Guido is a given name. It has been a male first name in Italy, Austria, Germany, Switzerland, Argentina, the Low Countries, Scandinavia, Spain, Portugal and Latin America, as well as other places with
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 0x5906079de2e301fcd6a35adfdacf05c39b56be226e225034ca087433c5804f4e. 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/70ceeb72-cf00-4e81-880b-4a5478362821.json and https://artists.proofprofile.net/proofs/artist/70ceeb72-cf00-4e81-880b-4a5478362821.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 0xde993a9e349a109f3b08a21fb6aebf181c3d6234cf2827c9a1e1bd87ee5c90c5. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:11Z), 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/USCGJ1730596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ddebeeca8b3e6b1b2e3e10dff55ba1590f6ca3c9dd76fd905ce5f4ca4e8391. 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/NLV3N2000016.
Liefde Zonder Grenzen (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f5667afb073cd4475638a294a83299d305fbde81a7f878c7eff46e2b85eecc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLH5R2100647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f3379c4a9ab91bac3c76e43d9f9f8b428c68d308eb8e5d7016c704178ffb32. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLH5R2100648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b89a06559eed5e542a9b9ee08f0144a4e036c30d61cb8d548f925029f24cce. 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/NLE9P1600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa468eb49eef7aff4dae1c67fbcb809df61d856f2b2ffe7a74d049dd7d666a1a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLH5R2100655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7165bcbeb80c86f713b057186c65186c93e6c8880cdecdbf38991f8a768a6be3. 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/NLH5R2100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f84777fb3b9139befb89a9d030bd50ec1991d1528d3f116d6886ee42763dadd. 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/NLH5R2100665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5032d8237370114f835f88efecad285a5bf8e8df1cd9b518018f46f2ced313f2. 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/NLH5R2100667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b0dfa534b24e09877b504035983d14b72f523c062be51e508f128e2e47537b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLH5R2100666.
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 0x53f255e7688adf3dd28aef101a6bf569b6d40c90bc126d6de28740ce81fe1fc2. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/NLV3N2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc363314c4361f4f90ead1ee01e5a0ce0877d32a772c7f14164674c866221baaa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLV3N2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6242605c546fca33a53582bdec9cbacd8423e8df2b44f0a9e6dab89e8bfecdb. 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/NLV3N2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d670158006ae4090224e74e78e33055b50a0b3b1cfc45a4fd2fce606948ce65. 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/NLV3N2300038.
Dichter Bij Anne Frank (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4fe9606bcc0c20d05083d81834b6cadbd97cef49852f22624d6b5fd9bad4ed. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:33Z), 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/NLV3N2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10c1bc027c2c4595f9a7f5d317858d9da34267249ecc01397b7c1eaf3f0ab2c. 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/NLV3N2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf07c8d994a5c947cdb24060a05843b780272bb4834ef89017378c8a17408f5f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:29:11Z), 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/NLV3N2400054.
Krabbé zoekt Matisse (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadbb6b6a1a505ca49eed40eb1f7180bfb56c739eacabfed131b606cd2f1ed4a. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/NLV3N2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb60681f668b23ec8919fb666f6c88cbeda18a19aab3f24e37c69bf21eea6b1. 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/NLV3N2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdff3dc6d0c2d864743727d52f80e004585c0ab004507a5605cfbce9c267c5a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLV3N2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdff3dc6d0c2d864743727d52f80e004585c0ab004507a5605cfbce9c267c5a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLV3N2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcdafe84cc8b00dec517cf966b57a4f0377150d8c52050fd1a6eac3b9c704b0. 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/NLV3N2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bca13ca0e7a5a93912e0aec7b3b98ea4dd99a004e5d21f839b47048532771ef. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:21:11Z), 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/NLV3N2500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1e3c5eacbc7efbc93de5372e2d31a8e47ec5c1aacd18ea453568e232cc864d. 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/NLV3N2500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f795d54d98f81d64138cef73985b145835e5471e525289e37103c83ecc172a4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:21Z), 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/NLV3N2500080.
Perfectly Imperfect (Original Motion Picture Soundtrack)