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 0xde3e83687332acca71d6f7f185f4e9530cfa5db615fd9e0ea60e67371315bb8b. 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/518a5266-96fb-4036-935e-dea3e1accec7.json and https://artists.proofprofile.net/proofs/artist/518a5266-96fb-4036-935e-dea3e1accec7.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 0x6fc3a91e5106aab044a3cef092894bec0a8b4b2c21dee51b2deb9fa0dad8dbd1. 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/HUA611501705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8c5c4d0539fc637bd297065a57d2e68de6ccc06ce8a8a26f9eae4a9d7ff5d1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HUA611501682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5812dda03c28a1b216a57114ec3348b8812cfeca2579787914c3196bafa1cde3. 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/HUA611501683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d6d041f2a1987c75834c4cf2333b739c5fc98d7005612aad6165671fa20105. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/HUA611501686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f1412e22be543b14e286e498985f21953057bc86823f6f65f78537952e4c70. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/HUA611501689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e2271561896e1ea1b3749145fc0b48b83e9eb69658d7990a936b08e12f57dd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HUA611501699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd32a11d9aa59522496cb33a4e42b74bf681a17b1d9fdb765becbc49c740de9f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/HUA611501700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c736c2d6ce8ae5b0ab467fdf4232d32295d6a7f63c6d8c1001eff7edea7b10. 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/HUA611501701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ea2f3b5f4688fa7336ebeb54f37509fcdcc1ad6259c679377e1dd88545551a. 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/HUA611501703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae95137b221f5c91e9b09f1b52539e965027fbe9ea0ba4215866baff2e4f7472. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/HUA611501684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7938fbef111f2a71466ea00700cb02afefec243d94526c0df9547064c7c3041. 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/HUA611501685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa034e4c4ff2e79a8bf0a0e5454c1f51e2865a42ec7ab958636221b69c3f91c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/HUA611501687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cc9f0431d0022b72cd3daba7e1a9191b59026c5700d280b44b6fb1850510c8. 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/HUA611501691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b71e55a9ac51772c101f7683716bf471db1310e537b31c2e9568772fac1c996. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAEX2021842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c00aef7bad3a8faabaa268187a9cda48e55fbf68c4e584d489ebfe5f035dece. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAEX2021848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169cb179c7c11222475588478fdb7141586b9ec4c9e9f67aa7b11988625a0334. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAEX2021896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd147c863556bf7176ec1c677a1fc78da8587647a39d8b183a85ba1b3791644f. 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/TCAEZ2043696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab67b214ca3af3d38111cd7b1c02aac5aa397a7e4623fa83cea572fd12090324. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAEZ2043726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d84a45e3cd6862fb7fe63a5d5812491a8a5942c3fa983fa05d3969f16a29fa. 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/TCAEZ2043736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5848155a88995775ae8023c3d549fbbdac0c46c4b5f8e6e29550bc6cc41ef9. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAFH2089367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad9ae6e35b9fdd40aaf94e5e2562216e94b1e76dc7783d50c98f8659605806d. 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/TCAFH2089419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3be0660e0365d6f33e159486651fd6786af84a02e065bd93f544e36890b9e28. 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/TCAFH2089422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ed52882ec06387325c34e17ed4ca8637c80c22d89988e8915755ba77e305d2. 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/TCAGB2279778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689cea50509a51f736a5823d0dae92ef9e5483e1ee5a7dcf05ccacdc0c12d4a0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:24:29Z), 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/TCAGB2279781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545109403e3ddb3614bb2c3a691966d748bbd94628264d77e62de02247ab34b2. 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/TCAGB2279783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aac2e6e6b31aec0be17f12a22055760269a52ba9fe91c4d3df8c83517062f55. 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/TCAGB2279785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2949db32e27919741846b6ae15ab64199284e5d331ade23833e03e1b0095fd47. 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/TCAGB2279787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe45617be74aba42b9389daf60706166a22228863903832406ce6090aa8007a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAGB2279791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f8046edae40e29123c73bda747475cd9df8581fad373b0a3fdfc025fc60ec0. 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/TCAGB2279801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ddf7f49a8e274aa0279201b92c18d93e600597c2973bde66147fddf10b01c8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:22Z), 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/TCAGB2279808.