Syn or SYN may refer to: In arts and entertainment In music The Syn, a band Synyster Gates, lead guitarist of the band Avenged Sevenfold Fictional characters Doctor Syn, in novels by Russell Thorndi
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 0x7e2dbe90d15f78b3e4298e91d405c129144ca328b701543d234a3bdcb446d74c. 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/63965c5e-9bc7-435d-a1ad-af4f4073d5d8.json and https://artists.proofprofile.net/proofs/artist/63965c5e-9bc7-435d-a1ad-af4f4073d5d8.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 0xcc8fe3cce539ab56bca5d40011e9a0a42a78b304a57848f848bfad547eb7024f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/QM24S1829596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf846db3d89313f737f7932669b79ecbd07722f7bfe14a7f8760fd86ef61ea441. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM24S1910888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec1da5cd08a27bd2a03ef64b357a9c0de5e4e3d1445f6c670238d5d80377b87. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM24S1912469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d84bae9daae58c23f5201be8fcd7e4bf3fbf07dfaffdb8b223a98038bd0ab0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CA5KR1930395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80a34219b8d8a99041679f6845b1022652ab711fdf8be07afc7e8601f9a5a34. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CA5KR1934708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2195c3bae197892544a370e0082a8ec4a2aa7cc14e1a311253d7592b0060cfc0. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/CA5KR1934709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bfa1c8d7bc1056e92a7ce7b60b9608d9aec351ca9356fc57beabb1a85ee27a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CA5KR1934707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc16d2806d88d5655c6732eae72f60e036068dd1b18de555d425ababbb516ed0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUS12000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c875348847caaf2c1331a6d38f846024ca0b374be74ed3e5f8d1987fb0f911. 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/GBKPL1973519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb4fd9c4a4abddf8fd06855ad36c3242043142a6cffc00950b2a6a5c832715b. 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/CA5KR2117522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb4fd9c4a4abddf8fd06855ad36c3242043142a6cffc00950b2a6a5c832715b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2117522.