Tada or TADA may refer to: Places Tada, Tirupati district, a village in Andhra Pradesh, India Tada mandal, in Tirupati district, Andhra Pradesh, India Tada railway station, in Tada, Andhra Prades
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 0x3000f6508378af88db47744fc8c2a00c9b874c0b2e7203fba463a67e174370f6. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c867334-8f6b-45f6-b78a-00ccfee173e6.json and https://artists.proofprofile.net/proofs/artist/6c867334-8f6b-45f6-b78a-00ccfee173e6.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 0xa5be12725ade6ccc8503dbb7e46cedfa4436603914f4daadae4b5a8074a56787. 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/QZGLS2335454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0a7036e92614f772d7c2e7c45744106d53d21b729ae93614ca68bb7ec9623e. 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/QZDA52437579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e814ad95698aa2f5a49fc693d9fcffd2f2cf7abd44f02f625ed28cde0eac65. 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/QZNJX2383211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e814ad95698aa2f5a49fc693d9fcffd2f2cf7abd44f02f625ed28cde0eac65. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZNJX2383211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fa067aa11e81cfbce5764137a0f8e5b0b01640b3976de9df3aed07966ba6f7. 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/QZNJW2330540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9d55374ad4f59f7e82d432d908380829231dc6b338f1d4cfce7df0c7033e07. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QZGLM2383702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a6efdb37bf2424d07c53bfcbb88758fe556e3b9bd27400b755c89065f14e5e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZNJX2399481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679fc619e9db8f6c9dd4049224bf50097fbf7b3545cb992eaea12c681c84ab62. 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/QZK6P2296940.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38339e4846a4c50683a8634b422a0222b5ba6ce353c2a1669f4df786168ca90. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZK6G2308684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba0d8916165e9678e6d417bd9c2d830a68f55061a28134002a1c2e8d4e67cbf. 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/QZTPX2222430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694f6705235336d6557e54dc37b91c704517956993b9fe70848d0d1d64ba05fe. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZW9K2326755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978276c3dc7cd7432b98c20e13f7b35059e695eaaa796ab007a4a8f7586f72f. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZW9K2326756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff43a948d644481b156021dc5f2fd7e413c047bf10cd7a51f0c39439fd43f7dc. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZW9K2326757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cdc0ac84366d9f531133653dc784ed80a5f42511ed0580aa3ab10206adfebf. 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/QZW9K2326758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd651176ef154c58d102ee9bac00d283a6eb239e8d0b32cd077661283332de75. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZW9K2326759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60aa78a15f76f33d4b7659de035bbb5e295f4b43d29495f3b8609605cf34805. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZW9K2326760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4619148d6a5ff3d3bdf85cd069e3b760d04321c375e598913ec75298a183aaa. 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/QZW9L2362230.