Zenit, meaning "zenith", may refer to: Spaceflight and rocketry Zenit (rocket family), a Soviet family of space launch vehicles Zenit (satellite), a type of Soviet spy satellite Zenit sounding roc
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 0x1fddd50a1b533bd6cd2ec671dc1bb5287bf354a923f4ab19de07201ed7767fb8. 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/4fa2f7b6-a1bf-47f5-a1b5-cc8156337d7f.json and https://artists.proofprofile.net/proofs/artist/4fa2f7b6-a1bf-47f5-a1b5-cc8156337d7f.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 0xfedc1efc74bf282f072d428d678163919a9ba8501c73b82c2783e32d650c62ec. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIS2484597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4788744a2f16c74fe94fde017f3d8c623ff3a022a3a68c8a0dd821eeb730d0c1. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCAIX2409473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c4ff3066a123fd5729eebb2064a43697596bf9c9870f3cb964e74f5adeb099. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIX2409453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4301f2956f0128bb5082a867e0c9d5cfd72ca2def854837f1f249568cc269c2c. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/TCAIX2409462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8ccd30ff803e1e856e6e53d0004adc2db7d003b060e8c052d44db1c129777b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIX2409428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e8f318176b3bc264bda5ca2aec55594ab88d454d02c8e63dc242c14b9fda57. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/TCAIX2409437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cbe56004b3dc94d65782b333ecb0fb0362197721cfb75f4534234c859de4f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIX2460001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a4aeabfbab17795e07e8973a79cc09fa89402fa492cd90d60a1dfa3bb28ffb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIX2460046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923eebf8ca5c892b752738c4121f7935bfcd610e72de342a97180c1d157dff78. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/TCAIX2460026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b25aa40d2969917dc76c84a6f071248bb526b00d608ea7bcfabeaf85928f7eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIX2460034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ee34a6f10132b3cb96d8702257953602729d1f822215cce573230ea292286b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIX2460016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497d6d1ef0b233b63b2eab37d6a964ebb89085ab55ffcde9146b36679903451b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIX2479608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62a2fa464561a9f6c89882bccb17d58a55b67c77d8cacedc718a6a0445cbf04. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAIX2479613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5bd014896fff0cc24b70e61b0f70e99a97ef5a9d34e2c7728957789d038369. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCAIX2479629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb901daf7ad9d1bffa6ef81f6c5fa580d27a843894be42eb614507f6c8aa66ed. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAIX2479598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786c922382c59ddbc371004c336799a65475e67c45c18419f276aaa920333e1b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAIX2479621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06b1bbc05c16be51f734c9dc884001d0f7a3efbcd4540cbe77db86b092abc5a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIY2467088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20806d8b57eef77f726eba89dabc78cc2de78dc1912225ee61efeeabe37b45a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIY2467042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2d64bdba0e7bb60773f5927fe7aadf217bbffb6ea08fb9654325f075d136ba. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIZ2467072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1821abe33cff0c124bf9e3b64150713d5c06bd6ed2f0743556c48260853f7e1. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAIY2467061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384fb419bd113824faf539af6371c8caa0b31d0f43e351dba80f761a20a18403. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJE2557919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5691777d01c341c08292330c0133d3a1231b17530cd46add949fc83841e190a6. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCAJE2557923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc1bfb6af4cc0cc6b81ed5233940295f58bd0c372447138614888ae3e655d1c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJE2557955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1399d9b08fdb49b4691aa9732743b6d013322c1b994fb4d46835fb397403adc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJE2557944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21305fd34063bbbe31573823710950db5b8ab4eedc5d8d938034a17c83c68f5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJE2557935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bb5b44e3cc6a09034155ff343853cde7143f4666636ada9f89e86d97baaf9b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJE2593710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca44c26b419dc8779d5b6b363b4ce7e0e8237d1ecf5a4a53a23fc81f5b13851f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJE2593720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6dda2d8af31c2bb1e86961838bd961a1ffa63f7a7f140a0d56ad8a88405e62. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAJE2593734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6009321d79e7b8c1d5007a61317bab0dda5286a54bdbed06eeebf6d73f6b1c4b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAJE2593747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d3c7e7cc488f3d1ba13461313f9051459147abd76b74f639b80cdb8fdd3329. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJF2506026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088acd5a9cf8ccd230d5ed11d203b9288bce8da947d31a14dea374f24e862776. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/TCAJF2506048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c85800cffbdcdbbc7f0ff96548f50d2f4da066b172e10c0130a9b3169a55914. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJF2506015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8416c191a4f57f3ffc257abcf22c6c3a52dd78d860717e40719ab2786a7e4e6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJF2506035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8d6c08b542b65a8cfdd43c6691747c7967dbb296633e61829d118d97dc242b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJF2506065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30b2bc8c4f712bb6a2b2c7869cd0a1c608d002b2a08828e8cc570078fe093d6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAJF2564227.