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 0x2f8b85ab6973c92360f2e482555042c1cbc56e06945e44175387fb3a82fdf03f. 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/457c3e8a-1639-41f6-89aa-bbde9d9cc68a.json and https://artists.proofprofile.net/proofs/artist/457c3e8a-1639-41f6-89aa-bbde9d9cc68a.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 0xf78735dbb8165ae4a813ce69b29bf9b5401c071bd11acc1527d12fe6a096fe72. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLZJ2237024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af6613629d7940fc5a158ebcdc6b0228067361c08650f4e1e90298a6e4d5e9b. 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/GBWUL2194088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d23cc5408fd659114b5adb6721281532450971831bc39b4cf66c300af68f28. 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/USLZJ2237039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7565f9b0236e915fe74ea2033f5763833cfe9893474ae59aaadc1964523295ff. 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/USLZJ2237042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fe6e94208aa75eb6641611f1cc0119a8f58581375590c9d5bbff7c606493bc. 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/USLZJ2237044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34c841d5a6fdf9f5810745f2fc52da4d491556ddc4cb76c8572a9e8dd4080af. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLZJ2237059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ff61ea1a1b834d80075a63e02c67bc1838f02c3d7e776f3266d4b4a2e4f847. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBWUL2046589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05898431161530c12293e2e5a4c98bcee10ae78c6e1c9b4f07bf53d920bcd9fc. 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/QZ5FN2137733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa70434b23b7e8b36d0bc8dd7ab2037276673f7e14efbd392265264d40ae7b49. 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/QZ5FN2137735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a454cb723ec8bb3d38a135667c8b2fe12518ec33c9e6eb88816f5571d2952a. 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/QZ5FN2137736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d7ac12874c9423544e157fa393e5a3039bd5df1c8cf2d3676a2dc4f80e30c8. 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/QZ5FN2137737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acdc8ec0f95e3b50fe4302667525fdf3f4a6e3d881f1e090779d75b295b5779. 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/QZ5FN2137739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eebbb007d180e9442b6fbfb4dec48d1afd588de693d28782fea2aebbbbfa05. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLZJ2004004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9f2e30707ea84382cd4a254159979a27debb83d5166ba9d812e008941d21e8. 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/QZ5FN2137740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88bfd3d8a5b2d26c1c5f17b19e92ea9166c76154c34764f246063f240498767. 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/QM9AA1822961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbf2c64c0b822fdf3f03382ae8ce6cc89fd4bde8f5250d239b10f87b26cd88e. 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/USHM81690554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a96a9f7ca0d24ba0018e3265f94aca0138a18c1fb3fda45ee28ca1a3de2768. 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/QM9AA1822962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7050109f496f763c1a6ebc3600cc0578f63769a57f03893c8ca21a9ec472c55d. 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/USCGJ1459145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9a679004411ee49b31873f34c92150863dd70328204a779edd7a453613cc07. 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/USCGJ1459148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eed92fd5b5ce89f7c04edce9247924b245fe00499844ef37a2817485f67891. 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/USCGJ1459150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ba7ddcd3e155f7c0b3eb0c2b21ac1d18dd541191293e568027586dbd70d69d. 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/USCGJ1459151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ba175d561efe7d50cced34fbf7c1b08616071189e84f9e34efba33c75b491a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGJ1459155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55faff764f7d56c5c8ffad0612ba1d4976bd7d28e4b327c2576d5db5c87db47. 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/USCGJ0575858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2094f63b5c7d320e4a6bced5dc290c27303fae352c7fbf4fdc614a2c7fe4ba01. 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/USCGJ0575859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb3d08c7cad24b160cfa51cbd4a22e1ddef14ea6c7e2c910f7676302c4a376d. 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/GBRKQ2417757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3e0eb69e1d890eb8eb9dc420fcda008f33f7b5a674fc25f4a1745d87031b30. 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/QZWDE2308105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baadab24ac7d2934da57aab4255eb07439117d0d1894ac36b5f005695388f26. 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/USLZJ2328067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af6613629d7940fc5a158ebcdc6b0228067361c08650f4e1e90298a6e4d5e9b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBWUL2194088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eebbb007d180e9442b6fbfb4dec48d1afd588de693d28782fea2aebbbbfa05. 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/USLZJ2004004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ff61ea1a1b834d80075a63e02c67bc1838f02c3d7e776f3266d4b4a2e4f847. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBWUL2046589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7306118749696b10b7fa0000998d73ee0f6abd9c772527261d034150b18e06d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USLZJ1987140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6efcc9da88f3f7b26f886da867dc692f4d2ac1b139825f6e77622761a8c6000. 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/QMSEY2100811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1d7282c610d88bf18e1632711d4853991c29f98d64c26f6fa6321cf21eac20. 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/QM4TX2280956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e0e0cdecd062a06f2f2052b8d17ea0d7d36716e6e526117db08cecabb4e368. 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/USCGH2187526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449ed21ac41617dee70db50601a949023f9cca74e1cf81c407df462c286148c2. 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/QM4TX2280959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e95019c81a7aee2be3fa37decdb42aa6113fc98bcf72f345bc450908e6b6bb. 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/USHM92003722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed4df0e919b40932c8730d5a0ce2b43706291bc49fcfd25d1a6443a6200dcfc. 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/GBWUL2519987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfdb71266ad8c1ae1fc140b7be6f950598c24d13b84f1fe1577cfc8eaefb1d4. 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/QMDA62314056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd72908b8d163351e5457b8b1509f463c93b99d6c27d6eee2e8c6985e8bf54d. 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/QMG552100117.