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 0xa2ba336d92f5ab844f19d8105c398bddad2adb285059e27ba4bc9105603a7a8b. 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/a1455c79-1a4b-4cc2-97e7-cd5dd36a96d9.json and https://artists.proofprofile.net/proofs/artist/a1455c79-1a4b-4cc2-97e7-cd5dd36a96d9.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 0xe1ac8f352f2fb08ebff3f5a85e62307db5b244c4bee2a3adc6a47ffa2fda4f4a. 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/HUA791100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688733c534f1bfbb1eb56c1950361e84e1b686c95418394592073c3b894465b2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/HUA791100311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79929a345269780851e4de2c2009d67d4484e9e9314b5be8f8025a2290c59446. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/HUA791100316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a37f20591b533f140df82184e1a936041464fe16ecda85377fe66d281ec65. 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/HUA791100317.
Az Igazi Rocksztár Az Első Próbán Meghal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6a2402bb5d3c28b6d7ce5237e000e585b9dc258b0e66085afc814b6dce86c9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/HUA791100328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88784a7451a7a4f5f401f0ecf7ac70cbf4d7071be0e1edb443fc42a40a06fd1e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/HUA791100332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b4271f635a428ce24ed67712632710629beea89214feba7dc4420769d39acd. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/HUA030700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0be9de537ecd8d63e75d983bead8a4faa2d8ff1a97e95d0c712d828eef1e9b9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HUA030700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec684301136839272e454e6ffe70173add1d7023e7432be88cbe42ccc85a5569. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/HUA030700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d61eb72c07fb14b89fa3adce69458c75e9f4c370454fe91c2a34ee8daac4109. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/HUA031100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b785affc4bdec76106c95e67c19ae64f8c9bc3f94165244f224c2fba05e295. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/HUA031100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdbd634a1f50cf702a0dbc8b17ff3fc8b51190e52ca8c2673deb034f168b901. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/HUA791400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80bcef380c4aabb9220b6b9403ec97a5a49657f7ff18ca7268d1b8a181092cf. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/HUA791300347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70aef7ae37902a7433dc519aa54c777e18af36b35d2a102df30cb72754d3b86. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/HUA791400460.
Jelezz Vissza (Fishing On Orfű 2018 Fesztivál Himnusza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa107e85888128431c9ea2648ad07dac423686aeee0f70c4555aacc59e8d394. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/HUA791700239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7abcdecec63bfb87c6ea5486b878204eda85d2afd00a18b722b3018d2e92fcb. 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/HUA791800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbab10cc51b653fb29a5d14a433b2fc53a85d49f1e9e48df235e39e97154d5a7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/HUA791800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ead256b32091d3837906b747021adb48aa7812ef23bd197d25efa92e3bdfd6c. 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/HUANY2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd2b76e046f210e80b2c459a223b35c3b9b2dbe6620cee015a05bd0729d11d4. 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/HUA031500024.