Mara or MARA may refer to: Arts and entertainment Fictional characters Mara (Doctor Who), an evil being in two Doctor Who serials Mara (She-Ra), fictional characters from the She-Ra and the Princess
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 0x3d0af0a19abb1929b1316a3f8b90f556d45ccfbef87f7aca7531aa71172c0a40. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/351575db-9f17-4f90-a21f-f9d5f63d6ca1.json and https://artists.proofprofile.net/proofs/artist/351575db-9f17-4f90-a21f-f9d5f63d6ca1.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 0xf39395d9660ef269814130d0dfc4d2fb74008cdb8fc279d50067de5ee306d242. 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/CZE561603503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5d3da46a99ca564f34e41fe02729fb5384beb2256136543e8950e288f38e91. 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/CZE561603514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da937bc1ea0b6fc0b373d2894adcbccdb4567487fc4e0e8a33dbcfc77c3582c. 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/CZE562002201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d371fb80ca0bcdd471f87433b9d0b21112ec1da891465e454a77b98071758ff. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ATAJ11000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec7afeb6fa77beefa41186e622d8519b834cf2561e604c3929acb8166f41dd9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ATAJ11400258.
Zamilované Duety (Mára a Marcell Zmožek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b711c805dcf74d261df5698ccb445deee739c28f601717bc084ee8a83fa5db. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/CZE561500501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aad94ba37445f6d1d3ea8a39a357d1dc87b3826a0b6c820b3bfff9b328f0b2e. 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/CZE561500503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a43811321faac554f301d0f90d52674fc96661a96b1ddce4cef8a8eb12031. 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/CZE561500504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738b0228950219972454c8a4258a01b6fbc6e9bbf5682a495059a892e25e5dc5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CZE561500505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd087779584cf0fec2e53f3b4f19abee600d115249e6d9935e9e14f2d399d0eae. 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/CZE561500506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bf0c150fa39a8d3e1e0c3d4d1a1c4aa124dafca319ebfcd30240978679fa1a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CZE561500507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62156e723b30bfc8db23e7f4b84e7f4469b5a606d08bb686b0918607baf9246. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CZE561500508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc5e6e229785328394ede6fbbcf892ccc6bb9ba78a66a215203b77aeb00581. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CZE561500509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124586d492daa7cc6db07254c8b0605ca8855ebaea9e654161a44e358f503ae4. 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/CZE561500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5fd5d75c5ac41f1346f857c56c7dc5398fcdcaed583de32f8a680681f69a59. 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/CZE561500511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3caeb24cd067ed33df9ede7bed8137ea84fcc2424f713f8b84d8b9c48588f94. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CZE561500512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc8f5986e202b1c598c291ad9a3705e3a32ca3e5d91e1de86d310b811ad48d1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CZE562001205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226e9e208c54f8158a56aaed66d092c7f957ee081e26912d5c56dc9123afd156. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CZE562001012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16c49ac11e822890a721e1fbde93844271aed54277a60837a34efa2e0b29100. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CZE562001019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf02c7d08ab118a8823b71180ed207d88913a8baa12dddbdf8191e919142ee2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CZE561600606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed6f35a36675a4ffb0a49b273a2210ac23eeeaa37d289ffe0640eefa6530991. 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/CZE561203001.