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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9130fe281b8f4285ed93ea657646cd08f350d9c02386fa5948cd79c5e4d4b0. 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/0b9fa871-200b-4227-8b5a-6dfabb21ddad.json and https://artists.proofprofile.net/proofs/artist/0b9fa871-200b-4227-8b5a-6dfabb21ddad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blood On Tha Leaves (feat. Sirhcfrmdahill)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a19c0671b9f9eba45bd6535fe427155b14d7848c07d3dada6b81d50066d7de. 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/QZK6M2333118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39c12a99699da92f72b8459d657c01f12693df20c7ec9f4e63198acfade72f1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZWFH2315724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b96a1ab969d31ca0775e92bf314f46576422bcebea119228bd425e88588bd1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZHN32477318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3def3e3aa7f4b4cfc51d59c2347569dd714dc0cdaeb173e91b7b9d26da42f1a7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6J2412436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8124ab1c0a0ef1c9dca03ec790fb8e457184c45b676762100e7d0200f5d72480. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZMER2419473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddc34ff076d38a2481198a84b3aa575cfc071ab7da31f7086484adc83e4ed1b. 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/QZNMU2450468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4809597ba56b0d3505963d988ef920bc7de9e359d977eeaeb8967b6078550603. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZNMU2450472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42cfa530c3e6aa1a05a66e2007ebff910bd61d011e250c7bad205fc5fff9488. 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/QZNMU2450475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db260ac20c61387cb54a630a92e10c47235d85d1f43c0f18c6a47dc237caa3b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZNMU2450469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be24addb50e0455463b783db32f85e5f324d1547acdccd348020927617c78c6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZNMU2450471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa506338b055a8f02c6adfca2a5c9378532e8b0c5d6eb08c8c7429e8a55fbb8ab. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNMU2450473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41df7ce5c30ad768ede4e65fb4cfe8837b62a69af0ab28710530310560c3eebf. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNMU2450474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42cfa530c3e6aa1a05a66e2007ebff910bd61d011e250c7bad205fc5fff9488. 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/QZNMU2450475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17419074a750f3deff61dff071ff07380bcdba9ab34638827a240026e224cf23. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZNMU2450476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46c8f14fdbc0a43d0cc48f58cf9b712b8d6e99c526fee32a028e194cd7e8cf0. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZNMU2450477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa116b1d1683bf1a88c18876262d3fe5c9381a3a3b9e208fb54363dc864aff84a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNMU2450482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8361c184d147f8594be50f3e7136fcafa1b48d9751448b3ba5c478be2a2126d5. 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/QT3EY2477135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8361c184d147f8594be50f3e7136fcafa1b48d9751448b3ba5c478be2a2126d5. 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/QT3EY2477135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3361ec8efbd60b86f95afdd57d6622c2d952124999727faae1b60c33fc29df. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QZES62550822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce37661fc158e2fd97143dec98379d1266fc1ea218a8d157023d8d191046a01. 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/QZES92517631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce37661fc158e2fd97143dec98379d1266fc1ea218a8d157023d8d191046a01. 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/QZES92517631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec12621c8df530ec9e4d36ec058011e3bc210a52c1f56ec2d7ffdae935d7ea2a. 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/QZHN32559487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba9eee99365a6820151e9559bf7c1d2c408711a60fa4f7c7a27a18dd8246709. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN52592410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cec5a60a92d1d571d31b7cfcaf1708a53e7d6d00b56016f3e8f9fdf2bb22bdd. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHNC2595802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aef7b476745c36bfbabacc70916934451f3099fc06b88d9aae58048007fa4c4. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USLD91776706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d710277690f70f8c56e4eaa45862f6e7c766fb59d812a7deabcef01acc3ac5a. 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/USLD91776707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd977c30263f8c3b1ae9843928a716c719adc702e7289a7b7542237cc234e6df. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USLD91776708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec2ac4601ffdedc6c09cf4c3acaa06449c650f174871ab1dc02a13d7b4ac511. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USLD91776709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbb9c39f6b9cbd7d1a82b52f90d4c41a004b4822458b7635c60b245dc074205. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/USLD91776710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eb81e77805efa6fe6e8911e478242179276ccc2063571cd9c4630f25489c76. 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/USLD91776712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d18988f47fe31efa58cc41eb4fa0dc55b7dd2c033b23a6fa935dc82449e3d7e. 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/USLD91776713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042a568d1cd5a8eb39efa9ca6e321dd952823b9a2931356963014d5ef5f7d4fd. 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/USLD91776715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b3a05f082d8d3d028ed19157176d2f0f821908dc1deb19379bd83f720409c6. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USLD91776716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88010ccfe6d73ca2eb56d4929bf4a2b78006da1b9a236ac9d1adbefa03e884e2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USLD91776717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c1ea2190ddd57978ed09f63962dc4d437cb531e18d067bb21737f59fa919c9. 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/USLD91776718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90576cbdfa8d47c008bec9c60e8fb91cbe793f8e3a746feec15725720fa69140. 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/USLD91776720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c4356155a8e7a179fbcc66e2bccd8e18065b3f2b7e05321f2f3e232f81eaac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USLD91776721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797874eccbdffe5e384682f1c8fd4fa29df368f0a30621e077588776b884dddf. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USLD91776723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee3c0635dc72daef7a115eed97c3aa39c22966af25607a4cab2b516e4a68843. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USLD91776724.