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 0x8fff1ea67e49dbb71059a995fd3a6ec1ea4d41b0be2abde112392ec33f811c62. 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/86274a6b-95f9-4f85-8678-123e37643996.json and https://artists.proofprofile.net/proofs/artist/86274a6b-95f9-4f85-8678-123e37643996.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Téli-nyári laboda (Dalok, gyermekjátékok, mondókák és mesék óvodásoknak)
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 0x6ff3c12772554dfb311ac212b45731181381cc75bf0c34882d0ba8dcccdb6729. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:02:49Z), 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/HUA230804102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dccae8003a952a04bb94ad786beace35acfa0bc7ce3797a929ae72f9c88aa6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/HUA230904602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acb38a3cebd137531c5e5ff397399f2d16a8a46a842e1cf8cd8ffe79bf8b652. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/HUA230904605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799711bd754141ad2916524adb235fde07403af7a66686d7daed391c5f771176. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/HUA230904608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf62548d6b5881f051f83e12626fcde2f53a2df9e2ed410185defd54af622935. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:08:57Z), 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/HUA230904619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79c399deab1398392e9669adf29c38d4f3d0b20ca0629a6afec51a9abd2d5a4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:29Z), 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/HUA230904621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb099b3e563c9b6501bea710e2d99ee605521ce3fd3ca4ff1a0125f4ab811261. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/HUA181420403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6727f2742ab4288b9a5541239afee87745643a41cf490ede374a7ac237bcacc2. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/HUA181420411.
Segélj el uram isten (Chanson de Mariage) [Chant Tsigane Hongrie]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612ed012ae15b25eb19240023b5811cfa3b1748d5e6b24b536ec1125a4d2a8fc. 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/QMDA71379918.
Csillagok, csillagok... (A magyar zene ünnepe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2556e7564540e9baf2b14b10c939a1f418c66f5354fac8bdb3e8a51e3b1d3ed1. 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/HUA230802613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68f6b5aa4092ce472504dcf66d74d9fcfcfe19e15ee23cc338f074f8121346c. 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/HUA230802614.
Berceuses: Hajda lilibe (Roumanie Moldavie) / Fúdd el jó szél (Pusztina) / Szundi szundi virágszál (Yidish)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c69777643e0c82c8c95cc00b8edd3c886cf511452e78a7a0ceb03623993b0f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMDA71379909.
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 0xeb82b0b5286241d3f180fc8e60298cace29660a2d79e255acc6a4ec0d5b8f1b8. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QMDA71379924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305a8d13a82a32732d9467c7778e1f5551ec2a8988980c625280ae4c8e5429b9. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QMDA71379950.
Fehér Galamb (Lamentation funeraire) [Hongrie]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dcca588957a2a25286d1ac1b2d5f5f6e1c16d7c3056ef900bc8a5dc24f5441. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMDA71379944.