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 0xa13f2267f933555febd3495c1458774e6d73ccd5940f41fabfd046fe017b6daa. 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/2c7e7066-5018-4e67-8570-aa341f5cbcec.json and https://artists.proofprofile.net/proofs/artist/2c7e7066-5018-4e67-8570-aa341f5cbcec.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 0xf827ebcb8bac0e94dc321635f98b0ddd5741bb885aecc23d8d981c8af09aa9e1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:17:18Z), 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/FR64Z1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db6148229947c7bb31b9b1742b72f2815cda77c21ad2d51d161a3315d83a3ec. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR64Z1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5819c6266cb8de5094cb3c5eb2795fca2f814df8eb4e9b33b2c3bc9a520909ee. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:16Z), 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/FR64Z1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7772a6ecf4b1b8900d647bcf70f1b8efc3194ff8a2f85797905b7b43ea6d05a. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR64Z1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdde911469dda8b0c86b3e9caed1c21d89bb22db37451b27540387aaecd9719a. 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/FR64Z1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69d38e317218252823869dbbfeb8807464815330c951dfd901556034eb06e26. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR64Z1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990855715a841c493abc99fa3bca37c8fc62eabdf945c86a62cfb93282369cc5. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR64Z1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056bb7ebc5eefcf91e358ed40b6b149073a7000883c1530b7e19a0b631405fa8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T11:57:28Z), 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/FR64Z1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa19ca640b60979d6712cf2428902588976d4242ae2c1e6bf56965abab0bc78. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR64Z1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11648065126e1cab1078ed92029346d74b300027a0afb851e93a8df6432aaf3e. 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/FR64Z1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd89d0edac6a06b9f357f23789f968fe7ca3605a6fbc349078e3d0db137e75c5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR64Z2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7580397a3076895b1ad8ec4b2c84aa748062652a5c22acc9d49d434b6df19b25. 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/FR64Z2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9f4039c7bba53e7c413199aaca29b0bf2e79b3c99712a3f8b2c779ef46a655. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR64Z2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf65d71bd2de4037df29c169ae26639da2f40b7c8d9f5d20c40b0bbc9e694f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR64Z2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6781d9119245a7049eb0671956a67968a5b0522e845fd3392d2a11874eb7d284. 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/FR64Z2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da6383494c372fb565310b081111b0fe7345a55673dcfa196fdd5aac79db83c. 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/FR64Z2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71d31c1731dc4ecb1215c626cb92353e462ad909693baa4fdafb4023b5d5f6c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR64Z2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be44a6bb444fbbc7125324164ad6d44a4389650ea2c0e406defb8cf9dfffded. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR64Z2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf5e5eeb1860697ea52390cb5cc4493f402f42dd16bb57ccc0926308d0bd5de. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/FR64Z2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e67521593561e5db3f7cfd769a1fac128fe2f5a01bd18b6c271ababf2340c1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR64Z2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ea2d67728a869d1c7a1f390acf332c718e733a1d5c1e2ba005e76c4d907e3. 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/FR64Z2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6692296ad4bade87752470df3d5f9fa1642b4f472db46b0def0e73908218b2a5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR64Z2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39fc39151fb64a5fe979df511c5ccb753243125cbeb55b28fd4d4b4d7926689. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:16:37Z), 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/FR64Z2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be44a6bb444fbbc7125324164ad6d44a4389650ea2c0e406defb8cf9dfffded. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:18:46Z), 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/FR64Z2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38aa083d3559b91b6d676b1f21bd264009cd499f72c5e43b8ceb0d7589e605e. 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/FR64Z2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ea2d67728a869d1c7a1f390acf332c718e733a1d5c1e2ba005e76c4d907e3. 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/FR64Z2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6a0a260c2042a4af5f652466461490e850645326ab84ee4659fdcea78c524a. 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/FR64Z2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af533a8bf62ab2ed2cf4ca1e1ee17f489b4a9cd6705f6aff577b8fb8cbf169f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:52:55Z), 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/FR64Z2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa438ec12f3a71d5a3d595ec87287a9de4880eaa159c046ca8fd1dabf8ccd9b. 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/FR64Z2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49be5e82d9f2310ba9321d2cf534b0cf6ae9bd23f6bed8f1c14206db434b0553. 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/FR64Z2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b157fa09ae794560ab99b1a86070dfde6240dbd716f4769bd5adcf27d11dbb. 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/FR64Z2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbfc7bba5e82f883c2ab6d5aff45cc751404c9258a0a27649b495818a72b86c. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:17Z), 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/FR64Z2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6692296ad4bade87752470df3d5f9fa1642b4f472db46b0def0e73908218b2a5. 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/FR64Z2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10831a41ccae0f373d5803eb3d18934d6eb58bed1c7044c9eaa4851d76c5c42. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR64Z2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e7b80924ca31a8b3e9467631b6f5bb008231d33c136d479cde1e428eddccc7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR64Z2300011.