba9240d4b8e02d18fe8590be7b97c9b3ad04435afef3. 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/USCGH2383525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73adcd3f9d7f647636fcc73b88acd21417b0b58bc76ee1ed5f65485651a466d. 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/USCGH2383526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea793e293ac1a2af92ff7669dc28d6365dd8af66a79bdb08408afa2c5287f5db. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH2383527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8398c147c2382242f8ad135824277751bb401fe9f6e0ba870027c561ecd32f76. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USCGH2383528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57caa2130f6611c31748c3385ac196bd39ea09e3a3a718b98140c29c6c730a2c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:01:35Z), 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/USCGH2383529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89be761b48309a5cc27756f7d1d9f404380bac5ac6a347e6b45e6930a6c4055d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USCGH2383530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1021de3866ec7d509c13063cdc57fce14d32039a55d2081bd33afd436f2441e4. 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/USCGH2383531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26ae0cd9b9f964abb56bc44132f4643215756313ab4715f53e9e4ce75d4b138. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USY242407122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23847fa8eefe7184c01ddcd5f1e85b28ba5e31371aeaeeed126f75e8ffdd963. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USY242407123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89179371f2f8e1bdd6aafff5a9d0a54a650169dbdbb229916b361287d7a7aa61. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:39Z), 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/USY242407124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e262e2c9a375899743a43f12c0b39da32ac949adee0afd5fff74d2826a13f28. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USY242407126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d2247c9b72e6da88027a6df9159b190e6ab0b13bda69398e17de9fecc6742e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USY242407127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd09868122e9e40374ce094a1eaf2d8abbad2a2cc0476a4eaee92c0925757de. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:54:05Z), 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/USY242407128.
Don't Let Them Take the Bibles from Our Schoolrooms
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69324d9f3dbe74001a2e75fa4d28f26807cd26996f65c02e0af8bc0f5a30c56. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:47:21Z), 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/USY242407129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11338ec07312624f50978eb1ffb2500986fc885b0110c7f009c1d2b2c5cc5fc4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USY242407130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e678468e61ea8a8a23a3e431b20b3a6147e43d7ae77b6c559d1ccf0a88c237. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USY242407131.