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 0x7910d3e6e2d6dcbf2735e3a424a1d8a9f8ed74a9929f8547f76099e42b820786. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1e7e1a6-f9bf-4444-ac04-a88155b5a407.json and https://artists.proofprofile.net/proofs/artist/e1e7e1a6-f9bf-4444-ac04-a88155b5a407.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 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 0x2a243d8f6ef19c5967e536c218713b2925ebca0eba446c9d390ca10ab3f7d29b. 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/TCAFW2181999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2696c0a6df43ccce34a89e853af2636178b829fc6ae9b73b1c8d3c77e3b77d. 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/QM6P42158958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadc7a4e33acbce497761e64dca23a2ea995a63148b6865f5f9d0061b74199c2. 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/QZK6Q2333618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929fd9c203f69cc8d1ba7d3fa75ce038d1a81c939ff78a5085dbcd3a61bc8534. 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/QMBZ92144938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338322791803185b652b9107373bb3f92a3da088950f49da6a446f8400418de7. 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/QZFYZ2218401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd901df9c354399cdd4353369ba8365d9588070778a18fecf02d7daf4728f14. 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/QZMER2289662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7450804cc11f4d1c6e4c842ca34754c6d644184574efa756045d764064a964a6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZK6Q2333620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8611107c6802bb6074734bf61a2f8e070206110e398554212da6729747484801. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZK6Q2333621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd91aedc7c4f8598ac5d556b3674c43754f7e9042a5fe3167bd46352f506606e. 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/QZK6Q2333622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656d0adddc94263d02ddae0b8552b0fb90f4e61f084be025947bf58ede0c1f58. 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/QZK6Q2333623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bc23e8e55dc268186398eb0075a8ba97f5dd7921c61b0d1d16faf1f15b202a. 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/QZK6Q2333624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbe66ff647e36265b00aa24d6098326b2cbb0b91398ab31759db540d5e903db. 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/QZK6Q2333625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abb672a3832b506d34652bd5a178de3762ddd59ea2f3519e8277220ea83825a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZK6Q2333626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe812ae11ce2ba9f819a576566f56b935d8f41d2fc785f87c926d0cf70b25d743. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6Q2333627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48f0193bc52f67ac7ec50194da2690e41acca8401188ae058c118d9c70b1798. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USUYG1237806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdd0feaf525b473f10ea4c38bf06b587769b10cc2e3269a75e2ddb2e5368319. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USUYG1237807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45c180726594e6a13308e0c9db0bd849f5ee16e00140f7f557b49b77ad21eae. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USUYG1237808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539253768f1eb0b1846b32e0bcad62ebc47c0841236ac6dc8b0b67a6eda6945c. 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/USUYG1237809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8f5b02b6d56d454a6f3b4f8ce8c28f970f6c70268745cddc9e29f28ea7da73. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USUYG1237810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b2cc5c3c92975f0a710969de474f357755888789db1a953fcebc1da6690a75. 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/USUYG1237811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c422a17d307d61fbe85a585ab0b60216684047411e2dfd38ecee4789e32599. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USUYG1237813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc237e2076f30744c5f3076cc7cec4592ad1a9626b78b7bae28843a2f6a2f1af6. 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/USUYG1237814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bbbb28e6f1f0f8773b8aa598d3201fb66f7a2222bf53c811c42f99049179ca. 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/USUYG1237816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347844d298a47c32c9a2d7e481d7b95988fe877dd54a55df8a2bcafc5de9f084. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USUYG1237817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744e8719185d9140ff52a42fecbbd141063b2265bba118a260e24f79b28a5901. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USUYG1237818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e95cac51db08b97a9c8420a09343a4c949a80a14c24b2a70b4f6bfb155e9298. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USUYG1237819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3ca87014865183f0abad5ac899f67e0ec86bbc3f28f5c3cee100ae7517b60c. 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/USUYG1237820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416ecc8742297d1946c996a8f78e19ebf90bebf8de9aad2213db153d82366b3e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USUYG1162682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf95c1ab419732e9f2e571e69feec07a248f6898bab365765b049638ec98438. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USUYG1162683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83381912d74a783d021b530621d02234c97e0781196f2abe4ca35e79d95a3e90. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USUYG1162685.
Saved My Soul (feat. Clumsybeatz & J-One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1adce2854a6bc2c9e45788843234f34df52d6289a3b90ca5f2460e2a3822e03. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/USUYG1162686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e98da7538a04cfe17dfe5bb752bc4efbbe4216626ec631775f29609347c434d. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USUYG1162689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd69a415809849d39d34b6fe1c62f39a0c4677882879e5da45829dfd18eb33f. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USUYG1162691.
We Got the Best Weed (feat. Clumsy Beatz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0584108dfe9a141c36caec023878a9c3bca49f121ede157d65dc90ec74102b3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USUYG1136045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cfe0831646110fbb34c2805789a4aeb478bea7f23703b003d64bb3ca06681e. 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/USUYG1136053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2909be8b962c6d8c00c0f0db2e8774afaa2564e10b1d2310e289741273c0f544. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAFM2161741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aeabef889fb870c83b33ffb344ac6ad4c688e2030a01b55800d130a7883f31. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM7282459255.
Stand Out (Reno Local 2014 Contest Entry)