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 0x80748f07665aa6b8b36b62a8b6d29266c3dc9f9b46d377ef25203a4f51d0ecd0. 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/7dbc7301-e8d6-401c-aff8-c12c1cfcb06a.json and https://artists.proofprofile.net/proofs/artist/7dbc7301-e8d6-401c-aff8-c12c1cfcb06a.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 0xd305c659776361de756e03841502aa4dca1dbb43963f84d39400cd7b9e813e78. 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/QZEKE2016740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2fcb088248a4bd4adbbd57468fc3148cc76c39e39f0f9f8094edd6438a9210. 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/QZF452002218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfc35c0e3053a25ba10fc9d427b5f348431f4cab9cb9e366deeeea8e1422500. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/KSA002100437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6c17807d98ddfcd9c9dc37d4e686cddcad7f374c3f54b031970b6d303093ff. 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/KSA002100438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfc35c0e3053a25ba10fc9d427b5f348431f4cab9cb9e366deeeea8e1422500. 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/KSA002100437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c94117e6d98784ed59106610f3402058d27c365cd4016b7d2b6f63bc20d67f0. 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/KSA002101412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6c17807d98ddfcd9c9dc37d4e686cddcad7f374c3f54b031970b6d303093ff. 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/KSA002100438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711b201f43e4a3cfbf018464f42db053214fcf23149ca84f96647193ecd27123. 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/KSA002101414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e176dc283bcba300e6b16cb5894b77220ff84e44e966c7b15777e344f236f0. 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/KSA002101415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82baa87b2b3276627edcda4d401eb0429b22b479aac2139815e2106675d3e154. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:53:33Z), 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/KSA002201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54544143b08f3044d583fd14e0869c722239fac9adf5aaf0209788e3f3d913b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:24:17Z), 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/KSA002300489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82baa87b2b3276627edcda4d401eb0429b22b479aac2139815e2106675d3e154. 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/KSA002201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84810ccb21eb2856f59cb62a40139d566d0f2be76b97fa29d6b5e90f83561786. 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/KSA002300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf713732853210dd42ce3065106ab6da1970f9b41c580e404b7c53de93772ca9c. 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/KSA002300491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bed4c221417a94f615c3fe65b42c41214e94730d637a9b9ee3f41dc61b40ea5. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/KSA002300487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaac526fbae086e6df23323514f6fec9e7dcfb4dc9c37e88e8f9dcfbc66850ac. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KSA002300488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3172bb111c26edf850035adb3b8589437dc2b46f474193f766aa2a9aaf5d1c2. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:30:32Z), 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/KSA002202232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90f68f31fc9d3b2ee81f4bbb44710de457b7f074c0dfc382589ef0577b0c10f. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/KSA002301093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce72d4cd996c0e305e125637bbf548098f551415d60cd209edd209d3fc3910fc. 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/KSA002301094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfdd7ce5850d32dfd9df328b759fa5c253986b1d04a4e1bc3bc0bdc0dd71d57. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:53:44Z), 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/KSA002301095.
Young boy remix (feat. Street Baby, KOR KASH)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20996846fae1020a2f7f9b3c8e25e5975313da0dc64133860604237f75e7daf5. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/KSA002301096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39373077e7a854c05d45de7e4f72c970f70441ed415473eaecd53fad747649a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/KSA002303174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f4f744c3fe7ce9bd357b9b1e5b8e40f100cd425fb7ae5af7d1b2a6a04a7181. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KSA002303455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefde2d19c9180f8c97d02dd344c0ffa77fa0842870f1e0e271faf0b9e7027a07. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:22Z), 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/KSA002303456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c200d21d6ec68191907b43b20f9cbeccdf81979eca13e1298156d159ce54ea0. 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/KSA002303457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366cbdfe0d2c32b648e9971140e6b4b6c6ac84b506ba8b112db8b17aaf5ec368. 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/KSA002303458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8c0a9e60ccc676ecea45e821cff96dffaf571ce2ed4c5492d8a6c627132ec6. 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/KRA382301943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcadaa131a69e835d4b394c0f0735e8c2117a70ba2afcf2f7aa638f2e494632. 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/QZEKE2013944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f988a7bbd4335c8b6f97dad26d08f5c0b034d94ba42781708b0186438ed8b24. 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/QZEKE2013945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31938fc349edb6c49d94fb6c7f2b28ae6c10193fa1255175f8513ec90d03d014. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZEKE2013947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08150272e601de82ca6d45a34a0b2506d2f2615e10b7a8cd8f27c2b625316b89. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZEKE2013949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46b604f5c554375407115058b151cbb4c4982e8b20b962067b620d8c2fbd3f2. 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/QZEKE2013950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeb6b94eb2c6ce6ca48abed3b435da3204dc3bdc90283738e6b27bc4aa1d156. 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/KSA002301630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4456ea28c04c8270c250d27139a39f092942636ff2a45ab4a7be3f09b2e43f21. 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/KRNAR2353913.
718 (Feat. lobonabeat!, Roh Yun Ha, KHAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47dd4e1e17b7d474da750afff07c7b7162b3530da305f304de17ed5af6a2d94. 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/KRA382406372.
TNF (Feat. lobonabeat!, Furyfromguxxi, Boy Wonder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda329524e5c446da790f5e46f090a88f0da0d800f329b42bbb51b1402d2e730c. 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/QZEKE2000418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977f30eac3eac715a8cedf51cfc55648e04be89ab948dd59693c8b20c923602d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZEKE2013946.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch