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 0x28b665ab3973b923655413f64fa26f85b3e5c1e9e4d5a00b1c44b2f02b88a810. 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/2f7546da-5ec1-451d-85b4-a9129d33c6d6.json and https://artists.proofprofile.net/proofs/artist/2f7546da-5ec1-451d-85b4-a9129d33c6d6.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 0x5c70d1930b586040f1dc2130c33be464b6629af53e2a2207b7ee6c0997b87929. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUBN62100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774ce30d2dee8c5e80c52e0e4126ee35ce0998e082e8562f4343f26abd061010. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUB002200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfeca43ec60024f416d0d1d9ff0be870c6e95f85d2267772287da841dc956ab. 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/HUMAG2300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e1027fa553a0e2b3162e2fb61cffdbb9f8a55d0c4eba411ad00d9b98f4ce60. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/HUMAG2300408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a97ea56000c6bffb2435ace1d3b729a96ac15ab221a1ae43c993da160f718d. 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/HUA320900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f2edcf7c30824246e1a6c2e1714f84217d7928d3b84ceb51557e1308d2d816. 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/HUA320900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4a6ecfaf927d6fa52f5ba5a29b009ccd695e932257763bbabe26c27fabd6f5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HUA320900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105f99756a7ae044ce4676f14acb441c540f4e4780c64da44304adfa3324eb93. 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/HUA320900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96502ef2a67c36cf9b3586d0a08319ea5ad9e0303bb9275c6e1046d30fe79f3. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/HUA320900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487f4a8ac74d1ca1c635d53a1fe932dfb80cadb11df36ffb99a24cfcb8864b52. 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/HUA320900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1390995ede00f94f14af45cdb6d5b62bcad592877b2eabfa48aa49dd062488. 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/HUA320900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2820cf4c589eed6c7b3d6c7e52826db65065be7820c6261609694eb23a266bc. 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/HUA320900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec7e0736a6a48f1de9372128d8343485092e1c26b9b166a6086465068205230. 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/HUA320900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b44c596230b42da021b08dd67a29e01e85862c9d14c77e2b449358392a98a48. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/HUA320900154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc8ed02ccce7c8b0ea604324f0daaf4074af1c614822d5c660cbe3cfe88f66b. 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/HUA320900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3d282e57b5c864f41826f756ed9113e3b79a95a6db64f1dcf570a9abbd24ee. 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/HUA320900160.
Méri Poppinsz első tánca - Talált tárgyak
Méri Poppinsz első tánca (Talált tárgyak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba341c7aba2cd3a8657a89dc2e03da398dc269e74ce81ea7d078d9344d3f6ac0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUA611901963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f886754d2491164080276bfe5e3079ae2ff762a77e0ec054b5bdd84548eef48. 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/HUA182449718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48416f6787df7aefddf77bdadc9622ec43830211ef3f2134522ad7ccab7cbf75. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HUUM70900133.
Angyalkert (Musical részlet az azonos című mesekönyv alapján)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6304d6977a4830ec599735493cb7f9b066fa300f58acf772780a93e98b68e67d. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/HUA612022888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885451a19bcb4c9238cd464e8628dc36fb346be06cefee36c0319a1d207df45f. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/HUA320800165.