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 0x350d68aa9851bf25e9d880710b7a7f2efe8ad38dc85a3a79430271ed28c46770. 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/a5140e3e-4bfa-460f-a1df-f39737fdfec3.json and https://artists.proofprofile.net/proofs/artist/a5140e3e-4bfa-460f-a1df-f39737fdfec3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Τροπάριο Της Κασσιανής: Κύριε Η Εν Πολλαίς Αμαρτίαις
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 0x0233530f945c9b504a0085a796962d78237baa13eff86409fb1cc2c4ac1c20f9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USDY42109620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38212d2a4f5cc3ca8eef2ca29ba4259a7e8805121815efe701fbc3d004fdb62. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USDY42109622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11eded032584ea23211dc231c54cad9049e5f9eee226dd18f5188928a19c324. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USDY42109623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cc3f0f9efef3359a7fdee29f7ae3e899784ac15372805099c757af3ffe2423. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:28Z), 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/USHM81900492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbeb894dc59b46fa4ceb8f8b307d3d3fe6cec3bfa9cf6fb3ba37d7c8be5886d. 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/USHM81900517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29797b26161e52999aa6b08bf1acb2254be3d6f0844a79f6073ab29bd8b78b74. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/USHM81900518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1226a572db111c388c5f99a0318a16bcd72e1c27228565465675c859c4ddd410. 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/USHM81900493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a870ac82562b4bd6840fec885aa9fca60fce544635013223028c14d6c76f9b5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USHM81900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd950d6eff164b4f13f6ebf72d320f6d85aca7dec830e3406c6b7523eb5e4b334. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USHM81900495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2cd69c1e6b7cb9605a906bb882f9b374b93f3d46d50ad84784449fae493e75. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:24Z), 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/USHM81900522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82695db3ba0264102c523eedc20045394fc8b7570a24e76000a151b7a47f07c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USHM81900497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e2046f3b8d38833b2309b20b3cd9df5739a8761154b955da078139f9018bd7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:06:31Z), 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/USHM81900498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf28742c71500069fa2d374dcac5f5fa85776155f0e334b1d1250bf2e72754d1. 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/USHM81900500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883f70d8a11130034d2bd873e1e047ea7a3e07cd0f29e5d3ac4cbb0ee6fa0a6a. 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/USHM81900505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb5d92838871b3ea754ed9df99d8fdf768d6cfc86a5253d46169130a308c499. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USHM81900506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9280cbaf7a7f42dde4eadeb57d38d6a750e66d47c377c4e757e5c46a44155ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:51:12Z), 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/USHM81900507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a354dc06f50dd08540a7d477f96eec942f6817d971c2d9676aafb11aa2efbff. 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/USHM81900516.