Rook may refer to: Common meanings Rook (bird), a bird of the corvid family Rook (chess), a piece in the game of chess People Rook (surname) Russell Rook, Baron Rook (The Lord Rook; 21st centur
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 0xcbce2293ea3228aecaa58ede2d8a381d1f3fd6468f6edbcdaa07e3ca2b476dad. 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/211e9455-5f88-4e8a-ae38-58e970960fca.json and https://artists.proofprofile.net/proofs/artist/211e9455-5f88-4e8a-ae38-58e970960fca.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 0xcb174a492d5edbe8b9b03d55ad022d7bea1d256a04119dc6b6f22934a3da4094. 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/TCADS1886239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb63e675065c3251fb614a18629027b94106226024743ae9170d611f3ccb0e8. 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/QZFYX1927130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6215b5cf8cc67402728dd39cd87227f3f935a5be69d9aa85787c9de61eff39. 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/QZFYX1927136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf188cfa8525b0f2aea3dced6def29b9628faa32c6c695913ce7c003408e1d2cf. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZDA42030061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ed0b1c2aebaa134f5c692d195870ea1ea244b7243c661fede084b3ff9b4975. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZNWR2018207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533f27bd21ad2758f7402af0b947a3b031ee42b8113e130d2504d5d335776e8a. 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/QZES62328996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1fa1c7e24a70e8347b36c5672cf9d521e07205a89d8a60cff3d73b051a5975. 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/QZTAX2368909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa8dc10dc8867cb4279d0d6d2306307a377cff127dc2997fee4fa0ff3ebc230. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTAX2368910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692a0855ca5acbe62224a8f2d5c2345d3a77cc948c96a496daf3a1284c186998. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTAX2368911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc3057889c1875ad0f9804572f0ed3a37b6b74669e1690358afc796599d4ed5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:53Z), 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/QZTAX2368913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3048c8d408a943326ac2c92d7f9d2959be7a321dc90075c66a72f04cf65b98. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZFZ32401037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fc69395ded52118a496a3cc6e1f89cde42f1551e608a24786e14c5bd915a4c. 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/QZMEN2439591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606935f1db9b685a944fcda721b22c0331654e307167eca6ce4227f10f0524ae. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFS2428243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56e59511af3e29ea0f3d275f6aceb2120c0379103ee276ab26bb81da00ab5e7. 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/QZWFS2428244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aaaf97cb631852d6a0aecdb704c68e951da29c8da66a199b7cd4a6a44c06f5. 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/CZA232300658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246ff6ff7a866cedd45674be237e0e89877e413ae3c8f1c4e10ed17ee5f1d918. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CZA232300660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1931f6eb3b9d7cf13a22cae21249b50f806a55b1b6fee2e93664e3d3b46d30. 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/CZA232300661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248c4571295299af2e173e7e7208c3d1934bd2acc2d671efc09756d62978388b. 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/CZA232300662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d13247772fa672e9280251c60f1f2d5ffd7dfecd09b8dd0478fef4101403415. 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/CZA232300664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725298eca3599de4251d54772517dcfbbceda86ec655a67804da0ffc15db7183. 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/CZA232300665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3c1eb0c9db6c1d5a34d62570186736f82dce68c266ec705e8a55e6edc2cad3. 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/CZA232300666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae7783c8969d432f0fb52a29330a1fa4b40d7bbdf58f0e49bcc413d93a1a956. 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/CZA232300667.
Všude kudy dem (feat. MC Spyda, Brejchus Pavián, Rook, Batrs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc6fc1c07e1ee5e1ee75b862ba799476a70b7a73e9b1ebddb87d87e7e62df34. 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/CZA232200525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36247653e601d5e140341e451ca9f3666ffa4ebd6d342bf71ccec449d76e5c8. 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/QZK6P2019892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef02aa8bf5cb55181ad0ff47bfbd49168e43a075e89d9f96e69b3a9e54dc30ee. 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/QZES52158430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c4eb331dbfa36bf86ad9f7df6426f206d712bcb35a3146b09168681db357c5. 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/QZK6P2087388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdfdcd6c4b5abc0679692e1bd9c90a7c142c52bb891707bc6a9f466f931d825. 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/QZK6N2052419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123b75ecfb47719aca3a63692a1502b209783493090ad774a29d3bb4a09890d1. 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/CZA232401089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c89f098c79e262a58673527a1b8ac76168834f4a2f02599d806b0fe898b106. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/CZA232300659.
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 0x15881c0bc8ea39fb0bc5f30b20a59bcf18d67d783600ad0a44f2ea1a236b3ff5. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CZA232300663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6418997bfe53f1f12c9f6725317ed5854e2fcfc8267fd939d0fcf51d24394d6b. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/CZA232300668.