thumb|The outer panels of Rogier van der Weyden's Braque Triptych () show the skull of the patron displayed on the inner panels. The bones rest on a brick, a symbol of his former industry and achievem
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 0xb63a1145d97749647cb41843c1596085e9838a9eb6c25909e0386f8243553b8c. 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/76fb1dae-5abf-4c98-be19-f9c8967828a1.json and https://artists.proofprofile.net/proofs/artist/76fb1dae-5abf-4c98-be19-f9c8967828a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shadows (Memento Mori & Crazy Box Remix)
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 0x5ad40cfa7cb1436d109c4867e9e25711deb706d25169cd684e3c87ae17ada8e3. 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/DEKC42400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb003d65410a8f596da113e63567dda05341802dec362c92f2d5f4f59ba3b177. 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/CH7812193456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe54975d0238f748aa539e132bc140f76212f9684da13048a1aac617cefb68b. 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/DEKC42200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40279ad5c68ae4ed90e946df45102cd1385e7a13658400f7738e507053523ea. 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/NLRD52119609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab52ba0bf4a8d533855d29f17d757327918a9b32a6c394c1de922379f3da5b15. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLRD52119556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d66dae5b4a7f08402479e1c9e9b62e74e2529547f26f93fc0ba3b203a0d7967. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLRD52403867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9777280e7cb62ae4f2f8d409805aa42e98affcd19aa0437665d582b929c04d57. 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/NLRD52304351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530ba1fc6e0fb9811ecc73de06cf94a9890028b9e5fe7fde5b9f039a06900d2d. 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/CH7812224608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b2b48e08bc3b3057981fdcab877f38b31d0b459cafe852494d3d6339407b8b. 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/CH7812107297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965afe6415bf0d179c07ae78640a573e181c1fb5a2ad9e902fffe3a7317c0c7a. 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/CH7812107298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ba3d00a320937a9d52f410461ab88f067028e265eadfedc52b4418346b72a1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLRD52403864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7025453a2745b5f97539bd5528b09c339168db9a03b9ec4fcf043dc5dc976909. 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/NLRD52319593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0026409a2e71e770999fba7cc209d08cd88b8f495f95699e4d96dc78fd15d1e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLRD52119555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1728cc8ccce2fc7df40ae88cdca505e66bf261254b94a141360e9a143ebe5bfd. 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/NLRD52119528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415c24df490c61b4a05d17069823082e382104c0f4ffb8d2dceda6b0417c5a6b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLRD52119516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdafd8fbd4d6cafdb71bafb431081ebcfebde6b5add0d1462afd46615907ba7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLRD52119499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7dab26d74e62e022ea8b202b2e43a08692804438ec2c7dc376471499ea9838. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH7812106040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d40d45777d35acd038dd37af8ac17f2ad0a86dda80a7c3b80b7de89ce98091. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZP7F2116499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0405ee5d9beb3ee5fe67cc035b169e2bce1b594cbf97f60e3719f7ec0d88bd. 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/NLRD52119568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143cd4ff5d1c0999d0732cbc00bb677f7d761242d85a5127dce3cc78ab3bcc0c. 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/NLRD52304327.