Mecenas is a conventional courtesy title in modern Polish used to address individuals performing legal professions or authorized to represent others in court. This title is exclusive to Poland. In th
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 0xc496ce48868550684242c3f2aa63e7209e7b77274cc3f498153788113c34a07e. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1341c9d6-890a-4f27-95a5-3dbbdd46ab7c.json and https://artists.proofprofile.net/proofs/artist/1341c9d6-890a-4f27-95a5-3dbbdd46ab7c.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 0x8b927825da07a24820e7fead09a04a806ce5a01226930872bf5b2742677b3e1e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZTPX2180514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4964953d11c0ad23ea9f4af4376b31483749ad6fe191dc193acfcfb1673507. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T00:05:41Z), 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/QZHZ32217467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d184a83dec2cfe9fe57ce8ea37d53e4deeed218c3f2948bf5aba58cad31c4d. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZHZ62299592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0750c5d06a7d711081ae22f0a17684732c0f95be46dede5049953060fa3663d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNJX2207748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5f09cbf40887e3a8b9bf7b0e09a924f6d2095c5567268e06546bc6fd743826. 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/QZTPX2252176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1df5a678599aeb498f7af31106216563a3af40246a1fdc5e55e3acb1efd8f77. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZW9M2298114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1350b9b0cbbb16f7fc0255a416da724bcff8886e2993ff83d88689cad3fc8863. 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/QZGLM2363515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8b0477df2094f6e0048b294b99b0dd9f8013307b46ded14dda99836b84de1c. 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/QZMZ92376209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631034bc79d02d99b9dd5413034212984601fcb7d4a431554ecd0d2ce03fb05d. 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/QZNJZ2350512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0835763e4916b7d2179164fe311380d17836078ea42b8530ece8c066262bffc2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZW9K2373281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe846180d20e33e1db31c00723c96284205594f211d53190060f64cf8bf51d1b3. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZGLM2463363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a76bc0985ebed843a2769142a6dc9bf81934641dc7b0598fde58ed073272d5. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZNJW2450768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa591f8b48b25f5973658a5d6391e71b782d015dde5635e7fc4088e29db28d9. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZNJW2190006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a1d16f47ef5fc6c8fe16a349f96478ada40ddf83a5cbb11f7a1839979baa4. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZW9M2208046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42e5028048d1e3ca2d2c2f708529bff7d73a0846adf45c6adde373811998e45. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZW9M2222549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd25305f8737383a9e8dbab00a92c060535437c7418e5f68937ba74c8ce1f566. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNJZ2200810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e7b6809a6201e61423a3284918b1ff25635e9d9a2fba7edeee0f74a38eab83. 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/QZNJW2340809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e70629bcdafaa9546a2cd5fa33546d4046e331694d9347aea7c64f58a68cf1a. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZTPX2172473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cda3d7ef425df76a3fe92f226de30c6e46f6e3608c95210805dc27584455d0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJV2582912.