Aleksandar Živojinović (born August 27, 1953), known professionally as Alex Lifeson (), is a Canadian musician, best known as the guitarist for the rock band Rush. In 1968, he co-founded a band (which
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 0xe125b443a9f9dc66dfea1f6dcd3dbff331a3f855c069f4d32824eb5d1972af7f. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04d13702-ecbc-481e-862d-4be19cf7df00.json and https://artists.proofprofile.net/proofs/artist/04d13702-ecbc-481e-862d-4be19cf7df00.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 0xe18fec9ca0ac4423f2e4cd2b48c2fe11534adde9630a0d910118c7fde85fa36c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USRH12401155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476edaa82094fe42220352b7525fee48a2261d372986855cf5e31a65a8582200. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USRH12401156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4c016b7637df968d6bcd7bbecb340c03f70ea1b13b7000104d8b998e1ff7db. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USRH12401157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d5da8a7847dd3874ad3f2068e3f0a9be732bd93eef65d2c18bef7296904830. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USRH12401158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1913f3f2aa4532708060b078f3c4fcbfe38f29b4884e82276a05f9cce47bbfb6. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USRH12401159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e4033413e29921680f4ba18e5d4abb0c73c13146dfb1c76548367f38548910. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USRH12401160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2da43c25b11a58b13bd49ec20eaa9dfb3bc9389df1a3068cae5a9552ca5edf. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USRH12401161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddc74666530bc85634fc8177e3d7a44d7294f0375a9af382d08d5cbec6a1577. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USRH12401162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d9cd658ba9789cabcbd31ba33a216e3951e774dd9b694643b527553a67a9cc. 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/USRH12401163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdd79fca0712383454acfb1cc787e6c53e51c98f81b80aafc0cb3bb286e2ec6. 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/USRH12401164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2126a22604b7fd13159ab75942f1fb7d9e9e8280e4a909d2d3ea8ff1660c1dc5. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USRH12401169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59611d40e08f60c0d19ca9d6f258a0682e2eaeafd243e74df5ca64de07051bbd. 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/USRH12401165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f45980a067b9f32c58de1eb0ce2c66e780406f1a4fd948cefafcfe6114a30c. 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/USRH12401166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155ac1248259764cf8f095b9e1853e976545d43746b431986d5fbde1b5577775. 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/USRH12401167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12955dac54793db9e93fe4e7152dcd8f8b6f9ad7754fe99e95b78acbc907faa3. 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/USRH12401168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21da47fdbeb83521c03f5d4531c179cd648324ecdcee298fd991b04f4cd404c9. 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/QMEU32212988.