thumb|upright=1.35|A patch of grass showing three zones. Frost is a layer of ice on a solid surface, which forms from water vapor that deposits onto a freezing surface. Frost forms when the air conta
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 0x26d119e054483d558778920b42f1a77ff50807bc57d60ebb763420c85cd08ffc. 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/53615911-1bb0-42be-9a27-639ebf033b0e.json and https://artists.proofprofile.net/proofs/artist/53615911-1bb0-42be-9a27-639ebf033b0e.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 0xb6739619181b0ada502203a7f94e0287f4105e0cc2e62f4c01f85bdefed90c09. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USDNB9654604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfca030d8697ed2fa88ade11aa10e534e63594c4cf96a75b9d16aa8e39ead1e9. 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/USQY51036517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd78559c842725a8f4cd5f04308db02ff3f8494c3fce50401bbc00dbd360a81. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/USQY51036522.
That Was Then This Is Now, Vol. 1 & Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982c69999016d964e93f66f77577344062b1200708abecf8083a14e617056539. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USGNV0900022.
That Was Then This Is Now Volumes I & II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b163826b12a3c5a5191d8bbbc7fc9687496e3198b002615da9e5dcc6c5b1ca. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USGNV0900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982c69999016d964e93f66f77577344062b1200708abecf8083a14e617056539. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USGNV0900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a331af48764deeee96d3aa663a4c3ba390f7fa2a93caf227a028e59f43b4163. 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/USGNV0900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2753fe76051085059c2f1e245812ca5f1cc5bfefb8b4d03ac634e1933ed0b893. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USQY50976497.
City Of Angels (Above The Law feat. Frost)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63188c04c39875ab63019b465a0f7f0bc2feb77c7930c4d7323673e17a36d4e7. 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/USHM80579547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa090aa3f07f10ee0ab5890adde58b4aafb5e016d5ad282444e566fcbfc51fecf. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USGNV0701908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444f4035292916066613d7df7933a6774d3921612ecf06900fb611d6cc988829. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/RUA1D2050128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be4091ffcc292cbf609c4583612e52ff42cded017dd5fd584ced2ee3d5135dc. 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/USA2P0504325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b48ba47059cd92b66ad5964843fe1d4459ba505637a4d6ee494571e67fcdb. 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/USUYG1082603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a77f956a151a449ed583977fd06e7a2bc862839798ad7b7c7aaac6abe08cc6. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/DEP960500141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b0d596d3f033db7f408f3e7dd678bc3d55d08bbc7b311566c575db29f3ce76. 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/DEN120205895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea1faf22ce17b8f880bdbe9d17e0b01a2ec52734ebe820c87fefca7141636c. 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/USPE09000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd00d8bed5313cabb04bec1b52bbbaf08d26753e5aab24f7443c69da701589a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USPE09000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbe18efd16ab16e7c98ada87155aff8bc90b5323e2bcba406346d0272e8cdd2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USPE09000319.
Thug Tears (Remix) (feat. Rick Ross, Philthy Rich, Mozzy & Frost)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e7ddf28dacde7e1381c45645f3977aa78ed9a53bee31e00abdd3b4b8ca29c1. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USUYG1203884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20389e27e2dd3b0ef2c0542895b1555d064b06ee06ebe8242ecc34bb2084d39. 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/USASN1602476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29292b6ffd5f962ae1da480cdd156a9dfa680eeacf7e7e839721405d371aa388. 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/USASN1602478.
Girl Like You (Feat. Mr. Sancho, Royal T, Lil Bandit, Bullit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa771a2f29161a14f3a51e4eeb6b13b4cff14755354c6475810faafa3c1d85a3d. 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/USPE09000474.
One Moment (Feat. Royal T, OG Playboy, Bullit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9566cc28bbf53d57b63c350034f30b1ca7d1d23a23575a21c2b282a699dcd425. 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/USPE09000483.