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 0x7d13c591ac06325318e1722f7f2723e9c8f4c48c57e179ab2a3ac8e89e522f8a. 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/6957175e-3427-45ea-afbc-e78e7d23cdb6.json and https://artists.proofprofile.net/proofs/artist/6957175e-3427-45ea-afbc-e78e7d23cdb6.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 0xa40cd9f79ace7e206cef90f1451b10681bf8c7dbaf00c80f758a0e66bcd0e433. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCADF1793204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08698c77401ba1fc6d2332334f44bb6ec0f348bfb7e29f18b3595622f06e11f1. 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/TCADF1793207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a5d19e5ad7053a6ece650ba2ee0edacd8b2255f64279c9001c93d8dac1f57c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCADF1793210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b60783708290510f37df39066c9e13949e8b966367e3e493919118f69e739a0. 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/TCADF1793212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3041071db4193adf1c450977d2b2eebeebe801b66f86e63182ad875d86adab. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCABU1449101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e758224993f489a9acee05583b9aa6a5437103a81c2b6765c5bf040e5aea9d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:19Z), 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/TCABU1455182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3297fd3522d5e351317109d23de92a6f9af9f0fcf12105b03d9dfb0a0951942. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:34Z), 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/TCABU1455185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21571a4c1dd2b6db4d3d497a309c3d11a0e85528837c602c8472302b85e20150. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:16:53Z), 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/TCABU1455187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0508efcf58c2797587c743f234398af6be589c2a001c6e96936f25091f0ba3be. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/TCADK1734426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b2d9d90b16212c39114920b1c304c3ae8ac637db3c79edcf6390960251a6ac. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCADK1734431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493d06a6e1ddf35694bec3e4f12c1446b8c9b04d47e0ea06302380bacf012b61. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCADK1734434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0703f19c629a954926c8223cbba73cf8fbeb13243f0606e782cda23c3bf4ab07. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAEF1997407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55c8329714429b24357d398a1e9d123836d6dec947ad2c9fe026531794b5498. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAEF1997418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60658c78ae47323bc16a2f99a72158825be127d6836cc9a978f79c8b86ceec9d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:26:41Z), 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/TCAEF1997425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5cd7094222bef8400b7bf1eb7c142303f2e3640bf3bfb1f4e90504bfbaf9dd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAEF1997427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdcc33cb72815d4b518679ea28d1cd257c79019b6691030ccd88f1f6e3f3450. 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/TCAEF1997436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7477ef840d61013cd1182b72de73728131c2be0548fb8ef93ccb73c04a0733de. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAEF1997438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5078caa28c1412f8c75c23cf4563a5d89f06070c70dcfb6337962979c106a6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAJC2412290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b3a45086cb93defa0b44ae6886dc164a5604c6b754a656585e54a222280959. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAJC2421149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6968c9dc388366337f3c37aaec129e797e212495544e69b0c164b1d6b5800d14. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:36Z), 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/TCAJC2421159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79043c03777bb6f5b61eadc6f7c19ea18e4988f3947a567128d7794f1de64360. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAJC2421161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb70cf518e1cc492277ce146da450530a5cc9062a377dd1b952e38aef6ff3ef. 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/TCAJC2421164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d2d15ccf30a51697ed50b81a545aa801005df89e698db9b44f08b3ee2b806e. 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/TCAJC2421216.