Maa or MAA may refer to: Arts and entertainment Music Maa (1998 album), by Sagarika Maa (2007 album), by Rajaton Maa, 1991 ballet music by Kaija Saariaho Maa (2019 album), by Zubeen Garg Film 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 0x8f1589a15a26004d3375128bbb3b50ac2983b15e312b23d250c06f94a4d0f50d. 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/3ae8ed9a-8576-4918-b305-193e66680a28.json and https://artists.proofprofile.net/proofs/artist/3ae8ed9a-8576-4918-b305-193e66680a28.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 0x64b6c040407cb33a1545ec97fefd039e48c51421fabd51beb3f5b97514ca8954. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZPJ32361331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd3e7582268b9432c73ac3e1991cf4fbb3e428d69593c59175f025317134ee9. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QZPJ32345138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0367048f80359ae2de29db5ee0e21aab5b1cfc1354bc79976bcb4fec6a48b0d8. 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/QZPJ32344092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bce06286e3ce5019485976345305ca8ef8ad95308c0ebe217146085ddda5cab. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZPJ32345457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353d674ba4f40149f1722408689d8c4568b865d608c2e3321e7ad6d4cab03990. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZPJ32355314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd70426799d477c0cc20da3c986c4168ffa403d7c404317901cb45b1a1e222e6. 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/QZPJ32347888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe772b530791ca970aeb3894f7eeac86daef7696abbb75ee8b488ef0b71d0775b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZPJ32331523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5584d2b2455d758693c465d453a89239ee9715f8b38cbb65569c3060bab02d. 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/QZPJ32345450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1e5ba8254cb617e75f4ef6664993c04322d051a4107c46b7c32b14c4e0472a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZPJ32331393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa477d509009626b3a8137d889818844178aab430394c1d31251eab4ba2afafa1. 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/QZPJ32231551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50adf21c360d6c05c6e2eba1e8121ffa6f3857d3ac4700de57bf2244bae3dcc9. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZPJ32353863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2b060a1bf9ebc4a412864aba323de87e5711907ddcf8c9589efa698e455784. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZPJ32346016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841505595c80e14368eef5046fdbe706e8eaece50ff234c5bffd521664797703. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZPJ32354548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf76753cb1816fccde658ec336fcc4d5808a73e559d027fdb8647900acfab03. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZPJ32344874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd5156f3833fc1ba278a4744fb456e81ffe61882b43530a8abd8b6dee3301cd. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZPJ32345714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153fcf5f142f558ae777063ffd9c97e2a51a14b586eac438dd61eadbc32fd8c3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPJ32358463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c69017aaaf8f0171dde432cd438b274399e1a1d2d4ab3fa2d74a7219a52b22. 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/QZPJ32344883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dec3ef3b8289a51b1072357cc1910dac4f42199cd3f2b7ad24518daea0cf643. 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/QZPJ32330154.