1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa90c13c4908b0a2b7403dafed5de2b5a7b32eaa1d527f616d98dbf2aec77f1a7. 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/9cccae3e-b098-4381-89ac-d58f36d5ebae.json and https://artists.proofprofile.net/proofs/artist/9cccae3e-b098-4381-89ac-d58f36d5ebae.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 → block OTSBitcoinBlock must exist at that height 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 0x3ee41e4449ab723676126ee7852a5355f04aa3876f9614dc593cd76e24c40641. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CZUM70700252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2684865c8518e17c9e62fbc00d71bdc1f4ac301e47d7dd8fd0790c16b938ad1. 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/CZA830300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d20d51968d331a460c1b69516bc7fb1ae6dd12d04ae740cf6de6bf63c3bc2b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:42Z), 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/CZA830800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf18e53a0791937a30003a1f520698c891b5dbcc599602287450e98ed678ded0. 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/CZA830800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c9390f41ef63194c5bcff521c039d488d8d83f21d7117a9e987c9fddc4a806. 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/CZA830800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d98ad6bb5def301fe85c42d16bacfd182ebb402a0236e34d3390ce9cf01e8eb. 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/CZA830800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b3c38200d9266939845a045ec8a226f16c885592bc40c7850bc5bdd1c19165. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:57Z), 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/CZA831000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d4c367032821c14fcf2f802b73ff3e4c4238c9849a7d03f0b045ffbb126781. 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/CZA831000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6283f95e1da2c56fb5d14753a975751979d9759bdee45d8b2f212cd677fdd5c9. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/CZA830500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bbbdc7133f49e0d75ce838b895ca476168ae4dc9dc1eb5d52102911a9eec6e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CZAG91800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a8213cf0c427168f68360a3f01bcc3c106f0eaf0adc7e5e217ed65ff8993c0. 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/CZAG91800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8297d3e545851533e814b24c7e85961ec9e2a3af93c25360a9d181f9dc7920. 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/CZAG91800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2dfb5110587f26cb438cc7e265623860541af65f43a2c58cecf87222e407c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CZB531700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20871c7095807e6a021af6cd2f17709836f28a245f4a2036a5868bcc1fccf87f. 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/CZAG91800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b5196933bc35833a8cec6a5a201b5d67c1eedf2068dbc34230d982bdd2afb5. 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/CZAG91800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86583678762b5662991c1e21f66556df9c1e4d956b3fd5b0faa428fafaeb5d1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CZAG91800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51855995da201723047e8433fea9d2bf284657df2b02774e25ebf338769382a3. 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/CZAG91800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474fb289a80d08b5c4746a853aee75e15afcc754be566cb04713da8d3005dd5f. 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/CZAG91800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d956feb755ebb22fb2f445e2dd4608d7d4b3be9ab6871b8278ab1f455650f0. 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/CZAG91800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b21b48d4205c2f1da8cb35f0e1ef190cac257b38372d6088fc6f16baf8c31. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZB531800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de4bf490fca451d2fc84b7ad68daad6630ea3d7387bb1df096106d36acd94d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZAG91800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9420364c2400c53cccf42fda79ef6738870a586ece1625d89606f51af11fa1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZB531800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe156a566b52df6685d2a116df91cc213729f3fca38bbdf19b612723655799acb. 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/QZN882177451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b306f9251b3c555f10adf48084f05d52314c87ade090ef247619648d453fae. 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/QZN882182959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd807e25a6e6feae49cff17cec4140d8189c587c0cd580f982ea9cd9c38311542. 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/QZN882182960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597bc8057ca790734c0a72145768004159100aa6ff07d7b956c6a17515134ab1. 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/QZN882182961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246409cc42d3c0e25f5a28a2d21294a2349d38d521404fb5898bb3f491f97814. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZN882182964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774a3734737e2314dce2e478c3ab7ce8cd333c4d6a3d8659a10038b1593489e6. 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/QZN882182966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30f4055a7931eaadcfc51ecdf66930119b1af5809f9614c7ba6e270dffbd1fa. 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/SKBW42200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367737d30ccad7c3cac70c4a2af62a8850d0f1a309a47df33e872e30a3675e1c. 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/SKBW42200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb68ee4070a113ffc9b2efde3d5c3de85bfc586a3d8be4f2e811837fe14654d6. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SKBW42200311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772b39103c21dd37d193f99439bccb5a7d221b308ad336b79cf0dc9b495e6fa0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX201716959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe9d8436d6d70ef1623bb6d407a07b0957a3e01f7c705620185bbb9b6e96e23. 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/CZH681400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a91984f2ef3c5e95a57fd9dd861cb45c60c8730b7b8220edf5604e9421d86b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZA541012202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8eb2b824bae8f3627e3218ab12b9b316c860ca68700a9976ef5e20171f8130. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX201716977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a91984f2ef3c5e95a57fd9dd861cb45c60c8730b7b8220edf5604e9421d86b. 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/CZA541012202.