Gualtiero is the name of: Gualtiero Bassetti (born 1942), Italian prelate Gualtiero Calboli (1932–2026), Italian classicist and linguist Gualtiero De Angelis (1899–1980), Italian actor and voice a
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 0xf338cbd703f05d17d1c1764c2a35ce894fd63992aa1a1f2d920d4320ea7312fe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5a54160-460a-4a98-9949-5d673c4df23d.json and https://artists.proofprofile.net/proofs/artist/c5a54160-460a-4a98-9949-5d673c4df23d.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 0xd183a7fde39ec94b9e0c9f931accd3701c667e672436d6a4e49e3adc3f70a60e. 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/USUYG1242485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4281baae7fef3f991fcdc59bf02d6c2fd347f2e6caddb2eee3a5d2b5f52dd2. 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/GBLV62018705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ab7de4112f3eec4c439bda458f9ce7a3e4804bf046ce442c85a97e8d94548e. 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/GBKQU2110572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a17408f1df9dd997023208330ecd673b774ceec559ad321086eff63797a5f41. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBLV62104525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263f754a9bc86d60459db31bee233d89d60abdee3792643e925fbc138657450e. 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/GBKQU2223308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba9e46183a12198584e8b1f13da0c13f2eb5ef6f97973e1eeb053a6c876f537. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU2270240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e260153a4931449706ea0abf7b3e24823d3c401dca9272679055b3f550eba39. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBKQU2324709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ab991960449ab63557da1bb84a5a0cf4ced44ece50af09431f16cb5abbaea3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBKQU2340527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90badd797a99d1e6e69b459538d1db685839429fe50905e3423c34335f21a623. 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/GBKQU2368004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122d2b68c3be3a812b9ac7c6c3ef7687e5e7e07f34c1585aeb2936d5e623721e. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:25:40Z), 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/GBLV62417137.
Medicine - Happy Colors & Gualtiero Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b3cc56d4bab02a80048266671dfdce8ecb2b075872be59daf0659faacd71e4. 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/GBKPL1955868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8127dff55114e5c93be8ea47c2baeaa4690f82b657ddc15ff8f8041a9ec76490. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK42214117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7739357bd5118be8c0c1af9452bc9be98cda6553c126c0e24ebbf999a1196a2. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/NLCK41053198.
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 0xf7f18420006007e384e3d27cf53bfb07e9f1029e0832c50b95fc061087cc9df0. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/ES71G2210719.