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 0x60dfc0549e5026d063ddc8037cd6b50c7fd35a70683ba3546ee00eafd00785f1. 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/e17afab7-d230-4e2f-b0bf-5da789da65d0.json and https://artists.proofprofile.net/proofs/artist/e17afab7-d230-4e2f-b0bf-5da789da65d0.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 0x9b71eacc5b3146fd9a308b0e6d2b9e8e343621e0d45900345208e01987b77c3a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGJ1532292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29017f82bab6dd70d490492939eed08d3278c2248bcc6bfb4493f3022754138d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USCGJ1532293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c92505f1d9c17e46347368c659bf5af8e32f03bb347f9497db37393d59efcef. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:11:07Z), 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/USCGJ1532294.
11 Chinas Hacen Pirámide en una Bicicleta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c97f6cb23709fac1dd9fb0469d2b0a38f1d6f64b178bcdcfcecf3bdbf5465a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGJ1532296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ad76b1f72a59be96b77fb962a69ac9d4fee7822effbbe1fcd66f1c416f0562. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USCGJ1532299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be53912f368e61fa6fae848b951f9e4b9c3ad053e91ff8fb2aefb93dcade318. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:06:25Z), 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/USCGJ1532300.
El Piloto Comprometió la Integridad Física de la Caja Negra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9687f53728eb63540469faebe50abdbf3fd696a3358a5ef50b0239adb6571d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:44:34Z), 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/USCGJ1532301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96677e85da11c3112d5d9b8860580ea6b2954c38c20e53a6913e4a9cfdbd0b13. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:56Z), 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/ES71G1835958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4fab4626f1a155c86f7741a798abc69deead5b637f90fbdb32e88912800dc9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:54Z), 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/PEBQ91891110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9ca275e32d8bc2745a76bd8cdde62dda076fdbddef5be24a3065686d02bb2a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES71G1835960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09ff91d98ab59a7d354918dd8480c411293219d716f92aa0eeb4767439fa271. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:09:31Z), 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/PEBQ91790092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13d051429db6227a9ab1164a1f02965b7eb6f4ed83491b511224385c1206950. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ES71G1835965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43443b27652142487e6d7b57b2c8f2e8747bc4abc8b919d23ece62c80c067bee. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/ES71G2045490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8da80d30252e75e4f9b017e35020f492a8182ca8c95e3ce450d3560720a8c7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES71G2052570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20af7f8f55ce336e4609593fa834881b9e0e738d6e03288756fe3e508ffeac7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES71G2139302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9abf75d44fcdc83bb1e3eb67910b36f0a9e175f54b0bb43cea54284e7ae332. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/ES71G2139304.