Cassiano may refer to: Given name: Cassiano Conzatti (1862–1951), Italian-born botanist, explorer and pteridologist, director of the Oaxaca Botanical Garden in Mexico Cassiano Leal (born 1971), forme
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 0xe5d5cd83709e548ea0148f5f8cf00aca45f3a364afc78ec36da125af7b3ce7c4. 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/e5106cc9-04d7-4913-b263-1871d354e308.json and https://artists.proofprofile.net/proofs/artist/e5106cc9-04d7-4913-b263-1871d354e308.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 0xe238b42342da262b0520c4fa389bf1a00533ddbeaf299533e2a2ada04c9b935c. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BRBMG7100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5511ec3129b376bb5b3846acaa4bd12a8f37eed708d68c599e9357f49fa3259. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:16Z), 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/BRBMG7100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc69f16cb021b70399998f42486b62c6cc936c77d819f4087143e06d1fce3c12. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BRBMG7100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ba816937d8d164d0cdfa92e384d8b645f5014c6aaf3d4004f05087c6bff19a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/BRBMG7100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157398c8f769c473bcf9e660a30f86cf957ab807cbf32591e4e28a074150c3d0. 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/BRBMG7100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f099c1fe34dbd295046ecf16d2062d18d0f2776c040f8ec01c858998cac855. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BRBMG7100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a2729fdd23046336d533fb695ed0ebf722159fd6bf07a087e19d479caa0c56. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:12Z), 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/BRBMG7100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd08f7bcee8577df485e53d9e4369bee4bf0035013a5947abef77aba195dad6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BRBMG7100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ed6e2519496ffacb07fe4eeab5ac69d0a7814c9213911199a5f34c009139d0. 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/BREMI7300628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e73e6e7f7526da3dc06c97946b980eacd3783e3e0f644e4ea9e1439e877ca41. 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/BREMI7300373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5115db41bddc0261865852b768db66d4dc4eb5f9478c805e71d181eb0d37227a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BREMI7200546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d72343e41f69da0a11bead526bb776ba00c16a9b773b25eab53e5a3a9d38820. 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/BREMI7300631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebd764fab2c35ede63a8885a90d377cbed95337e9277b7997d2375f8696d834. 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/BREMI7300632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5173e41a19bfb6c4847ec4743208a2ea9dc4dab3d4f131d91f8813ae64144f14. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:44:07Z), 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/BREMI7200547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0743309271e42483459306dedf0a6a85c8b13a5c4e6ed3f5463316e592bce5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:27:51Z), 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/BREMI7300374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b5729be784b8cc54d3d8e30f89b5f23a8c292dd7f6af0f832dcc5acc38ce76. 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/BRPGD7600093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3321818fcf2380b54dcefaab99cc7ca8ec40e3188f318014fe6f1cd61114b4. 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/BRPGD7600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067e40cc267f36c3a303609935105f7a98b061b9c247fc4649b354332bf009a3. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/BRSME9100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155f0065146272cfb1b68308fb0927fa2c484db97e7f31c5defc610c1a0b1d46. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:35:37Z), 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/BRSME9100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6492b47415a508af5581623d62773d99132a7d29f0faeb95b6a0d91bff5e1492. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:17:20Z), 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/BRSME9100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61921cf9ddb4752a9cb2b2d9762aba1c9d3f076a2b667856821f987bd1d92155. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:04:30Z), 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/BRSME9100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8ccbc29c9d8bad60db53ae33db98f14996d1b63171e93fc48b61acf7f040ec. 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/BKBSS2400370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e4abed99391ae271904da002fa576941ac4902bae398afe3349d59de45a978. 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/BRPGD7600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c8913d9b42b44c7183a5f2244ef7bdc974412264e6f5bb38dde81df68126b0. 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/BRSME9100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548d5d6b245c131bac933446c9c7709d194e66e624d87430be004d84c77de1af. 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/BRWHP0100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa59d4000d3bfbdc92270d2ef885f5d34571c9218bdb2187887fb4efb01a349. 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/BRWHP0100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc068451af2c2b6c9c8e8cab5b3f52724f1c400700eca25c5adc28f1b645906. 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/BRWHP0100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eddd70b0c02a6b445f0be45e87bcbc7941ead3fd7de1caa5068cda31b59cef. 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/BRWHP0100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ebd1ffce3e66850be860fca6800b1e5fad7189981ddddbbc304185ac46f7cd. 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/BRWHP0100048.