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 0x14b25f8790f67c1188715ba950355d4b0eb96643a511fe9cff1b2ebab95fa0e3. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34dc24a0-4d88-4e8c-97fe-6eb7fa25b79e.json and https://artists.proofprofile.net/proofs/artist/34dc24a0-4d88-4e8c-97fe-6eb7fa25b79e.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 0x1d5f4d57e4cceb94b7263f497260b9d85ba8b34082609b8127e84f9bb3f7e71d. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:08:41Z), 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/QZN882337166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0f5dcdbd6148f435258dbab570674efca856551802c731e51189f55e36c662. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX452420435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ec0e352939a373e8b7e3e716b91e48e58ccbfb567c296218076008d251e94f. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:04Z), 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/DGA052402794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ec0e352939a373e8b7e3e716b91e48e58ccbfb567c296218076008d251e94f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:57:04Z), 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/DGA052402794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb587c7b78ae8116373e58c260e61138859286634e14cf51c1d54006869f2fcc0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA082451843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae73f91179ccfcf2bffca41940243395c5b10919f0fd9c77379ede4720d5fa7. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/DGA0M2456286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6c6ac03991e6dbcce6e25dbd84daaff182d7ae8d068f5e936b1a9f71fccf06. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:10Z), 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/DGA0H2415157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3682ddd797a671991fcf04fa61850cc1c757f84e7d6b7a7952131ba6dfd88bb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA0R2477356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b9d5feae2ac4084a7981cdb9aa55da2bee051ab12fae05bbb2da523e84f2f1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA0S2409342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b9d5feae2ac4084a7981cdb9aa55da2bee051ab12fae05bbb2da523e84f2f1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DGA0S2409342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d16eb7c6f05ae8009d3ab3a406b8a57a58614c229ad367fc121e24a647f5212. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:45:10Z), 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/DGA0T2423862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d27a03af61cedf6ccac9113f2dfac942b48ccd4ae35ed5fabe076f2ab9d166. 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/DGA0T2450502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a5432d79dc838edea4a0b1f988912c66b39ede73632fc21176dcde8dcaab4c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FR10S2548608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78474fdeba6f3217e8478d875e226918f0c5bd30ab7ad09398d96fcb56edb360. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:45:22Z), 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/FR10S2584413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78474fdeba6f3217e8478d875e226918f0c5bd30ab7ad09398d96fcb56edb360. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR10S2584413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0106815abeea50656b3105767aba68d425ddccf387a9232d2d98313f902d62f. 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/FR2X42535527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebef962823d3294954c099d8c46fcf15087e1f924dbd57e49918a8b80aaefb90. 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/FR59R2592143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7335a4b878b31499c9b25ff931cfd7c1b4209acfcd849f14bdab6e2770eb814. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ING212525538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92498d82a3d3f90cf7e81bd383526f1bede302141fd803e4663a377dcc6580f. 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/FRX762508124.