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 0x39d150af12e8ca4fc5b0da4abf13a1c9512bdb285ffb68dde76cc6ce33cd7401. 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/9c6d446d-3c9f-459f-8407-a63f4c1f937b.json and https://artists.proofprofile.net/proofs/artist/9c6d446d-3c9f-459f-8407-a63f4c1f937b.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 0x07a4b03580b18de30b0cecdd473093c6a303569b90e03bda1173ee1d34a1ae65. 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/SE5BU2493498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177675421c194ea75cbe7af008a6126a5e15a57e968316d76f6dc92444ba7b59. 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/QZS652488065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18afb26856c95a20240207a9077346f16adf6da7628569f4a14bbdada7ad0f2e. 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/QZWFM2333677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d50309e97cde3ad2ba3cf37f5b07aab2e5b47bf1f9eaf3bcd788e952f2bb74f. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZNWU2413133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b172a0ea94dba76fa378106d9dbd5e8caf6c778e7ef83a761aca985b622cae. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZS652405983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99cf3cf0dac01bdb24ad966e314c2fffeeb2698ceac4b62605ef0214bf717ec. 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/QZES52499064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004dbbefbf4f72fb896ad05165be200fefe927169379750cd40d7ce7d096cb22. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYX2473262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64d1ee008c7cd973d5b543aea452ff8b7d7352eab6407ad49684686abbbf4dd. 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/QZTBD2347689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac828065db0971f509fc6813738e7d4dc6feb265145af604ee1cddb99756d0ee. 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/QZWFG2313564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05edfa2df693557fa2d4a33b1ffb4152dbe623ab69332bc2fa86ea16f617f935. 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/QZTB92394593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526fd631261598f1c04bc5d4666a1122a75c4afbb7695c6b57c7b0c747ea10b4. 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/QZTAW2374146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f0cd65d2771c14e3acee306ab52d34da24f9babca4975698a184051616c7f0. 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/QM42K2326993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa484bb2fe8de45a691597d733ee650b02ae55ed699c646bc963f1ed9fbc08f3e. 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/QZMHL2377363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d3930089187a9e558e57b3965fc63dfd52aa661552c4d361f325714d37b360. 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/QZMHM2371239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9edaca6c304d1fc772a97e83eabb639d9c42d8b8004ce6924bb727273a69068. 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/QM42K2385538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6a8cd319e28dc9c134c60d457ac9ff48f10ee7f7ada628ac2cc25deb5f24d7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHP2300425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38eeab74ddb9415042dc2e721ce2143231ef6d0603c9d94405a163fce3c8a64. 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/QZS652362524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb06aa2f6aa6f2ff07505da0414c595e42d0dbf48418ded53ed874a357f0560e. 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/QZS632311505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda29dfb6fe48838c5786a202f95b4ce0c699475ec59624ae835745c46f31ef7. 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/QZS642399091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e03722b936f96d2102730fef29e80dc8da066432eef8311cd90baa4f241ce25. 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/QZS632350500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0616f12c0d7a7eb494799f4eaa9c2c28a9edd2540df51828dc9f1702d24457f2. 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/KSA012315838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcd9466434de5fcfef1c119819ce7ea62a4b62f34b180f00238f30f89c9e862. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KSA012315839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77de7c1a869568a3343d3f978bfaca06c2cd68897e0232c19bc3a6ca37491f56. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTBA2269057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd7a495545cd6f6d2c4df4835204d81252bc5b9be99ab8d7315d6b2686e7be9. 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/QZJRC2227322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2297e0761fb806debf78acbab8a7168bd6ac415d473ddb15613ddd5ad62f397c. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZS632414770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d5ae630d3d44fb233c6aa19dd53d373d7b955cc8000d22c520b7a9317a85ae. 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/QZS642448203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cb25d243904ba5aaed0f7a396603bd9e79c6507ece15b9afb7607d7e2672fc. 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/QZS632453957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128de54ca731b329c1bf8b50667722efc0e7cb7ae58ef845f6252556259fa6a2. 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/QM42K2411187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf378bed95d8e4190fafa3a2c3eef266f737796fe4693f64bf2cd0c91ca578051. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZTAU2342603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2945481e420301b0fec9aba7352481b6d3a0bd2ff9067b09ff9d4033b9046df. 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/QZHN92492229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adbd3bb9db0c2889b07f6fcc4fba5905bbfd619d74d008b289c1a675784320a. 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/QZTB92483188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c62375b6790289997bdcdbb255b7953ac68f61c4b031d22eb62112f70800169. 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/QZMHP2514123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5199c7e8dacefb57434533e1e2f2b1c271f1fced1f802a8f4c8699a44df57ce. 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/QZMHK2525189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18c7ad4c5d9366e43c1eef8616f37f5d2c90fda2e560e4cb76623437a953ac0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZWFJ2407912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb527f7af7759ae5f91d006e488cb08371a6b6d009d830f882b180c4eaf5ad772. 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/QZWFT2435265.