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 0xb6e886ecff9e8375ca1072440eb34555b98a2831f9af5ece46aaaa443df52033. 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/0164c94b-dd5d-4c95-983c-2ca9c6496120.json and https://artists.proofprofile.net/proofs/artist/0164c94b-dd5d-4c95-983c-2ca9c6496120.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 0xe04d724e7bce9eb6e364225466e361d0697f3f1682826affc98b5e2ebb3a8d0d. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QZNWQ2350169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9c1c1b2d9ff281ccc156e3cee275ed19ab7775538b5c1447e7c20d3095dfdc. 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/QZNWQ2350170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e29925a390988167a11934293344fc41a2ccea02fc36b225953ac7643788220. 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/QZNWQ2350171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b9abea6022cbc4553b9511e7bcd1bde482a873b7a0a8b45471f12227d793e1. 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/QZNWQ2350174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42006ec46272d3541838cc9c28da845767371b0a43970057890006ab14515e1d. 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/QZNWQ2350175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f269f14d2346c04719742b9d447687801466c870e4fc846c711dfb21f8c77dc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:22:42Z), 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/QZNWQ2350176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5758445381ed063e9ec37ab8202f2e6df173b777e9968405f6e572e11b380f44. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:15Z), 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/QZNWQ2350177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726eb64b6340a6411ca2a40ea1e6d90fa2b83c9a4d5fb7336034f318814d2603. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWQ2350178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c4ae5fb78650246db7a52296b73be28f533f245dd179b3ade9d0ba49103182. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:52:19Z), 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/QZNWQ2350179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbdb450758a2f7e2f1fe5fd4a109a4303b423e0f884e613f4416a44f7b50ee4. 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/QZNWQ2350180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7954064681a1c3a8701a28117b4d416c2a09469161eeb014d16f5f06e541bad9. 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/QZNWQ2350181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5533c2f44000d1f03757e6491974b6e3e0af49e27a9c8db4f88cfdc0dffe6d10. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:23:23Z), 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/QZNWQ2350182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8996da1d2dc659b61c7d53507c50bf61c249e344582e6a05b5e6940baab820. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:59:25Z), 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/QZNWQ2350183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dda2e4c521f77df5e4e8a97b42e3b8d09ec77164522917d493e225403d73fa. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:51Z), 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/QZNWQ2350184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01856ed6263776c9de1ba88bbcfe2e99cec41995349b83dce1294728d502a1a4. 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/QZNWQ2350185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e15e4b3a4095677ec57f59419af7b27df975a6b2975ac4c6df178d76db2ca5. 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/QZTB32363357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d018b6ddd48204bdf7d1a7bd3254b9b42cd89c884ae9de20e4e0cd1afaf3a01. 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/QZTB32363358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd2730823be7232502012c455d3097bb37de1675aac00e828ae46f953df08a4. 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/QZTB32363359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7105cd19371ae6963f03a9895e53db34445b5b0338f106c076d69b2273c23f9. 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/QZTB32363360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2503b92dcb2b316e0d71329cc9c3988e2b9b28fac8e3ba28256c9c49e8b1ea3f. 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/QZTB32363361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f60b81d59699a7cef3df4b7f139f66677d07d6add9dd2abb6a98cbc07112f82. 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/QZTB32363362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e55e33afc9a3ab0629d8b1069ee6cc616e05db7d1ace4dab8d467f596bf8c75. 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/QZTB32363363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2bf8655dff662ed1e5d77903fff850d557ca448e3474789fd61282711c6417. 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/QZTB32363364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83e2c0cb704f95c8abe6d654a769f25fe66b0bd47922601f237ea78152161d8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTB32363365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e500df4369ead3ae8b0af83346264106225e2d8c0c8eeeefa44795dbfe8e7c. 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/QZTB32363366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182961979e32836e389e105ecac95be58b65188db0dbe4a83839a11ff57259cc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTB32363367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb929c1466435707cdccecb512fb200c6194427a88633aa04f8af4568ebab43c. 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/QZTB32363368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0d53b007db07655b12ddc625ea5baa79009968a5c28ea3aa1677c0fe13bd40. 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/QZTB32363369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa216489674e80a1deafdf348ecbd3e2db0257c8f3d0bba7266105286d1d7c0df. 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/QZTB32363370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae29a2867a4ca674262f62e6fc3c2a13e7e4dbcfcf7533e1457ac5156324c6e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:04Z), 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/QZTB32363371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4999e1efe0e0a0ce0d62254de4a120c0fb5cf5346b6464c496024da8b83d1913. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTB32363372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaa580ebf4489e95a4f7370abd3fb97eb14d9cf9d1fc4704fdd855a253be846. 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/QZTB32363373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494b9acd1246edabc965de1ef44109ffdefc3979b819b953c859bc53e98725e4. 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/QZTB32363374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5777c382e8719d9c2ba9dfa4c113285727afeadb5e7985043686be4b1afc08e2. 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/QZTB32363375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc459bcd8faa699327693c93be827e825a171546a9e33633ec03c17c76ca880c4. 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/QZFYZ2412354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc656f8ebc4e7808e91fde02509bced70c4e7aab465f81c3611abc6907d9e05ff. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZWFL2440149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839e6804ecb1763ff22e1df68e5c65db8e415a018a9e02113326c2f5ba629107. 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/QZFZ62569728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fd976346eb82aaa0268c3f8dc74e15297ceebfe8ce38b651ec6bf7a445dbdf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:40Z), 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/QZHNC2560692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb66e62a6e8bfda8ec6be392c4b11f91dbd3eb599b24d305715f01018a4c02c2. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZTAZ2581659.