LR or Lr may refer to: Businesses and organizations Avianca Costa Rica, an airline, IATA airline code LR Lenoir–Rhyne University in Hickory, North Carolina Lenong Regiment, an infantry regiment of t
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 0x73c0df8450d166b7820b39a02e304ab48568086d8c749ca6f742558a2ebda264. 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/0a0d6ca6-0e91-4a97-9c10-484df7c71f6a.json and https://artists.proofprofile.net/proofs/artist/0a0d6ca6-0e91-4a97-9c10-484df7c71f6a.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 0x19729e72c3646cad0fd9dc641caeec5536412671267dba164fade85a40754f63. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX282233911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4211f904557e7ebb9af7b705c7cc53a549a23d83fdab26a32e3d6953ee2234. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX282233912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db475455c6e329725e6f283a93688967362be9719bcc26de9e6d7c93dc87006. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX282233913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb27efc9c4018ecaeaef5949983105733f5bf21637f5d9bb7b68eaec1cb9f93c. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:12:22Z), 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/FRX282233914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a5ab2354efc3a48016633a390a0f7077d5f96c8e9beb21bef678685ae654ad. 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/GX3Q92053673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c4ec828cb7cf362c22ae2c2ce231988b4557117ead0d88dcb4fd3ac9e4e59a. 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/GX3Q92188287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee40a731c682d7bd146c71062452ae9e85391009cfbdfed83a733d0e4f82e9d. 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/UKSWY2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805d9b8725bbd2a1853e2c07c8687bd8b5a096f855eab081e7721604d6b2e990. 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/GBLFP2198945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f242d3723558ab92ef16fc1140b75c00805d93d6c38e422b35aff724c65f87d. 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/GBLFP2141042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a337017175a9714217cb068e24d912c7409bc0d2e6b59a3816dbe73136477d. 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/UKXN21926369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f3ea32d1482c52468b4a0d3d36194ca7a23e0ccbadcdb55e0ff2583d580ce4. 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/UKXN21907991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dfe17ea6b1f982657f610546618bcf7550c40ad461e0075a10c84eafa0d41b. 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/GBLFP2083695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b122c9aa1d3e84c9c5bd97a02deb27bbd41a0ea04969ad9b64f7e09eb3d099. 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/GBMA22080804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce7d4d28a3498e70c04756b9208f6543ff0ed94717166fa7a2fa5116981335e. 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/GBLFP2015558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec53e9c8166739291fc0565715b17e1fd165cc5d57f61b5a88499fabe048a585. 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/GBMA22058315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17d143ddc46ff7517a69b1871ac17a0415c13b89c78cb78e3220926d8dba58f. 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/GBMA22034891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d4e27f6a8b6dc332ac9a8a7556c262561ab32bc9bae891c500416225241d5d. 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/GBMA22013116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495aa9689a0cd2f09f232e23089ffeaf03d5508738506c00939dd5bd70c7e95f. 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/GX4LG2101481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec0be3da71246a18ca3443ea3e3e1d8ddfe844cd62077939d55bd3c08520552. 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/GX3Q92108912.