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 0x56334e05eaf1b938c226909004a3690e084959b363bbc4493d3e258b5b452ffd. 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/4769217b-33fd-43ec-89d6-ba0d50ed323d.json and https://artists.proofprofile.net/proofs/artist/4769217b-33fd-43ec-89d6-ba0d50ed323d.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 0x6528cf521ee7e542fb514d625682be2dd4fe330956ca130fa721073f38d98924. 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/AUI442100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79327e7d3c654149438b29e1a0447353287227b94d21bfba34d8e0a8af0e4f21. 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/QZK6P2038545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3af31621a344d8bbb54e79e3fd5aeabc4763ef252b7b68507beb1df32955f5. 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/AUI442100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4288142e37172a16c20b6adb374ee4b59d45692bed550eacb1c5d5a4caeda2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUI442100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8e8ce44c4c8e8e68c79959927dcf56bca2672169593d0c3b153d12d9eedfd. 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/QZHN51975408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7dd378c649b50b0ed61e316fd6e1861a29ebfca903dc3b743d467339c79148. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUI442100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89bd660bd028ef9421bf4d22438def835b2aa3401defe939f35ec21bdb9da3. 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/AUI442100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5d5172262b772ee76abe3d5ffdea3f52d9969d77666ae1fb4d5066f1696e76. 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/AUI442100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5f08274a52911d92f9a83611163649a27a2826293cd310bf8f64835dfb514. 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/AUI442100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc691c726035bc1f2e8bcfd9370e090c4a6c2c109fb41f5c4eee89f33b4ab070c. 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/AUI442100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4083250ae424ae2b040551c2b627f783fe47c99d2d7312b28b7c1749891a3d. 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/TCADQ1866274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37693f3ab641d557e8c46ce1210890a1ad89024595af7eceb35e9e89892ac809. 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/TCADS1809743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5efa952ad14aa02042d414e66ea65036ff1b09fc4e9da6c518e7ac50cf6bea. 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/TCADT1815585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5761d54ca317634e03b8dceb4c03c3348c2c81d03d2bd9e10759c84053e8b3a8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADT1815586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994cbe91e30012ccdb2fdf493fabaef58a89e0740ba66f52502773bc92d95f8a. 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/TCADT1815588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6ad70e110c83df5c90d32b682d924c3deb37b7e95db9cf71455e325a116cfb. 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/TCADT1815590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a5b179e1168fab241a24068cab17219969f180b4020ce83aa072cbf62d543e. 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/TCADT1815593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108b7aacabe74c2620d9092befdc16a5e366e60a6be66604751b08ab4f55fa63. 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/TCADT1815595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b90230600e60b42ab4c3b51b141a0aabd1f042ff6906054862654057b2f9d7a. 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/TCADT1815597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972ff5f48ff88e1ee41e11a9b18fc2711a44d3f93fa675492934ae553c20b166. 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/USCGJ1757446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2421962f515e415b07a382b0e04833c1c3b6e9fe4e05f9921d2f73066e234fca. 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/USCGJ1757448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d682154aa3680dd7f28a8a944d9e45a170013a70a0509359b021f3f903c135e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USCGJ1757450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812ef922a44b59684b93ab34b3ab4f2537191c4abdd28f5d423dfb78cdf520ab. 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/USCGJ1757451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa802beee36158038452ec6078f3ac60defb6f054bd234eedccc8d38a7215b4be. 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/CA5KR0009938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79327e7d3c654149438b29e1a0447353287227b94d21bfba34d8e0a8af0e4f21. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZK6P2038545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a17a3f076e55fa28bedc2c8051c67be0464b9301488e719b8821a1bb16a1167. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGJ1786044.