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 0x8f9fd65fcc39e9ed7fbe81adbe7ef33bf7e5df8fa43fcbca39ea39e0f55810b0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80105ed3-b4f4-4890-91b9-210f7901604b.json and https://artists.proofprofile.net/proofs/artist/80105ed3-b4f4-4890-91b9-210f7901604b.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 0xb5ef7f78940cd7aa5dda5ec969be8534a0f71b761ae07c93c3439e95ed24ad02. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPPC01902503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc867283482290453237f3a993e19a01536a79e77b58fdfb268df1d1619f19aa8. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/JPPC01902290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239abc584b1563cd3fd63a5002fce86e2fe3e5d6d7e5345a469b7323e1e41763. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:01:59Z), 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/JPPC01902530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcce4a3529f1c0614ed2ebcbf0762e39fe95df5da4cea0e43035a0341486d64a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:24:41Z), 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/JPPC02000892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554cfbae30a5bcd93da994a75693f5d4443156db39245c138d6c7927dab60836. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:48Z), 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/JPPC02001297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9747d00481bec862f1e3ec363862896cbb440fd59fa6ea5ccf107607de405d74. 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/JPPC02001877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe154837a3cb3b60f17c725e1c72a3ba9801329573887dc6646eb50f610279e3. 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/JPPC02100272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f8b046c3bf4e6b48e254691727593e45277004ed5171afc926586bcd6fea31. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:48:01Z), 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/JPPC02000534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5900a1758e8b4de21a155aea0720f35824342ae82c4fbf97066120918a4abab. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:34:01Z), 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/JPPC02000811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d7ef5f39294966a84f7679cfd04e04275ea6dcaa3c2ef0f5f153b6fdaec82b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPPC02000784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554cfbae30a5bcd93da994a75693f5d4443156db39245c138d6c7927dab60836. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPPC02001297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c6c466b9daa2cd176d47e9051012d15e70eaf363f2ece51cc925720340ac2d. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/JPPC02001391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9747d00481bec862f1e3ec363862896cbb440fd59fa6ea5ccf107607de405d74. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:00:06Z), 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/JPPC02001877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093cc40086a2ab0bc5e9453b36b0cbea4c901bea5692f0e70abf96c8fc3ba717. 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/JPPC02100789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a8800377aa0b78cb69ce62ef22568050e80260e5475a2341e9901fb3b161d8. 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/JPPC02100856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe08de30b425847405debe2a77376180ef15e4ab4b7ddb0681371e992487afbb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/JPPC02110143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab75db7a7bba810a1d6fd0e95d1b7d0b7dea718344103fbcb854bb33bdf53aa4. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JPPC02110401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7c9e6641371e0fe35d43c00b0b9b71ac207745039fca220619d9bc73b4d1cb. 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/JPPC02110691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d9a2266052b943cf6105583264e25f322f374ffe11d8102e74b4844cb6c690. 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/JPPC02111159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed67c59367a29f36dde01e1810183530b522dfbddda727d12e924c043e4724a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:01Z), 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/JPPC02310193.