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 0xb1cc166383a1778acf9cb6b006a606898d940c42bc08e51e217abb2935da0bec. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ab1c3e5-93a5-4a7b-8a7f-2b194eb13013.json and https://artists.proofprofile.net/proofs/artist/5ab1c3e5-93a5-4a7b-8a7f-2b194eb13013.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 0x9e194800ca7d9dc2cbdede1568eef276bb5b8b1550d98ab84ffa49e4993d981d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6TI2026560.
song for a wedding / song for remembering
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f1839df79f8a479d992a6f44c3e7a1b622315d7c7a5c3e2ca9d02662b48b3a. 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/SE6TI2026562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bda2329221f643f29813ffc87e289e80475a993e0d53699417b39a41737ee85. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:23Z), 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/SE5BU2144581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d7edce42912fee9a31319a17cce14f6f1488393c1f6473d92438ab898e90b9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE5BU2144582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b665c1d842227cd28da50a1a2bbbabf883c3256fcc381e7ec7c7bf7b134af8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:05Z), 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/SE6XX2181133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654b88a24fe0230d800bbfcc326c634e8bc13afc95e7ee06a76d049aec84f301. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5BU2296561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ad2836571217b3d6ef8fb90aeeb15bbce6318f47ae19f68d347e7016c1b70f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:00:36Z), 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/SE6I32213421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4d1f8f5afdf6d159a4b60e18c27c964277a27644993a665d29a006bdbdb880. 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/SE6I32213423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361279f5289aaf047bb8e45741f3fa1aa7eb01c425be6c597f090ac2bf14b1e0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/SE6I32213424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb0a17eeca5c29eab2cb8ffc866454fa2eebb1398e49aa6853389e16def0ac1. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/SE6I32213427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdf027faf43768cfb8828567af4a5cf46dc55ca33367724910949ed35752ff8. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE6I32213428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424b3e4b4cf50873efe461aa3b99c3c18f3fbffad098e7b831a157b8c7ca9f8e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6XY2212224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb897a2549a724d3fd6c4494c338a5bf7ca66fc7f6e41dc25966bde4401c815f0. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SE6XY2212226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79814477de0f021d8bacc2b08d37c753ce5266adf1fa9fbb625e8f2b79b14b4e. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SE6SA2206466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f2b2265e13d70e31316d5f66bf4777938f78296e1e50cfce7af23c9eb64ad2. 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/SE5BU2391082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f69f9585fae482a8e1157df06dd6f1de96b0a360c97a069636628356e9d03c. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/SE5BU2391086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abc6610171e75ea44427db1d5f603ae72f891c7d1ff8870039fa9c2dea49d1c. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/SE5BU2391088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918b0e9d7cc88e02e99eaf7d5177ca00b53252c71aeba164811b6144cc739584. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5BU2391089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2541f05104dfe276b5b8f70424ff2dd52b72e42343b3e758c5aa09731247e720. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:31:35Z), 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/SE5BU2391090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b08b6413129b2969a7dd0d9b82888c83ac722b835bddaec0ad90e16b32670d. 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/SE6XW2390136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fea03ab0b9fb9231bfb297f2d65a650c208e561da70dd6345ea2b705cfb33a. 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/SE6SA2398489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc671854289418bd6b9a553f44b7716319c9c0ab5704c293a182a6a51ce0d18e. 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/SE6XY2319357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d2b69cb4f8bab908e81e661c263721ee65cc13d673934866bd663a2d407b6. 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/SE6XY2329399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adf45abfb2135ab0f4e85162baaa7afd3cc1acb6c141112fce56f42a8ab267c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6A92327380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e53ac2e9248c8bb3cb60fa300748e90d03c4619d53b497f9f99edde793073e. 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/SE6XY2392282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7435e3c7eb33280dc9c3381ea10dc091a4e1f174963d685926d5267ee5788f73. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5752421572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd2c547f6d50ef443e2cdc3bd5f907656bb22fcedabd54db06588d298bf3afc. 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/SE5752421574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4a7e1edac15f212d80dbc468845961ab2388bd41af63068152323f1e290952. 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/SE5752421576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8dbdd6e900384eee10bc6249b7e782d37abac817dec14e8b3149e80c52b172. 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/SE5752421578.
patrick j. swanson vs. the state of wisconsin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5be108aaf2832b3077712c6f8502cdfb0d3da76c6e827c32f701f2bb6e09b5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:37:50Z), 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/SE6SA2335697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e02bf40584e0458cf41d0a057eb45dbb0711722566cda057d66233d6470b6. 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/SE5752421580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f904abbb82cd4541307717a06b356b9891901fe254dd7a46c720845b499882. 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/SE5752421582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1118e5d49d5dcecff71b2f6f54366651b115c59deea855d7e916ca67c9baf568. 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/SE6SA2459729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b024fdfcaa34220b0e490018e58f9e1ac3fc1e49fbfd2adc4a3efe2ac2a540. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6SA2459645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f8f54b3e65d9daadcdcccba63e63baea749fd45c48af467791dc0d874d2351. 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/SE6SA2459646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d5c51d6e2c2de8f42bc3569827e0ac48a85fd64c22f5eb637f5b550b91c3fd. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:35Z), 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/SE6SA2459647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad26acc018a45c32288ccaec32f94c5df90af9d184f4fed5453896721a3ec409. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/SE6SA2459648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31e4d6461d733f1425404552bc89c1ba4f0f6bc5cd9edde804bbfe82c1e4f45. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE6SA2459649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb025633304090d810a675171e1940a213b39181572824c13f88d59047366376. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/SE6SA2459650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee0e94d9f8e43345865c7ecb69cf360cf8496805390f204bd946330695efb67. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6SA2459651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7056522f2a8a8b7f71b3afeebb242b805af647acae58e65c7ad580f3af4dd43. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:58:23Z), 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/SE6SA2459652.