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 0x0dc03c7ac8b104cefaa78dc86d949c99cc30a5644070d09e11e21cbab3966c66. 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/574eb251-c969-4f90-addb-c868a4eda8ac.json and https://artists.proofprofile.net/proofs/artist/574eb251-c969-4f90-addb-c868a4eda8ac.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 0xdd67dd50860dfa3a96342250f5191f914e8f2476e0e72960b6ac7997a011396f. 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/QZZ7S2451515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679a7508de8c2219f84d01c1afc27304499847c43abb34150a5ffa7d7a710069. 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/QZZ7T2422431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a72308b1ed871582c8db61cdf1cb58eb1ebc7388ab3583e504f5364f23f6d0. 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/QZZ7T2422455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367551fb12ccd2bc7d34db78e0f9c577d2763a6ed4dde86975adebe746975489. 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/QZZ7T2422519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd05697d123b45fb5c6fffc638c2f2b22064d008686d09180cf00c7746fd6404. 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/QT3EX2472332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394cfbce3500f38abe42872a043a606228a6f7f2392198ffad030dd3b08d9d19. 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/QT3EZ2434389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796cd083d9c4f8696f57b87dde296a94fee288b564c70241d784886172af59e8. 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/QT3F22471138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cd94cd76000f109b404f03b8a1ec75b47c88c933821f1a16ed358f5e5335e3. 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/QT3F32493544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6293e86d2f7e038c1814dadb886e4d8602814b617e45f482a33ee706081eef. 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/QT3F32495119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7129aa54d1150d5c6c10f761cc2749de216db23e89c7758ba247604fb61104. 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/QT3F32495120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb038b711a41d3730463ee00aa20e9f3d2b6dc0d1f947838959c5e8e3fc4ced97. 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/QZFYY2518731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6418555febe41a076f868b448f0287d00487305d98d34fd424ccb2d15738a42a. 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/QZFYY2509530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a389c021762b8d603d379499696d3cd7b23392f62f3f3d07641157cdd3e88f. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZFZ22559227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615efe9fb6c911ef4600678d2e114f6365a200ee28c09f51adef5587487a1bd0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZFZ22559271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432204af7000e264318272057aeacee581adc433ae1e415f8aa0d1842383e380. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:17:19Z), 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/QZDA42517241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c3144f7bb28b272ef62453879193981b8f32f68f2ffec8a24d50708d34e8d6. 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/QZDA42517258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5f81cffdc78f3dff45f497637ff4897c405d0b083d5075d62e014db052a415. 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/QZDA42517265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bdebb80620c81a30c1db8d0e5abbffe6aad0e31b971523f43966f229be58d3. 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/QZDA72529789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4148e95c22fd1baf3b84a49b2888d5f33130293a19b82c30a2ab89fd4dbe1cf0. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZDA72532090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8abc99edc9c21a9bbaaa56f56d25ca89ddc91800fd755860c17f57c0b31accc. 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/QZES62552826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3540903fe27a52cc097626bd17c21e41ba0996fc60d8baa2a78c3fa6bc6b74. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZES72503206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb59c8798b600f1f9868f5ccc5f564bdc891bdf66551c43d851f6cee00ebeec. 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/QZES72504366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bd36035821c521eece2e69cefd82da0c3f5cdd0afbaef6b6e98ffad29628dc. 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/QZHN42530781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7510b63e784371b6aa2627b5db2d13836cbb537e80fe359341ad4cc11e9c69fc. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZHN72522561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db5f7fe0b141ec3701fe78d43efce1e21d4c42735bd5fe79bee10b5dc35f933. 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/QZHN72522562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4bc4789c2c3961c38a4fe06a6def978953daf827a2d416c06e4ad482089938. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QZHN72522563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62ba4696ba70f364863be9f38427d39e97b2f41711e584dd2f840a8988f683f. 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/QZHN72520516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212158181806e6cc2563c16145e895bf9d6d4e3a0ef1b8a90d92f0d3506ac2a1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:58:29Z), 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/QZHN72520522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3165783d5da78048c6a47fef7fabcffea30909dbc6123727337ce3f659b8a1a0. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:31:29Z), 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/QZK6P2582772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7070089e75cdccc966601f8a3350a37a8a4c098f18e58d0215782e4ae5664799. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:01:09Z), 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/QZK6P2582801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cc7f11df7a9bc90936ae091dd6f24fbd71ded136e455ec9007ad3b0a892bfe. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZK6P2582803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa069c1a5d3487f5785f59d9fdc7ad0afd46abf205ed6dfcbdbdca40c2a4629c7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:41:52Z), 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/QZK6L2589643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611fd4a3aa3da575c24f3b775d68512742d2774e2e228239d33ec1462a579e4f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:25:48Z), 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/QZK6K2517066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926e67caf80156291ed83cc82642206ac36ee13dc866dc1faf3e14c590f90982. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:52Z), 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/QZK6J2569272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1509a50ff77500ad751bb77d5115d98f3928cfdad6e5c3e3bfb0aa68cd31ec8a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:47:10Z), 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/QZK6J2564983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b0aff6aa1c012e8af2685693ec4c9b36758506809d8ee65abd392361c57719. 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/QZK6J2569291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0ef3a882ebff47fd95d3210d437c6f53b9e726a2728af51094f26cae4fcb4b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:54:37Z), 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/QZMEN2550444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf509cdd9b70d5f172b8208d013b72ecbd2963a6349d9b9801009de4ab47992ca. 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/QZMEN2550445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248d5800fabaa17f67c7e2499cef7e8bd56d7c61ffa2ca817173069336396b3f. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZMEN2553817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d491d97bafeb13987542815a048df37bc9a8fa7fecf4b08a0631057a25d6a0. 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/QZMEN2547043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b2800cb0a49494a0aac7df7e698111b97dc4a2ef34a7d6dcac8e85b9b998b2. 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/QZTB92536078.