Adda or ADDA may refer to: People Given name Adda Husted Andersen (1898–1990), Danish-born American Modernist jeweler, silversmith, metalsmith, and educator Adda Angel, Cambodian songwriter an
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 0xb86d32bc4c8690d3920a56185ab3610696a0e2540de62ba4631afb956276cb2a. 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/b11d0a92-3bbb-4540-a821-0a5b3c5155cb.json and https://artists.proofprofile.net/proofs/artist/b11d0a92-3bbb-4540-a821-0a5b3c5155cb.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 0x7946fe5e3fae81d807aa541ab20feb5ddc9b726c92f772dde9d5e212c6fddbd2. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/ROCMA1410131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff8042a58c350da54c16273e36357dc1313008381a81a163db188f989923d58. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRX201784779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acc69c0317e5d3f58c22335317188f9683cc42774d9b9eef2cdfbbf93385b47. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR96X1856585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f02febe37a7397479b44ab7b1c1d76e2034f9b5e217e22ac63222fd291f70d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ROGRA1900562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633f7b3176f60b9e4a2a21ac468b5dd5b178afe91665f65e737e98998f9d87d3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ROCMA2012122.
Stelele (DJ Marvio & Lucian Iordache Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb5dd1f5c7cf66c8f55b099bcfe1a9277da025c9d3abfe2281b249ef5a6b2d4. 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/ROCMA2012206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0652aa467fee9e072ba715443c7adcde83724a447131ddc3e23dc164981a9ccb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ROCMA2012099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61119d59bde64d9f33704bad84bf6c74e4f41fd5d42006e276804269c199853e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ROCMA2112552.
Tramvaiul 23 (Motzu & Cristi Nitzu Remix)
Să nu-mi iei trandafiri (Adrian Funk X Olix Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61119d59bde64d9f33704bad84bf6c74e4f41fd5d42006e276804269c199853e. 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/ROCMA2112552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fdfb0f9908a6ae39d3bf5c028a7a51aa4cec8ebd127ab77af2e5d4fffed9e9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:05:54Z), 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/ROCMA2112779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d31f5a956f7b6b47f4aa692b1f011e0ecef573740b56bb1bc63498aedd4e7f8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA0P2357560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c431402285c93c8f19de67501d2b9aa750effa7e36923b42040e66a1b671e0. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ROHPA2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614926abb66e3ee0ce0e6762dbc5c3a18e42f3d8933c50ce2d7f0f2ba254149b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROHPA2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d7d920fc8cac977bfbf53e21152396551bd1d20ef8d16479b3be4d7bf40e67. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ROHPA2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46062387a908eacef58805ba52e0f252dcb7df095fc346451bbaeb8896f9a63b. 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/TCADM1844630.