thumb|Castle of Andrade, Galicia Andrade (/ɐ̃ˈdɾa.d͡ʒi/ (Brazil), [ɐ̃ˈdɾa.ðɨ] (Portugal), or [ãn̪ˈd̪ɾa.ð̞e] (Spanish)) is a surname of Galician origin, which emerged in the 12th century as the family
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 0xaf84fad3cc78a9da6f6ee3a61a8fb139b8d02723970da59030acbcd50df4ba09. 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/b1c1021e-36c6-4245-b4f8-f9249593f316.json and https://artists.proofprofile.net/proofs/artist/b1c1021e-36c6-4245-b4f8-f9249593f316.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 0x8255294bc96a612463e0ebf892000e3048edb2e6f91ff676f9ffb6a106f712e2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCBA42100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72321edd67cd93ebf533a7703e17a694c313da0bee6c585df0439fbdd67296. 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/QZ5AB1949638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8506521fac459af57f1befd43e41efd6ca3e70e18e5b9de1fbf8fd816e1a2e2d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX9BB1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076d475bad8a73c535e4328ea23ff497f1551001519f2857a8639c89b2f44c3a. 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/BXJK02300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3869db856f0a7a93179265c4e11eddb988bc4cb627b8fc8038d54f4bcd97aa59. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXJK02200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f76656cd81f3de9686868a174da17b18c7d0a12c981c7caaf29937abec1846. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXJK02200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194a6130a83bf6fbea4317602a15a1ef1acd9723e46602aff861176a1c3d55be. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXJK02300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d5b56b6f25215b5789f533ba03842bdecfd6ab1d0d4ee67084b329ee52db0e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXJK02300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba2dd51ab6929524d01e6f3dc45f40cccbbc51e14c9972902efa2d32c2c384. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BCBA42000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0043c258d4ae720411016411dc064f673820a09239bd6a3455318de281d8006a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCBA42200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfee48374948805cbc2908e498f314b250a39c50c5e2b98671f959de3b763dea. 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/BXJK02300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfee48374948805cbc2908e498f314b250a39c50c5e2b98671f959de3b763dea. 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/BXJK02300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a31836d4f65fdebb4c6776ab867ee38148b4aa9162d9460b800caf06940d7ca. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BXYE92000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd252366f07a25cc88864814b895446fde4b38c39dda78dccaed29e5eb5f1d2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX9BB2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f35cb7ef21bc5df9ded5f80ef55dbe2cbf083971885cb7dc242345079772bf7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BXSSW2300842.
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 0x9505305030e8f98c7f4bdcb5ce7b09b67c75496b8e8ee533ce38de609083d7f6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BCBA42200022.