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 0x6cc0306acee0c004df11c3c698744d7a10294b2f432db1c04dc31a47431f3d06. 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/30d03b18-deb4-4694-91dc-991a5e90ec29.json and https://artists.proofprofile.net/proofs/artist/30d03b18-deb4-4694-91dc-991a5e90ec29.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 0x308e4cadb3aaa9a59de6589fcac2ee2800d927d59192ca9d0b5e53572190f8b8. 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/MXD782500353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65156a8e20578b4c2a50337ed3dadd4844c69b6fea562ac61c03d1b415c2bb4. 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/US7VG2596772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20192db1db2fb2723b748f95672afd0e45a13c3df7184335b4539b41535b8040. 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/US7VG2596773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca3cde274db72f59317d0a43c25c41f9ececd741268ca2de293b313793bcc15. 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/US7VG2596774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed8c5b11f4f902ec8292d171fadb03affaa3038bacffe0f452642e49dd91f4c. 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/US7VG2596775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccde845d0c3b6153659dd754efe4c31d75a6ee2ad17176f5273cd9286d0f6ec8. 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/QZW9M2434126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cd5b646c2a0b005943d67838beee50635c35426c86b24a2116c03599378798. 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/US7VG2596777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aa5e8446881aa235172b30b73d9ae12c62b9aa6c3f99659962e1e8ecc9acf1. 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/US7VG2596778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c785bd9e92124267efe929b0f08ad5a99988c278ebd903b9585377d00d0e78f. 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/US7VG2596779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf422686501251a18982312e8a6e48aaf754ef21f7b1ae339a20bc1bda642af4d. 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/US7VG2596780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce3d69100fcca08e3ce57301ad747a56dc326996a5208863db078e27ff09179. 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/US7VG2596781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b29c4aed91afe46fc3b8b4cafdeae3f794a5edb84e00ba90f327c84e7fd136f. 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/US7VG2596782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238787c29a5b836e5d6a2525f318aea591442e83250e8d6d6afeb157c66461c9. 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/US7VG2578262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa099ec799ee2e10cbdf5ce6cfa31532a33c8e6d13faed57fcd98baddbfa12620. 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/US7VG2596784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac011cf5407cb4ec9c5b2d3221227588765f5d448d5d84bba944f3d2a4018f5. 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/QZW9L2351972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3e9bf62d9a74ce857ccee1f152bed90d104b58ec6fdc057d5a7cd3ee5aa333. 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/QZW9L2351974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f7676134a4c5858ebb2f89d5d409726f6d31355454fe25a6e35c84e73ff231. 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/QZW9L2351975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2ea961b190861cb69acbbf47ac21a60158de67bb501c7b2e51b9146a7d9770. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZW9L2351978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95049ae3e5974101854841de6544f78914651313c45ddf08123fd44c46abd7b9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9L2351980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda013d85bcc33ac5e5ba3fdffbdb41fbcdbd6777a4d44399abc1ee79de2ed369. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZW9L2351985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e61ae65360fb82ce7cb8d622720f1787611b72de80dcd48e8289f3d4ac6015. 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/QZHN32557654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccde845d0c3b6153659dd754efe4c31d75a6ee2ad17176f5273cd9286d0f6ec8. 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/QZW9M2434126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46deb06c2087028fbe4ae0e4e121871c0b1e14db9e73229147b5de9312b7b101. 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/US7VG2431756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3610074de606ba8d4467c9dae446de503610d096169645670b3d6a8d5e1e405c. 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/QZTPX2193211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4197d743c3ff546af4832406e239496c6e147ff91ccff60347ba37687c51ceb2. 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/QZNJV2173323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f4f33657c62d001fc4ad497edb04e93db8d54c52db47137ed8d2666fd4caf0. 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/QZPLR2458363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5403288c66a21eae5e554a86e8be6c8d2987bb4f9f475406f54957e60540d24f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6G2520457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7666693d898f3e131e5d6c935743aadfaf1e9a9031dbd3ed4520fad5bb0de5c2. 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/QZDFP2160372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6598a30d9c1c5ddf1553ec996c7e7705df2c9d7c75d77f20668c43c9abeffc. 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/QZDFP2160375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5008ea5bd88207276dfe4a92b5ebb99cc753ad7cd366c7a48ea4160525e3eb5b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDFP2160376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36763e95fdea06b8ba0621278df874695ff9c7ea3d03ea74f9d2ada2508e566. 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/QZNJY2117444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28b231ed263c3ba8691af8bfb8dca96aeaf0dbbd18b92fa3e7c0a64d435786e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJV2567634.