The Tatta (; , Taatta) is a river in the Sakha Republic (Yakutia), Russia, a left tributary of the Aldan, part of the Lena basin. The Tatta has a length of and a drainage basin area of . There are
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 0x3f8e604f761589611bd72d6671ab254679f87555c86c53a369f2ec5f1d7bd81a. 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/612ec211-6879-449a-ae84-c8f3a285f9a1.json and https://artists.proofprofile.net/proofs/artist/612ec211-6879-449a-ae84-c8f3a285f9a1.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 0x60f100025ff4e60576be084e3644e5c467166b154f3663fc1e3f5382508191ec. 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/ES71G2401408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a1a489bc43c571925bdd02faa911380c063cd851860f90f1907c7b7bbbab97. 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/ES71G2401409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570bccecb06a47b9bd2cf7911a675f552b292281e91a96487667918c45f77906. 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/ES71G2401399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c29aebf7e792d32000d2f33f85808d814ac69538a80f60e38749a1c3731194. 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/ES71G2401410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e16209f1d7449cfbd9e9dcec95e1a9831b4be7e3222cfe5c5be2cc136dc1ba. 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/ES71G2401411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e909b04ba6ed918637b49b9bd2a3bf6e77b7c4ec4fd5fa2731be3021b67867b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2329447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42124a52c1ec92ebcb1f74ed9d9e51bf6e7b9e935398ca0159aceb417cf4229. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2401412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75921df679e7a5fa5aa0e2d0dacfccec8db7899ed4d2eefbc8b9b9b4db73919. 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/ES71G2401413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3a3dfc8744501aa3479cc18ef1ad2dc08957d88a0030db8dc3ad4233669d12. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2319105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0877bdea5b6735252d822744edc5dc506498849edbf5d146ed2f5217e0b8bc. 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/ES71G2401414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570bccecb06a47b9bd2cf7911a675f552b292281e91a96487667918c45f77906. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES71G2401399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e69415dc41f10f68dd2bd862e32528fd3dbdf1ae1f58d8b1a808f77a25f1cf. 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/ESA092228675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68852797802aa70d73c8e03e5e13922fe879a623785056c32760a224b2085d5e. 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/ESA092228654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a136b4729cb3f009452f0fd193d7c9d2c3ebda663a45dd2766ed9e93fb10b6. 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/ESA012214447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700acde4cd4103967e82dd6d56d604b76f0ff6e4a23c033801736eecb5dc90bb. 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/QZTAS2406731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee38299727d6dbdb772e1cdaa50494af2d303f78147093539f8e82f3540a6ceb. 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/QM6P42459921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37fe109867e4c1b2d58159ec14686419c5ab3613324bade48a44cb594ddec3a. 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/QM22L2401879.
WHEEZY - Malakias Remixe (Keylea Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3e9f5aebf7b57bf08e6703f5aeab3e32b1983b72d09a55680c22816f5f6a3d. 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/ESA092402113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9185eb5b93dcf996c3b24b2ec87173a728eb0a5dc6c7cbfc04adf9b89cea03. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ESA092305401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e909b04ba6ed918637b49b9bd2a3bf6e77b7c4ec4fd5fa2731be3021b67867b. 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/ES71G2329447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f590951ad4d939f16c28652cf67f54dd2beab0d1c6329ed6e0db8f449a354. 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/QZFZ72378214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ef8a3d88e9e9e5e69015b154d22e944afe56c1f64a432cb262dae08e439401. 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/ESA092210371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17badf84b77d46dd857056c0f5f4691366aff202fe35da1ae0dc7586b0d77aa2. 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/ESA012274099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7707124bc020d23c5e081e212d17f925e222346d7cce3399ba9c68caf5fa90bb. 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/ESA012212837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cfe8a730ee8892952bc6ad64af5b062366d8867179162d810e3765d91f610e. 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/ESA011580259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7152c6f055535239484f6cd6dd3fe817b556ac228361d6f32d9a76d5ae4b78. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ESA011662279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dcbab97e64cf466818ada8f9171c3fbeb66f293118b2b259e0c338b1d5e8ac. 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/ES64E2337322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ad4eee6ff165354ea4269a38000fc34bd835c21d8516b4488e831c32090cb7. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZPLR2097987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1f67375c378cc92956bc0471719074dfdcac9c9bf3b7a65d6a22683b1ae63a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZK6P2043866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487ff7fbbe4655a8a38031eff9340b373c3d168c9a7a98590c1fd47d9b876312. 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/ES71G2321030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ddd3bdc5cb16de39bae50190ec0b8ee0c1a8e59efc14a97ea27d6e2a42c5e4. 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/ESA092318883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47545a3c120310d08643d73db83595f2cace0e1240866872192c72c2777f0dc1. 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/ES71G2306257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e925d88f004e9b33a8da965f6d5de13d5101a9a09257e0c2b0e4d4de1ee172. 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/ESA092233733.