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 0x5e7a5f0310bb294d650cc7757943b9a59583b1d1d6192890ce88ad5d235dbd5d. 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/f5d6ed3b-8edf-4913-aa3e-79110392483d.json and https://artists.proofprofile.net/proofs/artist/f5d6ed3b-8edf-4913-aa3e-79110392483d.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 0x330594468a24222179454c106b3eb75937032ad9302f3e9a57dbf1b7cd7989da. 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/TR0390601041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf446b221a7c1216041a2395a1ef616b14cc158c144498348ad7a61a7f6ed7d89. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TR0511002314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12df9c7c93b280aaf7bf453f24a67d3c48bc742f7f126b85700739390d85179. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:04:22Z), 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/TR0511002315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7ff1709b04085886394f45383c470544f54c69985e5f76fb2cd59f5051f7ea. 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/TR0511002317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb65a88dfc934d4b1af8e4e16175cdb229e4f8c4b1485ea377f72a3746bebb1. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:50:44Z), 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/TR0511002319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf93053e741216e4e4cd787685e0237e1428d4f8c8a8a5ee679ec17d3df736e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:04:54Z), 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/TR0511002321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15213038a305d7c73388c809db41059b87b0db6cad2efa3769b9dcb393f0b1b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TR0511303072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6efbcde35c91f2bfde41064bdb7f48581adcb58558af4fd20fd466221aedea8. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:50:46Z), 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/TR0511303076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d78bcb5d7adeb6d167b6af1ce1dc97d10bd489ffa6a21fe205f3e6bda259320. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TR0511303078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cf98152714325b579382b3d2f170109b4d2dca25a83c79ce083373cd49125d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:20:42Z), 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/TR0511905232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff6a896cb9977ef34b9a086695618c54c13c1e465de2e72e802fc3c35650dec. 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/TCAJF2562078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc07a9e0e7525b630bc10b90ff828ffedc2e6006a281adfe303f808c7fbf6a4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAJF2562184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e9ccd2d5fec74253b0df7306e41bc687e8d0b4767b71c46dc9dfa81bde6521. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAJF2562626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98349882ae4541dc3d90a0b85ad5be1ad6d53a82c2b8d9e3692de7597e2e7a3. 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/TCAJF2562375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33d0d98fe95b5f2df7d87f28b3ba01a2a699afc9b632ce0d7dc3f2cfc967847. 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/TCAJF2562566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75619927b78a52d9f1b861587c5eb39b21c6f923711afbd26fefc8260886538b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/TCAJF2561747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71ea26f990355951aeb670c9d70a54344e178b332ebcbc0bab4ffe1030ad32a. 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/TCAJF2562244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ed7b8e4a06ac38d02cf0d8b518c919269c95f0ba3ff4caa40c2132ff3a5ed3. 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/TCAJF2562302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18962e9b7420c55c636278be31566d3a4c1ddf85a09f7acb262a72cfa9f0c6d0. 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/TCAJF2562450.