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 0x89170ac569eaaeb463080d7b39a3492bf3d643f73f2f9e72b9d2187b6fdd501f. 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/54c014d6-526a-46f8-84a0-ff0b419288e4.json and https://artists.proofprofile.net/proofs/artist/54c014d6-526a-46f8-84a0-ff0b419288e4.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 0x6c3a635a2a2781574fe69dd02f03e4ded5454ee1c993b96cbb93f170ba777f76. 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/NL9KQ2441989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f977d8745a1668ff464b104982f68c09b0ce942aeb0dc0beb600d7d6665942c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:28:03Z), 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/SE6XW2405972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce49eee8ad6d50f0471f4241e9a12bc659c9032e443a103985ae5d9dd2ffa2e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6XW2405975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411d5ee020f6fedce504f0849a3c9a7f02a50a9521c25ff241797dbfe679413a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SE6XW2405976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a05102ff23904976df42e41f50ebc9554e114590b1a4355e6a735c8c6aca5c1. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/SE6XW2405977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e68b57b7aa8fb9ec4e1179564c4ddb76fd7ea25d2a89937f58a50cdc187035d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE5BU2518904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b57d0e0edea9d0bffbd839aae57e95f9fb349eecad23b1f55ae2cf24ec259e7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5BU2518905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e6bba4ae41d284f93e937ded7f367c64ba274b2258d4509046272005178cba. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:23Z), 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/SE5BU2518908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf56592a0ef54b7f03daf7400053a3fcbe121e99cacff9def0d1149864596cf5. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/SE5BU2518909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c417abbe82548615b2c41d0390841fc1004d7556527d6e6e217b99e28198b17. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:35:43Z), 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/SE5BU2518911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30b52c19c62a04bea48565bf6073ef2e9131f58f1f922f6a18d2411d1e9b35d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:05Z), 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/SE5BU2518912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56003592edfffbb48aecbd296fa7925264297cda010e4bd7faf6736a640763a8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5BU2564798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164b4380494a589790a22d9b49a3ebcaac991b8e66333bd8bb663178b78dde42. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE5BU2564800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755ff1b2dee6a4a56c5b50b08686b9d6630565d5f18b66b0ad8e41ce7abdf812. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:27:46Z), 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/ATBK71202132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb78887a44ae0843dda813eeb75098f01218bc31583475e9cbd4fbb5f26446d. 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/AT1962500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b6bc3ee461993498663d349fe155cf4f22d09341a18c59aa5f91591d59e87c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/AT1962500512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39df4c757ed4b129145e6096882bf5145d1885645446f8c7b64ae77ad201fe6b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:23Z), 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/AT1962500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d2425b7c1338d1e064798d600099bff2a6c23c85de14e31c1ddb9939e829b. 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/AT1962500515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8205eddb55de977d0a1686f6478e3cdc06a8a74615d6050147b4b6e66b29cbf. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:32Z), 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/AT1962500517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9401d1da289bd47cd245e277604128711c75ff9bafe935c5d5eb2baaca81c110. 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/AT1962500783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd497ae3d4eac5a21a4568348012c82c43607264fb804793afd2c440227946c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AT1962500785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe39e1cdc45660f3a9916243496206d664cc6e08377f7c430b92bed55d3c82c4. 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/AT1962500787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81bfa84035c42507ee0dc0ba2721d1a1137d714483b1d5d36788546184fbf7a. 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/AT1962502040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb2f9d6f76188762e325da298ecf5b09fc76ff07771cc32cad977a392c3f120. 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/AT1962502049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394e26079ed110064a4b9aaa770f7811d299d2948c8346e9a612d632dd1bde01. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AT1962502270.