Safia may refer to: __NOTOC__ People Safia (given name) Places Safia, Burkina Faso Safia, Yemen Safia Rural LLG, Papua New Guinea Biology Safia (moth), a genus of moth Music Safia (band), an 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 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 0xe9235681744f429661363027c9d2601a6515fb2663abe58afcae2ec052796dda. 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/659ab8bf-4822-411a-b4ad-a009e40009a9.json and https://artists.proofprofile.net/proofs/artist/659ab8bf-4822-411a-b4ad-a009e40009a9.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 0xb332caf5cd6a6474acda55c1cbe5d58cb05185889636bb684908331b387848b8. 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/AUWA02300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167cce840c6371f020ad709452b4569418cb133f4bc790725fce2b088c42dd69. 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/AUWA02300698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb2cf20ef04dd20c12636559e0dd8c1183cbc08d83ef8aa72ea99ac21dd4f62. 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/AUWA02300711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc54a5353255b384c062082de2951888808de86fd65ad0d6012eeb2bae6fc2cc. 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/AUWA01800421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7dd73ba05312072b23be6beb2f5f5e96c69752623ddf5d08535c591ca0b469. 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/AUWA01600134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b537387783b5b2012cb46c054e6e8eec3e93dca9b55f7d3ee35a9fc3c7bd477. 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/AUWA01600136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92597274e4a3b502d951ae67c48dc5f7dbc1797ca27a12f427734dc913f5a871. 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/AUWA01600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1939225a6b95be51df224e9d39f621ab6cf19a66efdd4220725e80c479b5cde. 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/AUWA01600139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70416cbc2310cc21df14a9f731c96f3b1e72fa51b6524c0aa275ea78117bcefe. 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/AUWA01800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5836c3f356f658ee2cc00f8bae2233def891e831fb174679864f3a0affa4eeb2. 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/GBUM71601172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf217ba4f8a868eb100e11d7b3f57ada5bd9ac069d48e301f71c3ff9bced5777. 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/AUFYA1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e24186d04f145d3cb91b2e067eecbc19f4c6e5782450a8b178bf5830e3173ee. 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/AUFYA1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07f24d34566cbe73710f416cb175ed8676ed809f6ec5583d27829eeb1efeab9. 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/AUUM71402045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27af22009cd0e3af795d2f7c526bb8e8555d7abe17afe4778f1bc76eb91b9ace. 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/AUVC01437211.