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 0x0da24f9962aae02c00ff44fb853a4525103042f31e72e6ef87f3dea7340f141d. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95e89bd4-072e-45e4-afc3-aa4cf4e9f141.json and https://artists.proofprofile.net/proofs/artist/95e89bd4-072e-45e4-afc3-aa4cf4e9f141.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 0x0c9068f3ff5832ee73c258aebf6f8087febe1ab09050cbab45a6aa5b1149cb6e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHN72230283.
Ncilashe (feat) Ntozabantu abantwana bam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9715ca842a655a463dfe692846718ea2565bcd10472143d1260c7852a4731f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHNC2472399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3a265f94009984f75010052931672096929658634baecc9e01ee936335027f. 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/QZHNC2472400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8c332ebd37fb4432631627a77c53f9f5fda959e0b156fcf7158bcc171a9f1f. 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/QZNWZ2407745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcfe30268040147643bf5c6441c9d110b2d936021406f8f633e383d4e9e71b2. 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/QZNWZ2407746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868dd95e47d682cb3534a16a49c576525dcd5c619a397379764da3cfe9b1ab4e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:41:37Z), 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/QZNWZ2407747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989a5e6b0ddbb60c2211096b49e2dd00214a70e114fa8d4a0cc0cac5ca1443d0. 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/QZNWZ2407748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd0bf0aee0e0bcf703f270d7f02075e1f372d7402443e3bb900eec92956eb0c. 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/QZNWZ2407749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0e585c2672b3671d6a9e52ffb7a27d442ddf9b799ea1be3246516c935e07df. 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/QZNWZ2407750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9602f46ba7e5bad51e9350bd6ceb79acc74e13968e83a95a5e6272a3b41f14. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZNWZ2407751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4585ed53197227b817690553aa269fbc6f25f40069feec2739b4d11df22f7262. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZNWZ2407757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a127e438828a3aec1453ba516012e167766a218b584e63df3ada18d818ed928. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNWZ2407759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b786539c5ce2e61ce9bef84c1736fe5a0054f7bd646ab2614a34597b692136. 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/QZNWZ2407760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a677ec5c0c495df9b36db80f11215e588d120cb641fa398d23008037499c6a2. 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/QZWFK2411137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4afd24f3e854a6dbf710f5c50b881785c39e6674578caa2567ead2379f29cd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:08:54Z), 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/QZFZ42584113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe021ee9c7bb728fa06f467ea51c8a6885c81523fdb49bf47e124dfbc9f031fd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:44:54Z), 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/QZTAZ2571344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503b10ba5040641f755d25a6d74ca4666da602c8198a55e6a82ea7e4ec1a7e39. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTAZ2571345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecc3faaf49a9a33a9c61fbc1b15d69437f22bcf8126aafa8bef77740c1930d5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:45Z), 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/QZTAZ2571346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6418e34e91950ccea1558f029446515217c85c7e0f6e9e47209d970162f64d29. 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/QZTAZ2571347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa958200dc68244ad09ad7847cb1b8d24130714f682cf3a6be21f56176ad39b89. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAZ2571348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce73c68f40685fc34d60e454eb6387b726d448fdabe9287ecc53e5339d819e8c. 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/QZTAZ2571349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8557ec72f96e381987c74317f1f8c71d550de605f91a1b4401c6ca1838fad754. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTAZ2571351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea887b251781bfe9f645a1e10affdb4c5d8453fd60f87916f205353f4acd02f. 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/QZTAZ2571352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef7fb8a5ed728011d0173e5d335966acc8f13d909a82f37a39870c13b0484fc. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZTAZ2571353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110ad3056009fd33b91707ec536450c7459281e345f9d6c0cc0af6da5114b393. 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/QZTAZ2571354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9330b26a7526aa4dcde767227fd0b5ca55bb7727705ee731dea6639a871829. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTAZ2571355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf76c811ac387e1a90ce547b3a981d784c5f23eef424825aa5c70b63f913b7c7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAZ2571356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1b6390043fa7f6aff435f4d53cd740c67d4de3cae69673e6a61ff2594d2943. 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/QZTAZ2571357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165c60c2a4727a2e672e53bee6c939294179848207db16137a05dff03605c596. 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/QZTAZ2571358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5768d0dc9d727e5dbbe3d58f3ba888af2b4b5ffd03aa7019283ee31fe4167b71. 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/QZTAZ2571359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa80303a6af7ef28d3c076f836ed7b8e394d5f8095048f3e554f34774ac7c34. 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/QZTAZ2571360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19148cec3aa6c7a99112fd1ffeac1d0756efa1dd306bfc8ac644650a6464f9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTAZ2571361.