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 0xf0fd1b1444d336927df75394f068db855add48cf1e9c8728e861d1951731159c. 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/96cedede-7cea-4974-a87c-501b4fa174fc.json and https://artists.proofprofile.net/proofs/artist/96cedede-7cea-4974-a87c-501b4fa174fc.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 0xc28c3c621ed199bccd75847ee2f6fc14a3385b898611c9db15f0af8b131f00b5. 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/QM4TW2111188.
Blink of an Eye (feat. Robin Yerah & Noogi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dac498bbaf37e2ee483efda28099bfb43cc19a239f804d5464ad214f8b1a1da. 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/QM4TW2192833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf7eb4f794d95283698cf457b634745af5748f60799d349dc02b9f0b0d5badb. 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/QM4TX2181688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01e9310d0b42d9b21ec49304a6cd28faa5fefa81c1fb8e84dfcca4cdf267e95. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM4TX2181713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e77c32dc64ee8895d6ee04290c31717fa333cca11884fa7525bd87094e0ff2. 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/QM4TX2181742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5da4dc809d5603408f6aa0ce35179d45f888430ebc71781a4aa8d3ea0bbaf60. 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/QM4TX2181771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe206a5f951b9ac1b5b9e9d4ca7075e5bf7dec751870521dae8c6767171661bc4. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QM4TX2181848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e63c1ceb13665511e99d081e5d7217ffd2daec6b547ba265a99aea142a7a99. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM4TX2181882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d9fe39f0e5c185e9fb0a004f61d5f45cf4f620c4fade982e6df60816d5e999. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/KRB921939521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8211973f8ed4a6a543065a78ba094d07a5ec8d5099896fc5f894fbe704c7e446. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/KRMIM2343577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899010c4c022bfb8a06cdf343cd5577bdd0dac35339439a351b92b808c2dd78e. 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/NL8RL2540749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e203fea85fed71577f2cda4554034e2998aa00fdcb28ab4f954dc0d89151cd9. 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/NL8RL2554500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91c817ef93a7183951097928a81b251a06a23f510093df081998d65e1acd109. 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/KRMIM2223486.
SLEEP PARTY (feat. mindfreakkk) - Daul Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4149e17631c435d82d23f89b1a4cbc6cc726a82485ea498e3429adb4cb74e4d. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QMDA72225429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1bc71ca8c9da67bf1f59b17168b49a09bde77d5aced3d8552aeb320df2e1ec. 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/KRMIM2223487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232c9205c5ff3ce68f19787225d2aaa2c7751e80afb8237786aba0580f3fe5e7. 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/KRMIM2223488.
Nice & Slow (feat. oceanfromtheblue, Jade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e772ee7033966d7d22544cf9d78fab94a200f50836df893d372f749a74a5460. 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/KRMIM2223490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a9b0a837514b2f82a5ecf8e000d4337498e755e52d421c80584f8286dde26. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/KRMIM2223491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d5b40eb38eba6e186e29084bf266a32a8c87ff3457ee877d8de01aefa1c15d. 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/KRMIM2223485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc26bd0d70c8bed62734a3eb550c0f37cda399a9fe569012f53dbc26a66d6094. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/KRMIM2223489.
SLEEP PARTY (feat. mindfreakkk) [Daul Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4149e17631c435d82d23f89b1a4cbc6cc726a82485ea498e3429adb4cb74e4d. 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/QMDA72225429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977a33abb70833e0a96f945573413c23ea01627506f766c6a0830f4fd9de0603. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QMFME2008819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408a826122d025eef688f33b5d81a7d1a56a1e14a9f55e3d09cbc8857d9185b8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLN1H2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfef7b4521d30f6f8e2d55dc4570fb303b42e6f7647089f19ba2f17cf2e62c16. 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/KRMIM2242373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb45f5ce7a2cff109298d1b8a443729e8f9bdbe0b96a40edab237dc631b58f71. 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/QM6MZ2219664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f07aefee9458bc2c4d3e935854be85d53bf6b515aaefd7426237e268563525. 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/QM6MZ2219665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7d8bd2b98e989cf748bdc924169180afdf1cf3d10a39ebe1bc47156c588016. 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/QM6MZ2219666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b895c0566a90f2cafed46ab614a7865e6316dc8098b2534a7c7448a462b8dc1. 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/QM6MZ2219667.