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 0xdc03dcad57e7643d470bab38ba5684d9f4ebf8c06558fe6ddcb46b10c42818ea. 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/7a6caa75-4f96-4792-b22f-ae16ba5a6e8d.json and https://artists.proofprofile.net/proofs/artist/7a6caa75-4f96-4792-b22f-ae16ba5a6e8d.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 0x43a8d33a9997af01bfb20e657e9f07802279b5e25fa106201581f1f3de353dc2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USYBL1200795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65b3ea707b807fdc438c15c050819a9a586fb5b20962bf430d47506be4a3527. 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/UK2HK1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea426ee44edb92a521822ce171fd5c94648f3fdd25212a6c645951340f41e8d3. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:57Z), 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/GB5P51700207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530479c8a48b436b58034bec9ea51b66d641ff21366b35b65abfa721d9edb767. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:09:40Z), 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/GB5P51700169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbabef10e4c39ed01d62f155dbfcc175a4f7eaf0c679501bb497166245801116. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:41Z), 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/GB5P51800343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc278dfdcfa648008dce4b8841fac8000b164a82509c3297a9bdcb4b3da6a7b5. 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/GB5P52000464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0247bc50394df64332fef7e298315524100f9db11b1f5ee269ba190c68da574. 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/GB5P52100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4025665ef7eb53c54b969b959cb1717bcfec387aee82792c8769bfde505100. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:49Z), 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/GB5P52100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8651bfb5b181b2012cb8b7211e96be8f988a8ac810dfd8c24ffe3bdf8e9e8616. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GB5P52000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582450a06ce03a4175f11f71f70fde4d927a284420b3328fc9f66b061dde6b82. 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/GB5P52200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb97dba344232e48af585dde09ebd6a45ed6df3125bfe46b81779c6b282d7d9. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:48Z), 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/GB5P52100311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d0f962fe84e6c424e4030a25b5f06b2590798520316f63774e1c74b03d767a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GB5P52200542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb99e720a0fbe681c09292ba27e1b135b62e9a5700f653d12c078a06cb375db. 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/GBBPW2501658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f8aed0395f65fe995c739ebee6875789cad7e1c209d06c84e3e5248a6de4f7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:58:12Z), 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/GBBPW2501656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff58903e423f00c13bfbd7c731808472d8bd6c272a195fd0ccff40e6ca8628a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBBPW2501657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb99e720a0fbe681c09292ba27e1b135b62e9a5700f653d12c078a06cb375db. 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/GBBPW2501658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef6e12d3ff6baa7f22f729f0a322e0e5240dc1dd838ffe2004d731ad0fbe752. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBBPW2501659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b4ab16a2243b08f194486c896bff59740fabe2f446f6b1b2b57e64211c4a5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBBPW2501660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e412b56ebef819864ac36ecbda279531abe27899e0bfa83484d3262aa4937d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBBPW2501662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fea4611138b138d1730aabf42981bcd5911d1e2f8b4e0292566c699bfc5c1a6. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/GBBPW2501663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ab0fd885ae222c529658c653f4a26f41444005a473eb4ac480a193538998fa. 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/GBBPW2501664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc12d9ae93a6fc5cca93ecb668a6c46971b626ae5c2c35e919c245180b0d758b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBBPW2501665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cbbd32c83e92f2a20f516241309d38fa6602e5f282ae0aaa86e9399c923716. 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/GBBPW2501666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7472cf99086a971460fa33b4a43c07ad6dddbb5242c703e4cf51349e1a964d4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBBPW2501667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef6e12d3ff6baa7f22f729f0a322e0e5240dc1dd838ffe2004d731ad0fbe752. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GBBPW2501659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1877509376f0ceeeb735592114119bcd38a79e53c20bfd98a37d971b6faa5837. 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/GB5P51800377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f44259f25a8be4b720f08d1285c6faaff39065083f3ca3ff1e03d38310607f3. 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/GBZN81300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06051ea6d72ca854ff07128463d827485ddeed08e238b84a9934ba3a25416009. 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/GBK3W1000212.