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 0xcc38a1f5b87b98fe4c29b623d32c7078bbb25cff9aa68ee7405cfa6b321ddfde. 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/d6a92bc9-264e-44ee-95fc-a1b4b5832b84.json and https://artists.proofprofile.net/proofs/artist/d6a92bc9-264e-44ee-95fc-a1b4b5832b84.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 0x3a1a9d6bca1b71dbf64a5aa2da479f4cb171122a86e60cfda7364d7f3b541237. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZNWX2108694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd3da39b7dc36513b3874061d7aaedae6059fc12bac7198397040908a77da51. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZNWX2108695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50f8cb428dfe89d84711b67204308fc60b1f9525726d7bcefb0d001fb2206aa. 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/QZNWX2108696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114333c3c4397858f817efc0080e824f29f3f6732aee2ee0401ea4abaee13c1c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:11:30Z), 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/QZNWX2108697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d777916698837e1361a0fdc16566498f562c7ee8036597f4884c1aa5ba845f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZPLR2196129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0590bac10f8068a7523e8c72107ed0166f8acd4c59688049026e2a93c52c641e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZPLR2196130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f852ab921cb337702ca47649c7edc5cb463ff5f0b0fb44214493dad3ec62794. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPLR2196131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb0d9a735947e3655c899d53ed218d339b7c9f6ea9966b1962286c75155773e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZPLR2196132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6878cf22215740c5155159ec9bca08ef8900e8e2ca2f781872d652795fb427f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:56:50Z), 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/QZTAU2137642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a0a61fcd46b23f3c712c94512bf8f2c23e8ba79967d6f6de3a8016836abb9d. 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/QZTAU2137643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edc0a5cd9d6b619a41be2d2a0710b2e26eefc474f47c45ccd88fbca33cd12ab. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTAU2137644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8052b3482f4115c08ea9f81bce171a90915e5e94cbf6e1c8a82b0af4b55415. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZTAU2137645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5c926a977a9f61ce0fb666d521b019b36c7b40da6eba527f88c7cac63aaf43. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTAU2137646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff46c711e68ef873767b65eed753794caa81c9da1cead40f0d939dcc0a4a27c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTAU2137647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdce08bc82f5a00d855b5cc99a58a67457040fe79e5829695b56a5657e019740. 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/QZFZ72216488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4b314f583fa1e2941d85d7f38f6158b234f3d8bfe05414c6085a7f775f4fe2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:39:57Z), 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/QZFZ72216489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea76e294d7a9e4a8ac867d53b492d7da1b548b56724ff37393d853235935bd2a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZFZ72216491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783a883c5d599b7f88c8d545a56a80debf0de2c125f474377b07ea7904a8330e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES52200241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77250d911bcfc3f9f62bcecd3a5125eb292bd807bcd1d07a9f03d8abfc9f53f0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:45:44Z), 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/QZES92211635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda76b9d99ddcb755c0e4b768cfeaf5fb158e63e10419830241cc7520d839f4ba. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZHN62223795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf23b4af4196b51b290f73766280e550c1f870a67a6ee10206f9fb1cd0d3e5fa. 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/QZK6N2242300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a04681aa3218a2551341c5dfecb3e65b8911a4a3d973ca835d327a988e00d6. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6G2201741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68f38ca1852d78eb76c56820fb07e76967c3ab2b49e29db3b0230c607a38fbf. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZMEP2263338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf2ab93a017d0ce127e21891f13e9fbf25ba54ce152d9117ce8ad5e640cb949. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:01:07Z), 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/QZMEQ2246873.