Nissim Baruch Black (born Damian Jamohl Black; December 9, 1986) is an American-Israeli rapper, songwriter, record producer, and podcast host. Under the stage name D. Black, he released the albums Th
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 0xd79490acc02c38ae8f4455ce11d170a20cc919131e1e2455d5e0a535ab0219f5. 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/845e0dcd-a19e-4903-b0c7-06927490cdb5.json and https://artists.proofprofile.net/proofs/artist/845e0dcd-a19e-4903-b0c7-06927490cdb5.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 0x4a6ce9d74e0624cd3c8653ec61693e516a123f4148e757a05b9726827ef48e39. 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/QM6MZ1706964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad43c4905714bb66903e3af4e1f6d14ac29f8e778399305637b9b7bce7f991cd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QM6MZ1706966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67fa31f8f766e4d0ee75b43149c37ed50eedb9739fd946ad8b0d4ab6ecfa337. 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/QM6MZ1706970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1a7d41b4f0a01444379903570067d4fd9fdab13edddbfcbef778bc3290b4f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6MZ1706971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27035cde786096238b114ace0a72161911f783a9fcad4575fbab76a945421122. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM6MZ1706973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d644a21f3706404b454c50378b1b400f1c6311117d66cc04150312a318c540c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM6MZ1706974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1250fc1975bad2bd47c0551af9574c77ae584d2023b78b319efc3241dd633195. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:31:15Z), 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/QM6MZ1706975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e6f34c7d2162da43278027cb4f2a5c4e68678176a1e2bf43be158e3c9a893e. 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/QM6MZ1706976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9195d38cf49ceaf55496ba096cadc534b6defb77511ffd7e7e6e99b0b9467eb. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QM7281813592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10c7963b70d48c7a1cc294c9f1a33e4b6f760dcb73900c33e9763f5128eb841. 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/QMFME1941518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3829980512518270e19ecff0427d190621cee313887fd8b9dba7ca4b8f63c7. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM6MZ2020973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e861300b8517a473b0523030822b19f5f79a1d149e696f9483c12d5de2826a. 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/QM6P42037117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500551f9ce3677c8ada75d9b2bd0074a7934961be60f655c9e6bc4bfc79fa570. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QM7282048716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68b1cc7f62f00b23c8c031b726343c3f30199e3f689b71ac39a50f4fbba4c38. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNN22174282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18860ff6708450bd33286b807bf3c510a875c6039f22bf2a0559d436c252b18c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZS7J2100738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195112d709653d4f472c0d42f75bad3ba8354bf7deb7592e353861291742c366. 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/QZS7J2137791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68487ba47ac4486225942a9e654665d03081c09a5bc75c59f3debc384edb77d8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:56Z), 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/QZS7J2215820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932ff5cffd571ea327a4de8bd4fc09924d1b2ab03130faded3727178d501305a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:09:15Z), 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/US92U1907761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a09ab700424fed6c039f6efb1164ef40c4d6a94820cb4044c3b8063e6c5ba8. 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/QZJRC2211107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9340b2fd353948c1b411700eb2a18163f662cb2a8b7a3903b8fc6531e3ff3560. 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/QZQAY2420771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f575e66b917d0791502bd9b36808959f9ddf6646637bff88c3c665b096f822b. 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/QZQAY2443222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8f92d9dd9370375c49c1379b0864caaf28ab12f4c74cc0ae8b78fc20c9bfb0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:29Z), 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/QZQAY2433450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ed08946ddbf913d296d07d6b6482471bc10423cf8e246aeb4deed3ae0e5a96. 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/QZQAY2460906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799444acaaa27de1792c5b0735988c94c5f751bbefa10d721a4df980ca129ad2. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZQAY2406190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de94dd07c2d23baa29848fba24441e282ecc266726ad912fe1153016e060c59. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZQAY2426604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9a03655a7d7825e990335f606fa3390c1162b492d6260083281df8354d2362. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZQAY2492733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dee235370b0d6936edb89df5eb49e6a149578192618db1337a053ba4c466a4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:02Z), 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/QZQAY2414749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aab193bb159862b7b1f204a08301c19decdc089ffa459e3121e0454b3285ed5. 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/QZQAY2435376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a00332e30a2bad61752d594363140b6ca064f8f38bcfd9ce4dc18fb19d509ad. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZQAY2421878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340ee94079b478d5ee0673d3b31187a1fa58100b30dc8e473aeaf2160b219de8. 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/QZQAY2434241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1d2ef460030f7d0e794c7ff8e225bac7cf88d4385fbdc4b82c6a680a71ba07. 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/USDHM2032334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863250908daaad79888bb56a65b6bae224313479cbee05e389d0545547bdecf8. 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/USCGH1940605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72e69e006fbbdb3e47caae6721352034ddc61df95bf80c0e8ad33168d248922. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTL92305425.