thumb|H. Brückner, Mischief (1874) Mischief (or malicious mischief) is a class of criminal offenses that are defined differently in different legal jurisdictions. While the wrongful acts will often i
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 0x98c423adf5df0011c6fd8cc198dbbc567f92433e94d19ec26d638fd869be6edf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1e23050-17a5-42fb-8e2f-26a199712500.json and https://artists.proofprofile.net/proofs/artist/e1e23050-17a5-42fb-8e2f-26a199712500.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 0x19fff108fef185bd859e64445fed4eec63e3bb8127c8f114f7bed121b162827f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA21873056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1966c2bc91f568e694c900ea2db505ceff6cf99de559868162c648589fa635b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA21873260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd180155d4940902a1c86f7b9e0f219b7f3e1b0a1a9a3c1c6292a2969aa45e9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA21873261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0615fc0cfbc64d186979ecc028173662094c1f67cbde59c53f58fd0ad7feb1ce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMA21873262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69ec14ea420b2ebbf5e578104c674526e3fcd402d47faf205a5c13bec13b4e7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBMA21873264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07f86664394bfb9c886bdbb350eb2484e2740e1e411279d15380a0c3af5e0fa. 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/GBMA21873265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fddfcf6abf238baea2a727642f94acf42978cc452fbe952453b56bcd12749a. 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/TCACW1746517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1d919f9cee3c787237defd83fe7cf80401d4a637c176d18ab55a8308e19346. 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/TCACW1746524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a2775a4b7298e33adc2ee28936f8a4f7ebd82a8a1e14bb177080b7c9f92aaf. 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/TCACW1746525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef4349afd15f0fa2da22bc70ffa70dec66b7cc0589739becca0f89c42e4fe26. 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/TCACW1746528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0305509f471da6554e3c6e9e505ac4850846c3d5b7011cf79f8a959c8b0b91e7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCACW1746530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed9276ccbb18953180f403ac2f186e41f05a9951c6ca4425ff871cda7c2bae8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCACW1746533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eeabc85020161389f119925ed8eb73f9059df3aac973870cb3a4d25410d59d. 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/TCACW1746540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bdb1d67f4a83a32eff257709ea58b3110cf80c78c9ee40a3b73f0d9b76515d. 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/TCACW1746543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb4908c90ec8b0a1aae994e18e35ef817a94abfeb8418d0d7cd90c3faa5d5be. 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/TCACW1746545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ae712347720fa790cee59fa5718109aa54a0f17c480af9b36a3fa4194f04b9. 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/TCAHH2345671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04923cd269a756f3ea09a2b2c96f8c13a1f009e90faff3b11f99ab2ef112411. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TCAHH2345593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d63fb2be2cbf1a2c21ff24bc1404d058648206b04ad0ba95386d00a4bc8331. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAGL2281439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6a4d46e892922deadb5edbab5fdf374e40a906f8b0890f15c0a8e09a0f9bd0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAGF2266014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb04a9069859a6eb12a13bf6068d582e601466d4310c5d08008aa3e2735b402c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX3Q92096366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235d1edaa505ef4a0f0acf0bbc4c6161e8be9170b0d067cf5a915f79c90f15dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAEZ2026927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3eee265bb5caca7675f97f61123a376334e44461ab30e40c55c91f596b62ec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEY2003227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a3f2397bc9987715e3ec0b4a37eec5b7934bc8481a5ced94f02353515edf4d. 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/TCADR1822361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95a4e6259aa065b756bc8925c50dfdddc5448b51b4630c920672300c52ae587. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:27:48Z), 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/TCADM1872753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd2fed29fc5100ac51fabc40d6b96ba28f8d6b9237ef8c74448351cef03d2c3. 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/UKXN22357253.