thumb|right|300px|The Conjurer, by Hieronymus Bosch, shows the bending figure looking forward, steadily, intently, and with fixed attention, while the other figures in the painting look in various dir
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 0x308bac8f44687e67298821c35ef429f93c53cf1c8564d118a3bf43b4bcfb3a4b. 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/eec1c7a9-859b-46ca-bdb8-3d4b1973d1d1.json and https://artists.proofprofile.net/proofs/artist/eec1c7a9-859b-46ca-bdb8-3d4b1973d1d1.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 0xded9e7398883c9c578d10b3c5e3e4cd5555ac72403db35487309665a2652fd18. 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/DEAH91700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28ca81874e00847ccb83b2daa57e49aff104bbb59c40fe84b8200c47f7ee555. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:07:02Z), 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/DEAH91700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f492d916b1d496d05e42d7979c1676ef705f422e634e743127e1d630184a07. 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/DEAH91700011.
Können diese Augen lügen / Little Numbers - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a7fd2406d003f269c20c627a73a7ded15d1a48ffd5b469ce3f0360614c2e5c. 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/DEAH91700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9973c17f3762ab9d9ad751e23a5558fccb776625dd0ffe44ddf93667111c8827. 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/DEAH91700015.
Die Stimme für Millionen. Wunschmelodien und Radio-raritäten, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f10351497d34b0c91f0c04d675461dfaa3a1447dc4917a7619f58bac3d6ab6. 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/USK110408701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4ea19fb040d41a2ca4b8a4beee6ccde1dd50896f97b759ee53973e470db05c. 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/USK110408702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa74d85b37f97a7d386e391dc15bf8346d43e08573e20d02b7da75c8c979d62. 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/USK110408703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade9b875802e5df9c06d7e45140e8cef70b8dbcbcdfaecb4e3ab17d8d7291670. 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/USK110408704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b3767491988e14f4ec29c133b9b124cc807f5a2420a44a5dd0910bca9db6f3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USK110408705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60c36568d4f406f49d87e1423ba6087096644563f4f165c7519776b0c0f617d. 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/USK110408706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c919a8641d2c290de61969167e061714b69ca4a501fa99b0b4bc049d61a52a4. 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/USK110408707.
He Makes All The Girls Smile (With His Smile)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f886e8434c3d15d2a9baa95f26b838f705f9d393f6a04103e522072dc07255d. 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/USK110408708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70333cbade73d68d478392d87505e856b8dee3aad9d5c15d935c4f17ef529bbb. 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/USK110408709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a807efe72eea763200cf1d341605ab398b7a2b55a99c43848293ee11c64e0c. 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/USK110408710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f366959e7e19f33e97ebe615af0ad116da25c76866bf9500ba5f8039edbdfb0. 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/USK110408711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4932a16c473cff78b9913050ed4f0c567a4da0bdd6634dfbc1a1b7bfe10be15e. 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/USK110408712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e32354e854af066b468f2ab47720e454519afdc3ea1ab2b5e4a4f4c45077802. 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/USK110408713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d6326496e491335b4c08f4fc4530fabd177caa6dbb630bec1671cf2f4f37a4. 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/USK110408714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7103125d6b69b0aec27580888b50082557d98dd44686c5aed07dbb055afe159. 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/USK110408001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52b954ffc991687fb8bcb9ead8d24febe8472caa4098d45f6a7dabd38150281. 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/USK110408002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9d651d2bcc7ee526d8075a1f878fb6b28e9b3677c31e64f7af9b7532aad013. 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/USK110408003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c19935c2d24128eec25d835e11955201bbbe1a2c822561cab488a6f763a4d7d. 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/USK110408006.
chuugakusannensei (Gaze／Airo／Asahi Sato ver.)
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