Popa (priest in Romanian) may refer to: People Alina Popa (born 1978), Romanian-Swiss, IFBB professional bodybuilder Anatolie Popa (1896–1920), Moldavian military commander Celestina Popa (born 1970)
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 0x6f6e4faf226e55eb8f92574021464ed7e222ffb3f7dd4acb67a3279e09f61f75. 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/35b1f8a7-3504-4717-9748-de8728ff24c7.json and https://artists.proofprofile.net/proofs/artist/35b1f8a7-3504-4717-9748-de8728ff24c7.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 0x13d29317fda15a619df78ce1eea0531fcf83f99fca1a8def0ff0c20c5bea2a01. 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/ITJMO2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33fc361cc0781941a929f17e6a528856a10b1b59993b66715802368b17f210e. 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/ITJMO2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6783de511fa92bd16ce20e032c30f3df1ab3a1a4f6335f6a0cb86fdc93a19abe. 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/QZHN52198464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb84cf5941ee1728099a1908c924364e713c4e56d5a12a659e5bc4e66658a690. 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/ITJMO2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f04ab9d738bca98959b53748e9ef81d9a4ff06277865c315bafdc83f2b660bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITJMO2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042488ae3c97c9052b9e9ee2a1c68c8a9e9c8de777f0a0800c22c24c25e49c4. 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/QZHNA2172372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87be6687c386e17e30c965563daa42f3511476c5d25668c8c84774216be3210. 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/ITJMO2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e59c44396ddd1a8581833ffb8bf9edfb772ae5a8d5acb13c6a0ef3150b26908. 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/QZPLS2145931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84bcb49a6a345ec5775ae82e016e937cd368c9e0e79fc79d6c3dcd600db4d17. 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/ITJMO2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0b36425c366e9cd8c3bb24d404a9c604d8ef07549032ede937ed969184b635. 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/FR9W12403318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f04ab9d738bca98959b53748e9ef81d9a4ff06277865c315bafdc83f2b660bb. 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/ITJMO2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1118aac0490d8e1c90f850ee5f7b78aed1fe72d81a960b399440a5cb3061ff98. 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/ITJMO2300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33fc361cc0781941a929f17e6a528856a10b1b59993b66715802368b17f210e. 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/ITJMO2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84bcb49a6a345ec5775ae82e016e937cd368c9e0e79fc79d6c3dcd600db4d17. 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/ITJMO2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e59c44396ddd1a8581833ffb8bf9edfb772ae5a8d5acb13c6a0ef3150b26908. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZPLS2145931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042488ae3c97c9052b9e9ee2a1c68c8a9e9c8de777f0a0800c22c24c25e49c4. 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/QZHNA2172372.