Alexandrina may refer to: Lakes Lake Alexandrina (New Zealand) Lake Alexandrina (South Australia) Other uses Bibliotheca Alexandrina, a library and cultural centre in Alexandria, Egypt Alexandrina (
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 0xf1acca7869ffb359d270c9cb8e874d4bd39c8807db73c777673ded806e1c54c6. 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/93eb1e42-8db9-4cc4-b8cf-c5300e97c6dd.json and https://artists.proofprofile.net/proofs/artist/93eb1e42-8db9-4cc4-b8cf-c5300e97c6dd.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 0xe58ef8bf7a2a9a229a186840c0038238eea8cb2a67aad1550eb125d2f3187c7b. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCACL1649893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59ad799c7a6944c73ad92d647ecb8c51cd106e645eebe26e6b38e2d8f456a69. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCACL1650104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd186a85b2c17355ce267b42d08cdacca8849b46b6635d13527a0101ff37098b8. 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/TCACL1650158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8b23f25eb94a67db628d95c786c7d6a184781ce415df264161adf597f140d5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCABW1432994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffdfaaec9ceb19a433c4b7bead8e400e910534e55b113193aa767f8dacc0dfa. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/TCABW1433048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f9b772b3d6fa3567c779c14e26691c017ef6579c6fca82b27cc9e4eaf900eb. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCABW1433058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b422abb67e3d2f14c1c1d82e288ef6fb666c6dab0559a2bab6a05e7fd5ebdc. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCABW1433060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d8a2119b17ee1fe04df120d372a2d366eaf17f5cb0b30d5f93005f617383b0. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/TCABW1433062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ba1eb1028219cfbd71df96a8e6f4fce9b4787b38427ae6fa8015f3556aeb9f. 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/TCABW1433075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff511e4fd3ad30de78c78ae2f0d2d4425221d920d52245240e7e6313a2d2bec9. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJS2535271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3e07f5c327a2e66c764aa9ed9316fb134516268c3537dedeff1f8276e44531. 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/TCAJR2535284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3765951b0f14e5a3e929ba2b29e483136edef4899d3bb2e65cc7b438defdbe. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/TCAJR2535305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9097456a9b471a1397e53e189abd2a7dabb85c2dc91ddb24ea9fdd290465fd16. 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/TCAJR2535326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566eb165cbf48767b50efc6429183af62a30657b04a64f13d6e2e4e1aed1dadc. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAJR2535361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4610f9ed8e30042308da315cc650222c196aa2111057d1c5407da7dbba3b715c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/US83Z2480780.
Animal Power - Local Suicide & Radondo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0706431ef4e922ebc5b965d2359d86725dc5cc64dbaf141273b88725b42222d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z2480782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c115861c602594f2be1c1f924fd8fd94a54316d895de4ff4d7490f92c55f3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US83Z2480779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d6ecd20294adc2583501e6df1c10a82fd9ef4e49fd670534ee48a4245c6553. 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/US83Z2480785.