Merta may refer to: Merta (river), a river in the Czech Republic Merta City, a municipality in India Merta (Rajasthan Assembly constituency), a constituency in India People František Merta (born 195
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 0xbd5310bf1854ca54260e54bd983f21697b8bb7f73534691f9dd76e2001531349. 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/7bb193a4-478a-4007-989e-ce319558b7aa.json and https://artists.proofprofile.net/proofs/artist/7bb193a4-478a-4007-989e-ce319558b7aa.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 0x0ea78b02e0a690e73cfb7ac1c66bedb1dd438f86ee592529491bbaa41649f768. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FIERT1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55449ce98aeaabd9a238e6b4925d26861be3622c152404c4034702bdc04bc17e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/FI9PF2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f96e7d93fc0859055e208240feff081cb3575603cebb8500ce584ad9892b01. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/FIERT1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced75fefb2e5305e5bbceac336caa07a663348eeb07a6930901ad782e5f5e7c0. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/FIERT1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2842fb3482fefa88a5d5b30788551726bb741e152574376f3dbc4212f793b723. 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/FIERT1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d41ef168f7e69b98b73b99548a3bea8ff1524292967cbbe32f8a425b70dcb54. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FI9PF2000227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a67cfd815821ed96b209866eb212e60a097be721d2bb0c2e62960d2220e819a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FI9PF2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a8f313bc9579e560b5ddd6e8c19744b91d0e0e38574b643e1e06e2d86d37f9. 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/FI9PF2100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3601621dd32d6258606589b06cc371f782a701611bd2dcd0ec4bc30b6ea05c20. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FI9PF2200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f3caec8f91bd18a67a259cc1c3ca547f283bcd1cbc8229fcefc0f6712148b0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/FI9PF2300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70adfa1f7002eff7402b69b108ebea7023605a2d0f2f506a3b03c0c93fc95d0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FI9PF2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb468c52b5ff813d0e3fa3830333f59dfb229c7c58b92a19ffeb4c28f4805c2d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FI9PF2300015.