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 0x88631f086d49ebffabe746e6420f682bcbbc638cd013fcf2a9b3b3d7405f71ca. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2f87aeb-d8d3-46a9-ac1d-f107189d3df6.json and https://artists.proofprofile.net/proofs/artist/f2f87aeb-d8d3-46a9-ac1d-f107189d3df6.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 0x72bc44641cd8a8036d8b01a6dcc7fd9cb347fb1c8b13362382ed02a0cd3c1131. 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/USE830910215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d1705d0e78983ac47dd528bdf9fba5f139f656016231a7ed5b8df14577b69f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USE830910222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17dc391c3d219ac95b9cb750043523086d91876ceda31a18c9ef14b08215b0c. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/USE831550916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f0cd0aebd9f6ba01a3561b0d84db6fddf12432e9d93f33ee729751a0870a21. 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/USE831550922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d67135fcdb32a5b034fa5e8687f2fcdd2c84d3ec6951413a131d36e1d4fb50. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRCDC2010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924225fb72bf33987c74db107d1cdab56f047964ef37fdcb92c38eb1c60253f4. Chain 2 (Bitcoin): anchored in block 957566 (2026-07-11T12:26:02Z), 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/GRCDC2010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774730d25073f1fd22eefa6b93af7827d848688bd3628eab7ca965c8270a9ef8. 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/GRCDC2100041.
A Glacier Eventually Farts (in-game version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc31114920eb4196bde705bf37e72ebb3842bc085370dad0312324182f33a6. 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/GRCDC2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe060f8685d2ac5f8279e8d296d3354af5d3336d020e76afc43f8ceb17634e082. 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/GRCDC2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eb735cf73682dfcf8836a71669dc80691eeda5c0c5dec26594132e5ebb968d. 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/GRCDC2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d41510f504aeeb825f3d96ea4e133f2241648566cd242f1e0cb73b69125dc77. 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/GRCDC2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8916cec88c75c18cd2fb07bbf02b25edaed63768eaaaba36f17d240dcbf7fe. 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/GRCDC2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c46805b7d433c9c988264177ff21f3ce20d40a09cf80ea15c3fa4ef6b3213e. 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/GRCDC2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65b95fc055bb4e51551f9097d32cce9b12c0a6d811f487da04ec13b39abb101. 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/GRCDC2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f06eba8a498dffcf5d6b551fdede4ada4847939d64600581ce58314f551a3c9. 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/GRCDC2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f64f8316f2f20196936a984a9707b2fe3d085e2b18ceea08ae59d0db8460376. 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/GRCDC2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef75da5c609ee9bceb209d4d37e60f6a680499d54fc56e0c12a9d62fba3b884. 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/GRCDC2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57530c8b8424f0c18d5824a803ef6ea9a3801e212b6617e674276e2dc8542c87. 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/GRCDC2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96ebaae77dc24bb5b00a5f394a56fcc97e912cdd7384a489600989ad52e77dc. 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/GRCDC2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cd29ff83c8652401d1c0823bdf47ecafaf1454d001414275d129d739c0906d. 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/GRCDC2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7333dacb0b1462494030fba5b7a64f4244afef6c1d46ea76e4f2b93426aab8c. 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/GRCDC2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227ad5bde282699fb120fa1b9a6714ad97c04512e70b5dbf980fc2d151c2a8c1. 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/GRCDC2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556c3a352a1adfed37ea6f04077560892d3fbb5ebb2e544e3003ed055c7e7042. 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/GRCDC2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb00332c757691b741a366486951cd16440cee5cf4cf9e21cc2d19b6557b7a14. 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/GRCDC2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cb5c599791d9a8293d0087c84f020294aa707d07916eb4aaf0b7a0256863f6. 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/GRCDC2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490b268b5d6d8b90d7ef571d89f0421597319d69b67e436e4c5d97fa24aff1f8. 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/GRCDC2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36d7b19967d9de2d14d617a3b15bf8a9335b9e24ca2e7b05edcb047bda202e9. 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/GRCDC2300022.
The Talos Principle 2 (Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe732353a449b901798e4efa485b3ecce4e7d3e2693c81ea63bcd1d1a1c37bfcf. 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/QZWFL2372269.