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 0x5899a1c1a7101ed9d1393a76d38c4f54ad34256fe4c58fa9d74cb243e1cfc491. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d600aedd-37df-4a2c-aa56-acd33c020c7a.json and https://artists.proofprofile.net/proofs/artist/d600aedd-37df-4a2c-aa56-acd33c020c7a.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 0xf380407403d9d6315f061ac5f29c9526d73fef4b33c5ac3f0253f85fb7198d59. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DKABA1101841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acdd4d834989d985913e7bfd61addba26c3cf1c842da5b2e61e9f59d069c10a. 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/DKABA1100372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df7d6ab94a623f9a439e0c4f46cd2cee9d39f91ce2bcbf94b0b3effbed36530. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:23:12Z), 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/DKABA1100374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf74e40a7df45714655012eaab0213c923109b8dbaf8ebfaaca40fe56eae38d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:23Z), 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/DKABA1100376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fd079565e71bb9eb8158198902237c925c139a3c3630023a57d120f8755e02. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DKABA1100379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5741179abaec73062f1af96d96c7f7bcac06ad11fe468cc1d93fbbeb61385bf. 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/DKABA1100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4994850ed841a5c51d56ef99fca6e939f11ba15c683932230b6d2e0d8ad43639. 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/GBLPF6679110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4700ab345551bd5b831ca1a4d38fc18ca9be3203a87fad13bf6e769a7b8b215b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF6689519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36547c8a6f7f4fc5faead496cb4a6b2362175a86e57d141764f2299ec46c717f. 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/GBLPF6767004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad37737f15ab53b61882e37f38d2b47d95db53df520ca526882d2143e1c980d. 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/GBLPF6763957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36547c8a6f7f4fc5faead496cb4a6b2362175a86e57d141764f2299ec46c717f. 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/GBLPF6767004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42acfa5e40953b4addfab719cbb79b55ca936dab738b5c900219edb3cc39e58e. 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/GBLPF6766712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd3e6796a551ca5e48df1be1a5b37a4633ba9febb4c8fd2232ecdb90e5b3096. 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/GBLPF6768842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac1f78c2be73e9a25fb473640736b4894a52113152021eb0fc818dc9b0e4549. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLPF6769424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b5e76e07368e91dc22dca9dd300814d4d96b9dae3f614b7dde8262f2d94834. 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/GBLPF6773846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aec28c571e2dbf4d012c155e6fb9fd7194b865fc4faaa67c6c538562a05d827. 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/GBLPF6773845.