Calum Graham is a Canadian fingerstyle guitarist and singer-songwriter. He has classical guitar training, but uses a percussive technique. He has released four albums. When he was 22 he was listed by
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 0xf4d2f58e518f9c03a3519f74e7765c8c19c500b9c27b58ba8565a00fb4748e36. 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/95a82ec6-a70a-4b99-9d3c-fc0d461a2bee.json and https://artists.proofprofile.net/proofs/artist/95a82ec6-a70a-4b99-9d3c-fc0d461a2bee.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 0x815a7147dc7a7bfd48c0cb106c832c731d9f769c46d4611331bb81493316d668. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/QMFME1339619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b64aedbf4bdac47e7999fe3a322cf5c2455d02ee3d4ffdc86b5d7d916aab33. 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/QMFME1339620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe42cbe6c6d37018a2200a3b0e22cee4929555cc6522d82d07fb6ecadf8da05. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMFME1339623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aefb87e440afd2314eb02970c1537526b9b57e7df888cb10b818987a0174b69. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:35:13Z), 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/QMFME1339624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f957e96879024893b1b402f845f075bd23ccf305e19f62a28c92e12de6f596. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:43:47Z), 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/QMFME1339625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2706f522eba01001e9e46b0e15cc5e5ed557080ebd27f3403307e55eaff264b5. 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/QMFME1339626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef82e75c591b189bc90a4ec00820555c0ec0c76fce3f6c357c5664241033eb8. 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/QMDA71335255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893944e03bd32e83e5a0a807bfa170fdb3cfe74d0ed193dd3526b28c9f34c031. 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/QMDA71335256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf451c52d56111423e3b2196f4435bf16603164d65af927b0be6f483762406d1. 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/QMDA71335259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90392810819fc50ee8a540201a54128af7c61ad03da8d4f930ff3c565b0d1494. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6N21433312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb578258df034556235d74f719438967607da0be7a32bac3ae828ce14248d9f22. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:32Z), 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/CAC9I1601004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1f450d72c90c7a69168f46b751b0b5b82d1acb26d25442796499b19ee5b8d4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CAC9I1601005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a8e0c2a4b96245069a26cfb0447cc7c93401ca6e5feceeb9480783f468f5ea. 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/CAC9I1601008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af763b3ba38a86d192f726379a224b0993764440f3305a7a600c10b5ed079d7. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/CAC9I1601010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1fd9ddb5791a0fc2769e74a90bf39b24edb866a3dd0d8af098433567769d7a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/CAC9I1903001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e355e710091ceeca47955f81ea124224384530a937f30f3f2eda4d4982b7533. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/CAC9I1903005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2be47ff5b38cdbab347c452dbb071d2ca0819821460734d524b631a4332ea2. 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/CAC9I1903006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e179831ed4a218fd8a9e3619d07622bb44922ea9954851f97a711eedca46aea. 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/CAC9I1903007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2b4a12597cca8e6b26c77c572b2288f0ce192319ee8370dedbae7fab54d1a7. 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/CAC9I1903014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2223934aaab30669e94489fe591ce1659f5c604aa1d1faf00dafe9fa625a437d. 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/CAC9I2203012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b34b4410dc974e2ebdf8e901590d196a54baa601afa4e7e835858e2a220f4c. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CAC9I2203013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd7c7d71b02391013eb388af048b7e6f9904da39f4a8664cc9309ee0341b33f. 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/CAC9I2203014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e620ea6fad3c18185edae425f11da65a10ebeccdfe0c95a79f114f0b89dce14. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAC9I2203015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80372eddbd6e791ccc6aa529ca481a469be7ff3e1a9b5699643821ce8624c24f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CAC9I2203016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cf15878fd7f69616f35cd9c530ade33011429b5965e59cba3f89d470025037. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:39:41Z), 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/CAC9I2203019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cfaf85a7767d168a85b566430e5d9f7e288258fe4eb965100e6fe738d016ec. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:26:02Z), 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/CAC9I2203020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58361915948fa54b481154817e0ad050afa332d96254b0c855e25403d025d31. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CAC9I2203021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf6b6ad34a79187c01bf5b8c4ca779637c806a346f618824a2971f1cf8ed179. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/CAC9I2306010.
Phoenix Rising (10 Year Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cda8b2b146b147b5be8c364b64017b9ab8dba1a15ca108130ecec295a936583. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/CAC9I2306001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396095e4ea749a10a34529b51df3de417f5afd706d35d13d86a30700778d87e9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:26Z), 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/CAC9I2306002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc8c95d18c96584fc76e4bb7b22f639a46688190e448691c1e0c111ebd595fb. 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/CAC9I2306003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f39e38ddee724d4b8271e5feccf4f4cec84230d825c47b7a78b8811a5104f8c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CAC9I2306004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc802ca481fec3dfd9f6ad3245083e1451c1840bb32bf55be3f17acbec00f8871. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:19:30Z), 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/CAC9I2306005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1da9170fa4d15b88e3bab0a372e470cb6dbacd97cce2a698950a64a2f941f5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CAC9I2306007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18031e51f270f334d15ecd41be562342cfdf5873f827628f60167fd54f2d3fd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:34Z), 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/CAC9I2306008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a5ce3640791ae2326901fea143435a435a3cb3ea8f9e581a28bd9aa2762355. 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/CAC9I2306009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866266d92e9376bda8480146c63056773854148673c085d2e35cfbfb70af3dd9. 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/QZ5HC2134401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85109c4264542e7d9ac5c681b4334452eb17e8fc6f5a98b7d93e7e1e85d5c475. 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/QZ5HC2134402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4d5909a88ea5ffb9d7e694b3d34ccd9ce22d8d71d1550dc3097d32aa523c93. 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/QZ5HC2134403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a46be35e06b392c1ec5a20513126cb008270cf8a17db91005dc8c3269abc4c. 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/QZ5HC2134405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4053ec8a94ebd12ec0afb86ea4c1c1597c777d238b757d7da524a2053e2fc4a5. 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/QZ5HC2134407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c67c3869cf4c937870a41ccce07d2313fea3c045022c000755f6bb3b1bf4dc. 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/QZ5HC2134408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04201cb908a5f81d17bf5b6e7cfc51c7e9b35bc8555fd8169c54b55ba08eb156. 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/QZ5HC2134409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f1f82b49886bff4cf86f217872e5f48f8adf10d116677fd5bf89fb8955b994. 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/QZ5HC2134410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728b93ce7b5c1918de34fea1c81faf3fe1e199f4f496c17c27d0628f07dc0b4d. 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/QZ5HC2134411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04201cb908a5f81d17bf5b6e7cfc51c7e9b35bc8555fd8169c54b55ba08eb156. 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/QZ5HC2134409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c67c3869cf4c937870a41ccce07d2313fea3c045022c000755f6bb3b1bf4dc. 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/QZ5HC2134408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4053ec8a94ebd12ec0afb86ea4c1c1597c777d238b757d7da524a2053e2fc4a5. 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/QZ5HC2134407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbc16a61d583dcdd39679dfad41c01faec3a53db34dc0e0ddcee8efdd2ceadb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZ5HC2134404.
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 0xf30f61cd1100d1c8c6bd923e3bbc2ac80fc62a6b20e7b41baebafcbe9d0a5e0c. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZ5HC2134406.