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 0xb9384f65024e5f348ab74942446612731e9e4de80a2e3a319830a9b839a528e4. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a81a09c-14ee-4d8d-813f-78cd14bb043a.json and https://artists.proofprofile.net/proofs/artist/1a81a09c-14ee-4d8d-813f-78cd14bb043a.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 0xb9a5e7ebb1db18fd79215c877bf28ac869a780727f75fc8f064286bbf0ffa608. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/HUB570700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea73d2530c481dc842b81a2e4e75733194b2cd2a3da97b1178697a7ed432c647. 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/HUB570700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d04ba757ba60c861e1892c7ab53fa4429106a1e30b3623b33d3b0c12c3e928. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/HUB570700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98770bcff1e32d1bcc540ab319ccbce0c58d3a10550a49b0f2fbc56a122361e1. 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/HUB570700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0832b3f147d5c00491450b6b30ed94ed0f6aee4daaadd346146bf0bb2a304deb. 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/HUB570400009.
Nádfedeles Kulipintyó Mix - Rózsát Tűzök A Hajamba/Jaj, Dévla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd41f274051816651b7164793ce38b709b8cc93d4bacb5e30a0eb4b135332305. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/HUC301402903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7f1476aaf304f240175e6cf48ae6744a7923b3707eded4ba2b84fc11a3bd6e. 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/HUC301400861.
Én a bánatomat mindig kifogom (feat. Bangó Margit, Curtis & Takács Nikolas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408e2197c9a7f1697817e6253f8be284c4e41b9da0f3b6ccfb23b7c1e481cb5d. 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/HUMAG2400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5648890bdcba9b6ec96e0c2ef41d79cc9e786ecd1141c01f8e5af4c830340a. 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/HUA612201865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe566d8457b709f68f509c5d9f8332bbee988df78f429726aa05398b9eabdbac4. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/HUA612201866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58ea6eb8d4ae2ebfa247e49348fe496110ce94baa5c4b7c6282d12b051bf023. 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/HUA612201867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acc9304b84a7044dce4bcebea6f4daa87c560bdb6075ca10a9f8edee42e2eb2. 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/HUA612201868.
Non-Stop Mulatós Party, Vol. 25 (Nyisd Ki Babám Az Ajtót)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da786e5ed9223374e1f7a7f169cde5d0ccf9665eade341f2c5e3bbf495f1545. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HUC301400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd41f274051816651b7164793ce38b709b8cc93d4bacb5e30a0eb4b135332305. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/HUC301402903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa485ed5d823330ff5521308e26dfca119f805a6e3939d298e662ecf3f9d18. 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/HUUM71300057.