Nana, Na Na or NANA may refer to: People Nana (given name), including a list of people and characters with the given name Nana (surname), including a list of people and characters with the surn
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 0x84c96969e0429d5be72bdab755dd6e6f06b5a1f23ae42e45cffd433ece9bb027. 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/659142c9-4e30-4c32-976f-0509491d9c94.json and https://artists.proofprofile.net/proofs/artist/659142c9-4e30-4c32-976f-0509491d9c94.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 0x9e838efe34c04cd34041c94de391a52a37c2417e23e04da66693583fb6432047. 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/QZHNB2217106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e4c80dd3c66725b4365ebb32c9b91e7aed5b7772118abb390f9efd93a2c62c. 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/QM24S2302951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36458dc46f07353af30e1788791792648349112c7f30a5597a770383e203bdac. 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/QZDA41959450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4d6533211eb66824b7cc41fd58f31261dcd89d2786842f94b5f052ba9c44bd. 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/USRC12003425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2fd4601447ca1a26d89f315107983e06c966e61295d141e1c1173fb6fd6e2d. 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/QZDA41959451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fda13d644547873c65daae73c78e539b3062b10a8c986efbcbb071040708a4. 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/QZDA41959452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240ec7a2a786eb4c1551c31cc8a95568d1f41036bdf78e8a4aa25ac996601113. 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/USRC12003440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5099236d6b442f0e6528c50a7a37bff68aef66d44b50df9164a9e2c3262a830. 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/USRC12003442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687058576801f4d3c5ed64468ed28c1b80d2acc154bf64b9124be991c693df9c. 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/QZDA41959453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae03d52310231eade48320ea927c00684ff3b2de41be6eee7ae618b5c93651b. 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/USRC12003444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3cdad0655b5646f028267cc6781f475cd0f64722790f9dfd876e785e879061. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZDA41959454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7468a74f810d53c5231eb313c6c58a30f3863ee0dc5b2f30a32c4bb3f16bd2. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZDA41959455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9294031887a413fb04278dbf6a5e38825055a76450c1cb835b96cda42839de7c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USRC12003446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228a373082bc2cc281d5535714247d2981f2d113fc3249a6bc3f8a4c42822f2c. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZDA41959456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829fadac4857f467205e3001c776cf70854bb8fd13d7ed9d52db96e1a71f0b6e. 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/US38Y2413501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7e5d6c9ec66aa39fa100bed764422730ed5b19b407bd5a9576035fb6d0d0fa. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/CA1C71900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43283994374f8b5bfb348b9eddb85cd8b150af91ff7db10447997565455ecef2. 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/GBKPL2142208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe969e33edfe60d4318e81cf59f9d50939e30a967e5cc39df739a9dea64c43af1. 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/USA2P2426080.