Szymon is a Polish version of the masculine given name Simon. Academics Szymon Askenazy – historian and diplomat who served as the first Polish representative at the League of Nations Szymon Datner –
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 0x543310a70655eda246ce6ec01b3990314afd9679cc3b96034083a61afe465b9b. 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/5c99bc1b-5826-4499-ac62-40d3a4496775.json and https://artists.proofprofile.net/proofs/artist/5c99bc1b-5826-4499-ac62-40d3a4496775.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 0x6af023b71de6df5ee6f215d049ea6c4499e10cc599f347db7b328b028332567d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCACE1514788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1838476dd6b72292ed305d846a8e810b46a48171780f2b31a4b9f2197561b41. 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/AUMXD1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ee1d378b602eaef1d9766a4429e5ee11625abf279b106732ad99e7d9d779e2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUMXD1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa837bed737654c78996f8dc0ba806d27eec0b32b37abf0e4a04015c8afa4473. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AUMXD1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f908b86361b75d9cf7c21feec97e8e1c4f8848c8f8bcc7b9d43a6fad1431819. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/AUMXD1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b648db93afa74320c0fe5b02f54a1be562016d8e802ec7c38be1832cbcf24b8. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/AUMXD1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824f8d37bbbcce4219f8c90f0e65795380aee2f840c93ebc988959d31c1727e5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/AUMXD1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9447dcce100eaaca71b45493b31d6cacfd7148a150caa12e8f91a0970fb05f09. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/AUMXD1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a1787d313aca57a7135dc11dd6114557cd4a83240bdaab2649c059907e93b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMXD1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150aaef2a6de5f8c7af81f92634cd6db054b1b37e6c0ff4ca61102debafa0a65. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/AUMXD1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b6620ce3c3f7606da5281fcc4dda251504bb215c9aa9941e01dbc81c988090. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUMXD1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e4e8353caf4c351f6f19740592cd7c4f2d43eb8f55fcba040ecd24236e2e01. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/AUMXD1800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8948ffbe045f48c2150978c3acf75aca84899c238121852955ae449046fd38b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUMXD1800019.