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 0xba3c09188623551abfcd90fcc2e0ea6e462d5027b3d417360d8f17b8c99b382f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adaea59c-1a1b-4002-b8f0-f581941e911f.json and https://artists.proofprofile.net/proofs/artist/adaea59c-1a1b-4002-b8f0-f581941e911f.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 0xc24205d2ea75151596d96fc71a78a3df662c7011eb2e4f6261c4eb9b36da7495. 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/DGA0S2497136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95f2be70a62e6c319a2030f21314af86feb99d6fa3fb70362fabcc5174d698b. 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/DGA0M2427991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9202e36d2c0c169ce4d6f6c1a72ad39385fd02c767ece06ec9e24e6b84189497. 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/DGA072415660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5116383d57ee1b0c35547b15d7a32a9cf11c80c7f5c75c7c8b3c1c0829c6925b. 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/DGA072415243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d7b8ebec1c05aa383a5fe53c025ff8039933a613684e774a9c33957ce64df8. 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/DGA052449347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0352a1dbd54482b8328e4777aabda2014b57b35b9f6be6460bfd11748f2eaf44. 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/DGA052444941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04191b007a7d620536156f5da2d7e46ba8b0ff2cc6ea716e90836aa355dd119. 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/DGA052444896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750ed4a552aee1bcc1eb6bbb876d53834df45639100b4aedb3e19a0cb7e5554b. 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/DGA052444944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef021f63fa0493f17f3d0bc2d1271178a68dc5f8d29ad49b8fc889d94b14c5dd. 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/DGA052438427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda1caeb77cc9fccbfffaa281baec1ecd1652a9b9d9d839efadfac2e928c5ee0. 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/DGA052438411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635d824c9e45ad2200280e71121eca282f39522c468567cfb4457e55a46a6da1. 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/DGA052424459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b5f73411ac16f35d1e077307228807ee449870f4a33bf64ade8906ba168aab. 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/DGA052424456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec1f124c34366fba9a6a06d67b4642a8676d06b78f86b3975bf9c83a946f391. 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/FRX872457097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee759963ef1a2078d4fb715657a7e5344e9010f7add812f136a75d01d6aba90. 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/DGA052449363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e8b95f240a189c78e88a5757f33d8ecc1fead0239e3921542b090140d6e387. 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/DGA052444781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccff9003ef6b4ad0e327fb54c54161d829e9ca995206972bfc7fcfea1577a4a9. 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/DGA052444782.