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 0xec512e829061c3392f7ab4267884144fce02b6134f22e38b0551c36b07860dbe. 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/e2fbbe55-b15a-41bb-948f-b7352cd10759.json and https://artists.proofprofile.net/proofs/artist/e2fbbe55-b15a-41bb-948f-b7352cd10759.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 0x249bb937b12ca41992d49eca585ae5c6ea7ae83b594269ccd929f1e82c4c19c4. 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/QZHNA2361166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66c8830cedc36d8b1b14352ba7e6f4215383aee02ff5c14b593c4fa0762635a. 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/QZK6Q2388360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72a677a122c2d443aac70ed759961ce25ea8b2146996e12ec7f8a7d10c0b59e. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZK6Q2372523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e6b79389d2afbece8f6345373e99b05d4cf3b4ef7bbf63f662cf1f78e54f3d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6F2376712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9427b05d0f38a9b731aab08a99808c0a35774087ca251474e5cd1ca94b024c9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6F2376713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe51a9c1c385b82c7e12d79fbecc9f83cecd8b51b239cd308be8e21a17c03c66. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:27:53Z), 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/QZK6F2376714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32936eff6680b0b34612a9253f002803a59b5c6ff00673a7ad676f7fbb616178. 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/QZK6F2376715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94627629f6f9800dbe7b933d6576c2f6938a44171bf9ccdbcb9b40ea3258f1d0. 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/QZTB62349328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d27afe8f462881b33f1fd71279299b53b76a5cfa72c5a6a0d1cb634d2561d4. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZTB62348046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9555b1258acf3c5ba134b3c9ccd750cb76a5786587e619935980620342c535a0. 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/QZHN42481303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd0e6315120c3a37f8b365e53420c152c53d86f1c701934b4fcdac6b189bbc3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:03:08Z), 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/QZHN42481304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0317b21ad03a429fe84e53fc4478ff16c263162590859cd6f4383611291a18. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN42481306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bfd039aaf221715ca1a8b990758ea6a78fbcf5cf63d387f1210cc8f9ef0f3a. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZHN42481308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbfb8ecee13e6e458ec670bc85067189ff098fa2800ffa8731cee9ced6dbe50. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZTB32441801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa122eff787c7a09f00da1d7ae6de47c94cec14e6c2fdfd0d19c3edd605494910. 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/QZTB32441802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae86fa82f82e0c11392b80208bd2129ad9e9a935117cca999e8a8d6d81af0bd4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:19:55Z), 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/QZTB32441803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d641b1c52805945c4346a5cc680fcfa8f2324e139fb43ff3fe2062f330a5c27. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB32441804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3d9aa34ad64947a8f289330e285ac349f98a82514f2bcd069406099fdc8231. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:23:43Z), 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/QZTB32441805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6768b86dca604b86a85ff7509a0704bc486ca1981c1440f0849795777df78c. 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/QZTB82416513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85bb283e69b3c846735a3147dec914879b2ea87a5949464092df85e956b4080. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:02:14Z), 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/QZTB82416515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2d34bc82732b8d6cd232c784593350d0a29f34209d1e34620a88c4174f354e. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:24:19Z), 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/QZTB82416516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd3f1c88bad64a3c879cae5993e355712e09c65af5ac256205b35ebc0eb2b48. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:32:06Z), 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/QZTB82416517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dcf0d58b8f5b4afbd1533c5935d93ac8c2cf166bd30bdf874258dab8398ce8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB82416518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2779f0da20ba906bb11814b1ac061c00afd302594e945804e5b7a206273b56. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:38:43Z), 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/QZTB82416519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ee349de6aec46677b6f668c8b112c8820c28f1373c5576abae1e7e72fe9a7d. 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/QZTBF2431267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeb802e04c81131355d0ef7ba8460a66822cb532b1713c42b5f6ae8a0e29ce7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTBF2431268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed5412aeb47d2ed27fd5873700587cadda82bd623583dee21b93591c71ef33. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFL2421849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64e0c2359b9b3b0fbc4e1ecb63a8a57b2f470b68b54970b7790a0c5cbb90676. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:07:09Z), 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/QZWFL2421850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0007e8a271c575c8eb54dcb61c48c4a2a69b4638ae1f55955b296dd420bac027. 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/QZDA82529812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23328678c24d2107b3e74862ae8f7a5f3eef14454feef67bc148be46c9cd5e2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZDA82529813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda06a7b35228b19ccd3a8891aa0d44fc17285ac76091c2fe6910162ee2682481. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:58:58Z), 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/QZTBE2589587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912c0dea104132f3e79978d697a986c205a18e7f47812dd702f628cc13ae3523. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTBE2595293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec9e9e3a4018bbaa5df91fa69ad800812a53c588a3316e305b983a158521cd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:08:33Z), 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/QZTBE2595295.