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 0xcf196865b96e2557bf53925edc21c3c8b100afc648c285d9c6717f8c2e22dfe9. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc5679af-5360-4bb6-8e5b-6901d2122412.json and https://artists.proofprofile.net/proofs/artist/bc5679af-5360-4bb6-8e5b-6901d2122412.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 0xa6de7ca22c17d1828f388e180415188174368a2fe7c23f1369aae47b498d58a5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AUVPM1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0032f92253073618004d66f0950263152e142b622fc99af6b4ab229520e4de12. 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/AUVPM1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc6509c0aa959f5986beb03bfc364e530879bc82a705f81ace882436957957f. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/AUVPM1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf434e2e23b38773fb432e21311175fa3c7b074abed4797ec3011ce86412c0d89. 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/AUVPM1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962fc20e8b7ec007c9e26a7774d61669146ff6c837c63963761db3fdf4f3140f. 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/AUVPM1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab5c89b812e77593d5b867737bc3c8de214d42349a572adef8a19232590038. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AUVPM1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540ca0e2b286a5995f352b92d75dbced8b069d7c1f85a6f0ea3cf6e9d2e054aa. 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/AUGBT2443181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed692a930502bf08c0484651f34fa9825e47f331ee7cd051ac577bcb44383181. 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/AUVPM2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5acbc550d65db64a5f89cee5a728e3bef4dc15c2071cafc4275bf88cf33fddd. 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/AUVPM2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc8560b672e46a5c7dcd27a133d39e84c21405f02bafc6a7c46839bd01ce80c. 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/AUVPM2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e815d4ed601aa3524cbdea8ce1532cc10bc2312ca662934333e3cc4298aa5e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/AUVPM2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f19ff14e165cce1127625d04cfbaed336771245bbcc70075109cf27cb17f83d. 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/AUVPM2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22d17bfcf449c4bfcfaaa16af397dfa24bffeaa3000137afa5b6d8f9995da5e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/AUVPM2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb7cfc4eee984689ac4959ea363ecc5ef704c251f84f67ff3657a865ce4dd68. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/AUVPM2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf96a95c1a9ecf2c2d7b41957f13737f916ac23d08be54cc9cd043810bbee90. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/AUVPM2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc9fee3246d669fa893684bc42406713ecbd6a85cb0ea9fb4e173e78b05d537. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/AUVPM2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695833b39d1f1594323a61952e34984948701dd7f9055fe9e82e2bc7663fff07. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUVPM2400009.