1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe154b01393212839bf8bc86555572c14d3d6c9226a3661efced9f44e7ce00c65. 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/370edf41-0710-45f1-875f-5011314562ab.json and https://artists.proofprofile.net/proofs/artist/370edf41-0710-45f1-875f-5011314562ab.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 → block OTSBitcoinBlock must exist at that height 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 0xdf21744510dfeb7fe7feeaf0cc24fd317faeb6a8c3e86222c11d4ed52e6da659. 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/QZK6M2216350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de322830f51d68397a121a12bf820c0f9a2a87cfa9464ea2d64dd3b79911c51. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAT2280940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5140726cab1833e9e585401fcf3ac9d16bc4d2a77b1042a7c05db7e72890ec. 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/QZTB82207948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e81bce9bb4aa5afcc58b4b0f7b1858421c3398294bae9b2ae5f61765099d7b7. 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/QZFZ42383231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdd8b3befb2cdc886c49c236f44ae3061a0563d5660555b8a2062fa67129e89. 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/QZDA42376096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05afccc356de8cefb577dc288487d35d82f9d3db5e8d174cd77b3479fb1958b4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6Q2323411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdb5ad06fef90ba51a64e8acb72a5ce7afddffdddf7783dead2ceac848a149d. 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/QZMEM2366294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9895baa3fce0d495cf19bf69c6c22904b6d330eb1beb2b0eb17ec672580022d. 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/QZTAU2330008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f60a26163b0bb827db01eac5efc1da74fed19399647fe4b422374ebd492995. 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/QZTB82350524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c28f7ffb4babf4ee07cd6be8b991bf20e469e5ac29887337a697c297d9ed69. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZFZ62421124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ad6d2255579fa33c02e453b1b5e08ad6ac68aef42312188e196385e86ee3ab. 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/QZHN52409768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815795cd735d868c3ca6606556b1141113f91a71ee4541eba4d163564b593302. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:50Z), 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/QZNWZ2429181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468da3d64fac136cacd992eeece1a0c89b8c3196accf54a4b40e58ed18fac8c2. 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/QZNWZ2429183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ae316781cd6b2bb6554ed2d489f9ac63aba6767fdc9b89b7d7836a36b6ccbd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWZ2429184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb20f588e38e982fff7e2ef02ae5857b9a9c2bc7c006dad068dc8f2bdae5210. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZNWZ2429185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4da43a6cf7a89e30f9890d341caf4102995f1e5f71e45ddc8f13b0a235aa3b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:19:57Z), 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/QZNWZ2429186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8e343539db4e110653d41857d92465e5f376744004ceb905c8afb5dab95983. 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/QZNWZ2429188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ab79995b79cb924fe67b2b640a34ac0055a264729a67aed34ce9ed6d9f7e35. 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/QZNWZ2429190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17080494e2ee53bc9c6c9292996a0406b64d341b32acd4b51cdeda4aff031579. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:22Z), 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/QZTAZ2416517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a843889b6c790f339e1fcae840b36c8bc776c0dbc67b11930dcd1e488b77122. 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/QZZ792474870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0a43762ce70fe38515a88fb8b3564ec10478eda0630bf192334cce2ea082e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ7U2429407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324e9e438b8eb97e06e5f952663bbb568ad4182e88d829041cf0a74ef42f0cbe. 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/QZZ7U2429408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc22b52121e8f4be7cdfe1c3557703213165f6552339f836abf5ab13cfa4dca. 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/QZZ7U2429409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45fb7ad2e52b9459db72da2d388dccab7117e42cfd87b40101162c6a78f91cd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ7U2429410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168ded7b2459cd44ddacfc9595f48ce9a1b09e5e45481b24c1b0af64879d3ec7. 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/QZZ7U2429411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684041135a2b0a18951aacd34910b03b3f7b9bd08029dbc4d2be6c7eff346f1e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZZ7U2429412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4495dcb0125cf8392ff498eca70afc27f0a02f46cde1a1418fb3eb31e1c7300. 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/QZZ7U2429415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8833c6f59dbd6d7a8624e62359be32be4e1177dd8ee52ef54cc0fa3283d46c6. 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/QZZ7U2429416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a843889b6c790f339e1fcae840b36c8bc776c0dbc67b11930dcd1e488b77122. 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/QZZ792474870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4a3278e7a85d9dcdf9efe253284cb12c1d304042ad626e5fe524f7776fb2f1. 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/BC6M22506636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66aa64f02584d0b3f52865b0c5462c5bc5a183d50296980539a99e15e6f7b2d. 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/QZTV32506676.