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 0x6970c1228e632c02dfe8ca09c7885e2665778c34e051f356a669a8b7ac1da205. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7511ef02-f814-4580-833a-bbac532f645a.json and https://artists.proofprofile.net/proofs/artist/7511ef02-f814-4580-833a-bbac532f645a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Petőfi 200 Megzenésített Magyar Versek II.
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 0xddcf076148f9d7eea854f35c79c6b04d9d2fa334a8e80b71d5afed09754036a0. 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/QZPJ32101550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa3478866171459360abd06b3997d743185e02c86cc9e8ee522d803aa8af623. 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/QZGWX2095049.
Enyedi Sándor Megzenésített Versek (Akusztik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f89b31c652a098829fed064e58147c1eef6e7fe298f621ff45e09a60b00940. 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/QZ22B1944899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a486538ebecef34997c5ede502e183e0690e6ddefaf94b8a0d3f7e107b6dfce. 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/QZ22B1814693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ffab3263c3ac8e62b76fefb8e742a65a41fae5d80d177861b6183eafb094a5. 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/USE831531964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9fcaca2afdf71ff4e376be9bc4dc5c2fd3093b5e0d27a141efbdee6faaefb3. 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/USE831531970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd45436e661b9a725615c09d83c51b22b3350edc04923cc90804970a8e882567. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USE831531966.
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 0x190bb32bba1b512787c8e81735ce546d3ddd72c9f3d0c70361be2c92da60b997. 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/USE831515458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8beec7f6e5388cee048fe8b3ed2fd67ddc319f1f74307b4dbbedd9898584184c. 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/USE831515461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde637086795dd7b084a3202675262b665cff0c26edecc6d93be840fa5fbb9eb6. 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/USE831515467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8c74f9dae054588c5196e1d906ad7d6cadd313b21f555f89a3a8414d478923. 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/USE831515459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9365a674cbd08bcb06ce5271f7d2eb64c1c809d532d3ce42a2178f9e2d001504. 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/USE831515460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85216558bc8aa61bb2a797081692e1893147cc6baf821f5ef19819651d365260. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USE831515468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9150e2df1cc3451265d3bf2dd5113e06f43f7733209a9796fa0a2c1b942318ed. 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/USE830985632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcace24b630e0ecf73a809d81046876dc3f2ee8fa297a0c99d7d06fd274163934. 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/USE830967072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f8438a26bba8888ab1bdf6527333e0969f6559cfe3491c34e35271cd36f5fb. 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/USE830967073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fd514aea72022ff2f5bf7c11b575659ae46b21e425428c13940149236eb54e. 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/USE830967074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe69e5d0b1825e8f78bd2cb2fa1da13f2b19e6a2e2c0f7fde564cc307c7df19. 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/USE830967078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe225a7dd283b8e2bd770dfe2880bcc4d7c01719cb1562020522e121f6832782f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USE830967075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e973b953b76ac60c14285636ccdca974e1d7909d0c4a5dbc3b37844092a670. 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/USE830967076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60047d150c5d5c2df4e53cbf93ba61295c372d0b040b2ba62ad4968f6e30edf6. 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/USE830938264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbab862d1f02853df2003d9b11a412b7fc460ef4d39d34984e36ab15df8af29a. 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/USE830938265.
Enyedi Sándor Quarantine Song (Acoustic Version)