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 0x560714df0beea94fc48a7301053eee7df1b06f5ec052b513bc817d143c86da40. 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/2b15e525-cf46-4022-a564-0cd7a637b324.json and https://artists.proofprofile.net/proofs/artist/2b15e525-cf46-4022-a564-0cd7a637b324.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 0x3964d4b7e72e18626f273e49efc373ba026031e7ed74ccf47dbeff83dd680ef1. 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/GBUM91800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e981d6a4fdd9e70679c3d67d1708ec495fbbd5b6884e561c15f332b25b0373. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QM6MZ1820118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e981d6a4fdd9e70679c3d67d1708ec495fbbd5b6884e561c15f332b25b0373. 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/QM6MZ1820118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c75b8344ebf8519ed0049b6d8d0bf32fb312db5c189cf3250560974459cb97. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFPL1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a1fb6fb70571a5c93bc43effbdb75c032f98a6cd285ce40d4f8b7ef2cc0428. 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/CAUM81900169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc993d69a8513c7540b3ac709970d1260b4e2f53d8f9b8b3465158ec3ecd33983. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/CA5KR1940241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc562fc884f8ca6074d4c4aa3c699a17ec7f1a8c0d9c5c448c7c0bb7548ae931. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZFPL1900241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf00d472e0bba6f5272600e4b58c5d298e019bad72514c584eeb919cb09ac78e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2017954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d97985707cd53cfdc588f8cb910228c784f870a33b37350b7cc76cad96c881. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/CA5KR2033637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e61b6ee9e68408341fd1fd6bf65a9abb586231ef12c12924e785dbabf568e1e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CAUM82000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5892668c78fba59dc709ac49761eb8d7367344aa6eab34baaeb61fa8dc92dd. 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/CA5KR2113032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d901334d49b9331aa0aab46e663835c953d96fb06cb437df454ae870833b95. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/CAUM82100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf923c04e584273b4cfb10eb9248db618cf7ece0bb3755de7ca4c290762eae4c1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTGW2100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4d2362440ccc0b4670dfc0be6b0f49e848b92e9ee23deb1a6f13ddfe56694a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTGW2100731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc574f2ae7aa449dcc2cd12904ca00737265919e0d26a8ac5870e25c4488d25f2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NLZ542200694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2330399b28cb401f100254b64d251100cecbe93427af46f4dedc8442ad7f86. 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/NLZ542200797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e47d8da1079b8f1733f698c13bb3829c397ae1796ea79801a8d47f7d9b92e. 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/GBARL2201597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13501a0b54aea6241a73748ce94dfe3385788f6624cbdfb98a0cb1616acbe2e8. 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/CA5KR2315757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3895c72541bfbb98db0a4ddd920b0fc58fcadf357ca8250c76362140a2f2fad2. 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/CA5KR2339107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecf6a6bce3c556a40466e653535d7149af2f953f09c49ff1f4a8e8b66082f79. 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/NLM5S2301954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5ef7c4995dd810a3a5a8114aeb8ae4a7ec456e32ab929d02d07be0cc4b72dd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:27:20Z), 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/CA5KR2429296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832fa3f9051ac1e0b661aa45ac56778a55cdbfc42f179ea33c0ba83e63e321c3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBJAJ2400729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fa1283f3ec6d002f20db7dff20c69d7059d183723293cc49aaf10cfec4054a. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZTGW2400242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2222c2c053c63d87ff10b342f1125279aa4cf3b5fbbaf1f0c7df67e8ec4d7e4a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLF712407672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e7b96a09872b076315f7b50496bcc753fb3768f1c83661a1b6b78527943629. 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/USLD91775308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385ff49e2e3994dd9a935bbd820bfc0c14496b93b15688aa3ad2adad4e56c9af. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUM71814232.
Jiggle Jiggle (Jason Derulo x Duke & Jones x Louis Theroux x Amelia Dimz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ac94c87dc37182b11b8195f06b478027bd22829bde607cb9651ff1b3a876ea. 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/GBARL2201619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb8b0be3e1dc1011aa82e56d51400aa8713b5526e3eda9ea7b16765b72b88de. 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/GBARL2201151.
Tongue Tied (with YUNGBLUD & blackbear) - Duke & Jones Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b86f97f837a4f7bc3d1f669c0905a5d84120fe49a4894db17fb18cd539c0514. 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/USUG12000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148c50c4a3583ccf92c85a6961154e35262af2b97b7451bd9223a786ec602365. 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/CA5KR2432688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b86f97f837a4f7bc3d1f669c0905a5d84120fe49a4894db17fb18cd539c0514. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUG12000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb8b0be3e1dc1011aa82e56d51400aa8713b5526e3eda9ea7b16765b72b88de. 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/GBARL2201151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54adfcac50722bf796ef6ce4a9f5203ae56fb3c68cf039b0a57e1ea5930e469f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:46:43Z), 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/QMUY41900088.
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 0x66c26f1b746e93fb7cc22231659726347e2b62e632945addc19011e8456ec1f7. 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/AUNV01600445.
Toolroom Radio EP743 - Presented by Mark Knight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b054c95e59e3c66597bdc50bb1c193646f9281b3e2ccddd305619b358eab03. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBJAJ2400832.