ISRA or Isra may refer to: Al-Isra, 17th chapter of the Quran Islamic Sciences and Research Academy of Australia Institut sénégalais de recherches agricoles, the Senegalese Institute for Agricult
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 0xb024f43aec28effa6a7ddfed281356d8a2e47167eac1d41279bdc7103daf79dc. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88710bdd-c1df-41cd-90c7-944d88b8a321.json and https://artists.proofprofile.net/proofs/artist/88710bdd-c1df-41cd-90c7-944d88b8a321.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 0xf4ab60ab5e6e775db80493e83fca5a072d896a7c11530bb5593d9debb971ce53. 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/QZTAX2249011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711612379410feccb40e1d7f9c9f7b431544ed91115d686e612917bd0281c88d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZFZ22001629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf593455be8a56b53ef1e5fa97193ee0ad386a21e56a084eb7dbbc10bb2b4c54. 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/QZHN91904117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec7260a473fe80ea616e1d284336daf3fd1ed7f3050ab318e4102dce609d524. 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/FRX762426752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5167138444342fc974b1aefb760d710d759fe71e12310762151b99d09968aba7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM4TX2423038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ed426a3b7cbc51048315c406f6dcfa4dc7f593f93e4e6b440e96f38377f575. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR59R2456707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ad2bf12e7dd2e1facb1d29c0ccc6b0f589274e407f7ced31b7dc2401cfac38. 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/FRX872331464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee7b4a83b364ef4b6ebb3c1d3c0e047cc9c713f29d629f4e339b58932a802db. 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/FR2X42342540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bb7af3d6d3504cc2765cf9995a38a95cd0078e993b9758bde8db0aed55f429. 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/DGA082217152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8408fbf7357e03325c2af27a45a0727f2b0941bbb2110d0d22ac5740e4343a. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/FRX282236647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8575b50f2ab4491a9e7bd83047c0418b764b4e9f1259dddea6916d4d9bd1f8ee. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FR96X2236166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e39ddbf29c6903a5fdae6f03a254f6993c4e95cd9a58ef08cb3e248ed9c030. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZTAT2142029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0c730aa7eae863463923e8fe8a7710bb17ac0f32c172bef3192e509a4bfd76. 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/FR59R2122174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b1fe180046130e37f72099e881dfec5ead2a3464c23f1d13ec0f3612cd1ff4. 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/USWL12100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0956e8be58bfd69db7f43d294ab55282f6451b6d18453e6cf0ebd14826e9a917. 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/FR26V2079559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2c5b5c2742c6ca936b503cc1c0ebc2e076e72015d3550daea5170261b7f09b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZHZ42076593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e65d711c504a95a8c6ed38343e450db506d98e37725d14c4451853e6f52850b. 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/QZHZ42022499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711612379410feccb40e1d7f9c9f7b431544ed91115d686e612917bd0281c88d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ22001629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e268125e3c925c436265ac16517b928302576c752f3cc3fb14b77944f1b326. 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/QZDA51949181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0ede3215c8696802a0d66aec7306a4e5b399272e6906d5184ee7e262ce492. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZES71885273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c1a32ae947d984be6cee1d28f5a4cdd70bbb9dd3979ceef929c4a2569e655f. 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/QM2PV1853170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595498150e6f98f6bd8fa24417a91d3741f3f0ccc14a638d529f176d0905898d. 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/QZDA81818019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc050776a5c44788544072e34e77b8b3e3e5af0b7831c002d8bdebbb00bfc8808. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZDA51841126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f91fc6805cd902f00a2b11d73fb4185fffcaf4fba2df4772bd6342559d3a84. 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/QM4DW1849462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f7e2695b5dc70cd91994a6a751fd33918fb6ab305dbd19df2ebd14019d15de. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZARB1832321.