Quercia is a surname of Italian origin, meaning "Oak". Notable people with this name include: Boris Quercia (born 1967), Chilean actor, director, writer, and producer Dylan Quercia (born 1985), Ame
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52326f5ad1d00fa7b54224df60bf2048e6bbaf6361d1b540cb6b2a3a03ebe953. 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/3fb239ff-ff64-429a-a079-c4154248424c.json and https://artists.proofprofile.net/proofs/artist/3fb239ff-ff64-429a-a079-c4154248424c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a705549872ae03496202730786b69c8fefe755fb6a863255aed7136b9f4d83d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:30:40Z), 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/QZNWZ2483506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618b735ab126b820ff1b43e50474bb09adc6233c47a0e312c6d9e3cde29e81de. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZNWZ2483508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d22700e0f2eb0565147e2b48b6352a07911df0d2544c07f19e92415d30d3cf. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZES92083108.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c96f8ae0a01760b41cc1325749eacdb6de67f9a849b59baf7ac127fd053425. 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/BGA471903723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6e40f52faf89a836d5ffbc10cd694e998c15e3dca0eed8a4717c8f39978f51. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/BGA471903727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe57014a2bf6ae2d9ed6689286a0d11f2cf6921fdd5b1c902392c6f0d833378. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BGA471903729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302bd0b5ed32343c33b87066b7135e6c4f9231c9a2c231d3757e073d106a7d8c. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/BGA471903732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c89dc9e17c2c7d5d0eec44429160af9fd7082fb1f7f641d6e5f604f2fb1322. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZWFF2382608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14cd55d29684240fe6074f432a52b26dcbb34457f98dd27f343ed702b28feda. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFF2382609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6845060774151f233a87cfeea75b53072df2c13e323583faf9f5f51025123e. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/QZWFF2382610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4755067adc0bdf84cd4f3e9ce6464e25db69cdcb3e2bdd51febcbedb832931. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFF2382611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6c1dc57fdf0034a625c82199021fb35f56ff223fcb897d892d226fcef3bc94. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFF2382612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9345907b8c8276f60dd664dbde95816711fe28c7aca2e0c091f2e02b7930aebe. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFF2382613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf04341b859ed3108292326b0809e00f894c4a11e5b374046c99a0a3358e277. 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/QZWFF2382614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b408dad5b003926e525c52d3cbd1eb97c9a2f3fedc9fcb3eff7b0a0400345d0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFF2382616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c24e4c07fb0821103c867845f7d008e343b53073fe8989797d2630bc427726b. 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/QZWFF2382617.