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 0xed47af445faef3bc54553c9d00fed213db1dee80e7e42081f72fba31aca89061. 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/192f44bc-4eb7-4b33-b1fc-644f8418fe06.json and https://artists.proofprofile.net/proofs/artist/192f44bc-4eb7-4b33-b1fc-644f8418fe06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music For Swinging Dancers, Vol. 1 (You Make Me Feel So Young)
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 0x0f481a4cf0833a38cca51ce20ee6b492be1cac64b61f49fca8215e41ebcd45e4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEBL60490177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02c053754904da113f3a3e65f41248b334a58cfdc24149a6e71cd32978bd8e3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEBL60490178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17310fe96373eb0c6d9be5d3ab2151e0883591e71a344019e276db8f0d771702. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBL60490180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cc85a0583ac60d8e030e06295f68f8e9fbf7c8d2509773a63fb7a4496aff9b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBL60490183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853f4f27dc9d6384f043182529a23d63abc67ec9aeb3324e66bba6afb275980c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEBL60490184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8da76bf7b8711538c66150797f7764278315f5774e150efb63788adc525f0b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEBL60490179.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbc614a1a3a14b0da85a802a8f37521a6c38597e35b1cd06c11f324cfff1df2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEBL60490181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9575f724466ff8b3d5292456340648d1f99cd6db1171804e864dfbd759d80c. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEBL60490182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e957d288c901c6b4565d354ef1bf17b52cd2d0cd0844677ce7e4793019ab6f1. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEBL60490185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e3779aff1cf57cf360fb128aa5897d8bf8a2325df026a16c78dca448ae6de8. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEBL60490186.
Music For Swinging Dancers, Vol.2 (I Won't Dance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d459c56a1b7f6663c057843a7109e5bbad50491f631645c4a857506740ea27f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEBL60490147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcf38e40d2e402b8abb1c0aeece6f7e4faeb4063056b9996c04ecc74e31e168. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEBL60490148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129fd2064bffb1208b2a05d4bd9a2bddfc5c02ef7b636b82cbcd36cd8f09f1fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBL60490152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3230fe7f4e51a056fa3bf6dbb89cb845a05238e21a08bd34b8a6a805ece710. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEBL60490154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab86851abd9b0ecf689419c6a023dd0ca6baf2038a07f431b3afb73d38ed52f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBL60490155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e460eab20bd9e4c982402f2247bbb3208bd23d2993804429f1643454a8a7f44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBL60490156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8367af52912a16e01f1a233fd4f16116d8e31ad8e2fe693ab1bc07edbe252f04. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEBL60490149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f7c93e7b49b60852a7bbb9cf35e1eba61c9ae82074f36bde1d1fa7ee7bd9c. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEBL60490150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f92220f75b72e434cc741e5408e0efdf7a5491fda97e4f2799bdd6a93a81ad2. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEBL60490151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaed8fe0a5775ee3c8e40707f656bba707b6e9f284d5d09d9e52de4dfbf33eef. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEBL60490153.
Music for Swinging Dancers, Vol. 3 (Cheek to Cheek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5fc4c512686a6ec8b1ee2ce5d04a7705873414cc6db5e27735dfb3ef221f0c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEBL60490127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc725e66330d2460e074f4f04f5f69bf5e88e28d43bd6acd20c6d6e4862be2131. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBL60490128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbebf227c0df92d5ccb354dfb8a046db9f703c0554614a13b6545aebc8362ce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEBL60490129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5985285b2ef20b55f7bc365ed55e62f90b2322ec7fe5d4cd2991676af6377712. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEBL60490130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991965a5b0adb1a00402d801813a042bd49d2ced592da4c51c948722047a66f1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEBL60490132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8c6fb9a01db0f38cbcfa494f52ed10951f6a7e080062f82d18579349b3a607. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBL60490134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eedfc8a89b03d71f78dd9edeef3ed86a83b8f32e266f382ff2c560b6850f244. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBL60490135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9d04754c5f29071b5c5ee4ffbcc5b4676e9f8e4ac552181ed2f672bafbc190. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEBL60490131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6114d648620444c567038021c2ef06519b8c097a786de8f0e70c8bc16a721be. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEBL60490133.
Music For Swinging Dancers, Vol. 4 (Close to You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6b990a6408cbbe3763efd9664381cedf4bc332399871aa8a4a6fd65d86a48b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBL60490316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6c0f8b1652a4b303093341b3ea6e645aec2ae537c58160cec69a5396c02ad9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEBL60490321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3107baa5da92b741a7253bea8910c6280f68a3b0ddf2062e0e54db8aad5b94. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBL60490326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3921e323baa875ad4dec9fa129b1a2e1e45ae31f13d6b7731a9f4c1943624b0. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEBL60490318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81f64a4ef53fefd9aaae552e8f41bc3f7d30298526fd3215cdfd893541c9d8d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEBL60490322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769bfc112ddb2f77f74d38d6391304b0a3d9f4009396435d745ac440822e508f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEBL60490325.