Black Baron may refer to: People nicknamed Black Baron Pyotr Wrangel (1878–1928), Russian White Army commander Benoît de Bonvoisin (born 1939), Belgian baron and politician Chris Pile (programmer)
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 0xb1d7d690f26363bb56bf7f5e88e58ed9e02366abc14fbe2a97bba424fb9d48ea. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/820685f0-ec25-43f8-9650-e59ff613e281.json and https://artists.proofprofile.net/proofs/artist/820685f0-ec25-43f8-9650-e59ff613e281.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 0x638cf3015cb9882d05ec43f7c6665fd5ad19ea78c229ba9319ca8536ac322d4c. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QT3EX2439672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4ace701c69f34bef680b4b78041e8724d49b26fab07a9adf20b81013e8a5b3. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZTAW2588405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf6092a4d42d1ed21f198cce128dec3a7900d8fa2ee7cae9fa4129a5dd7580. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZTAW2588406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a24008a09bf51cb869942dd0d2826666cded39f170dafda8630ea871a4b3407. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTAW2588407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477f9c1919b3589fdc379c999dd2172ee6abc7abcb618e070f8975a5390f0baf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZTAW2588408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2b2c9f4765001801a24e2ef8d1f1fe52aa8917679d56f8f5dfe238d55d17dd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTAW2588409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbedf3621c4d3bfca32cf51dd130f98063eff522f98b8c3aa7bcdb1a80110d8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZTAW2588410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41889ef0c72fe4d5949a7306af08e8098e3608c79f0082e95ecd95a168e6e0e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZTAW2588411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1e57a8e84cddb61e36118fc42c1757ec9cf33986b1e7f95289b324c833e144. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZTAW2588412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f24e1f77556e908d9fe19d574da7545c1c8192f664a97f3a07361b7b597c069. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZTAW2588413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779865d004776c84eb7cb05ab2cf1f1f4666f320866058f702f45bc875d22fbf. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZTAW2588414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ac032c3c8aaf035f252d5b1e76abd6570da4112d48e1a2640657a1d5b4065d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZTBB2572334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4593131169dabb6efc34564ce7d6c342fc51557e57f3c0a55461a39cb227adef. 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/QZTBB2572337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d27ea94711158820b651390f91e6e4db898436f94bf949017b4e203f763442e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZTBB2572338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe62ffe7ea2579cb7dfe3d73fa7181cd919e2982126cf89aa790a9b12f0007f. 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/QZTBB2572339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7b6462ae18c533adb97e9bed2d485ff5cba65c112b6c4645159a3cf60db7e5. 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/QZTBB2572340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bd7434675ed4e510c211df298caa8255e33441a3bf584fe382ed0a1beae544. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTBB2572341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba1d77a6e3cd3d22ab09a3a040ce241fcb01491093c5171370ffa87124033c1. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZZ782536552.