Ansamblul Folcloric National Transilvania
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 0xe8bc96b07e19123a57c17d8c13e45ced66ea51b064f593e603f150796d0a2775. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee50b1e1-f8fa-46f5-b117-dcab8304f346.json and https://artists.proofprofile.net/proofs/artist/ee50b1e1-f8fa-46f5-b117-dcab8304f346.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 0x8b7f497ba2e7f0897fc3b9d3e2f02bf4d6b59fd8d7c77edd3f8d0790348b5ab3. 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/TCADI1735325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105f376024dcbcc72295f5b2dde8946568fc3708bb8f5d82d8093bdfe0a7b41d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCADI1735327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c498f1c7aeced93f79a1b683305b94a3a231ad4ebedfe42ccc729c87b40582. 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/TCADI1735328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2925207f265688d4bbde6c693984a59b0ba448bc1287a88282ffc3f1cad366d. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCADI1735330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b88528c5a6930cda68b579d79e163026abf08737d17872284caf6eb1e104ba. 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/TCADI1735331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9af2fc5822ae4fde407433fc23cca2717746800697970f89d9000870324daf. 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/TCADI1735332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d30518db4c38f71a675dd8b34fe7df5641bb9c534500e2dcb085f2d0ae61665. 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/TCADI1735333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cca1c0aa81f5544d0ebfd79f9ec22caa19e5ed1196b2d731e3b42b7f02202ae. 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/TCADI1735334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63903606db6d8eaf5ae7e2b65e960f6c612230235a90abccf39640a104bd1b3. 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/TCADI1735335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b7ea83fdea335357929df0f92eba12268a3e800afc0acb4e67557403813aa. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/TCADI1735336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e05229f300bace40f32e99202ec9f0a7f989e1bf058092be36e7a0a381e590. 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/TCADI1735337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743c3b75b2ee1ed71d02ec0b7c07d73291f3b5e6015f30219de5b205c121c1a. 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/TCADI1735338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534e33d399882197b7b3f278f440b9a779fe18a291a53647e0b82fbc63dd01a5. 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/TCADI1735339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71eb79011e3e84c4aefd073e4b1e8b1d5efd6f4374b8f57ab05a95865962bbe. 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/TCADI1735340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34176c0a825325200d8a7b7a280af3d7819b6f90cefb0d0653bef85eb7db2e5c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TCADI1735341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08aa96c9e5662a3cd0900f9c5a274a4013f10ab6fde33b209b998d417276a4b. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/TCADI1735344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eff8c681b3ae42a72dfe4f1bc1389e5031baff69afe7ccf34f4a9a8ce26d2c3. 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/TCADI1735345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932f2da612038bcd901b3b5cef5694851abbe797fe0258815425cb9845097e03. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCADI1735347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d42cf439b247a079bcdd2921624fd39b68d8d99472d8d1d407412a8ceed00c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCADI1735349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8c43926016e61725abe1d5ccec50ab36bb9204c531070d5bc4101146fa2d45. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCADI1735350.