{"copyright_id":"0xda83c1aadbfcde6f23f3c0ccccb34f99ce290955ded40ca05a99c67577cf4a90","name":"The Yeshiva Boys Choir","registered_at":"2026-06-12T08:22:37Z","symbol":"NIM0240878","token_address":"0x52e165048ad63a25cbeae254bb5f9a9ecb8cfb0b","type":"artist","uuid":"ba9e7bf6-7cd8-432a-9c52-338f2bb7aa96"}
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda83c1aadbfcde6f23f3c0ccccb34f99ce290955ded40ca05a99c67577cf4a90. 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/ba9e7bf6-7cd8-432a-9c52-338f2bb7aa96.json and https://artists.proofprofile.net/proofs/artist/ba9e7bf6-7cd8-432a-9c52-338f2bb7aa96.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287de5109a01146da54de25e4fa9c3300a6dea78c61462f952170954a5146589. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM91160092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3154be3614325fbac20b8be97ac436a921b4a10ae92de5fc63894dac5c2060e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:36Z), 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/USHM91160093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12b4ee0c7f79983b9bddc7b3621f3fd54f0404052cd5d55b769118d11643c11. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USHM91160097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b73694d7c231bd01754629de763b6e315473ccdd3fff491f45063740056e26. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:41:32Z), 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/USHM91160103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894f839122c8bbb283db82913b59a0d6d5768f9710795e12e12dc469a9c4f77f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM91160104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cddc7bf4d60f149e876a7c72db6ee0b73404b904a18cb61ffc17f4028f14b14. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM91164792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d480475c1a4a0c62f15ab32429717beef3879725c56dcfb1bac2924f6f387a9. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:59:25Z), 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/USHM91164793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c7a35eb32ea2b6fefcb7336455d5317220c248beb014dfc5c7407dc601a188. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHM91164794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc5aa280e3cdb8b6d35bbdf41a425b01e029fed3b8d3379d0ca52ad2372f279. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM91164801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1797d96f2277d39806cec628ce3b8d468632858168611e4be45332da0a9a7eca. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM21001627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0dcb0e0d2714941b67eb767174bf84bf7bf7a6db40b2170d655e0c06764420. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:55:17Z), 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/USHM21001629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa530023696758461e865e3648175413a8351ef01d9cc223c1eedbc6207a06770. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USHM21001630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00b83eb71765f7aa11672da5dea33bf2b5d26f2dff0d8dffea3c48a0c606508. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:27:27Z), 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/USHM21001632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec6fcc35f89669a172915bd5e66a2cd820ba1c8dd39ab5cdfb82d787280b974. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM21001634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790a5f60411673335820a3903027348496e9d3e75e1e0ea37003718ce1248569. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM21001618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2e1a86ccd31d8f4556f6c1e4a3f521cdf852fda0a4e94925a1175526f72f8d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:59:33Z), 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/USX9P1025932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5976f52ec1418f67e6aa4d92a76ae702dce683f6f97ebf4f513566417381ca60. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USX9P1025928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2e1a86ccd31d8f4556f6c1e4a3f521cdf852fda0a4e94925a1175526f72f8d. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:40:25Z), 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/USX9P1025932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa591e0996c4056dfc74823c27c62a5769136eba32ad19f8840b683c273b2be6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:18Z), 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/USCGH1341121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204089f1a01c0d4694204499cfa6d82bcd61e69883b130fe9462cf772559aca9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM81224548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc412c4f024d4cc7b5585c50d0b7a37cf3cb9a70d67e80d9fd41b0705fb5955fa. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USHM81224550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a4731cb059f6b0f12bb79398cd5595c6aa52ed7e48700a9e5c70cf0766c70b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:35:20Z), 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/USHM91415422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11707328675ae549d87941b34daf414ad291fb8bd618e99e03d57afadd12ec5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM91415423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581dafdfdaa05cd0fa76016a4d49de1d1887f327d9139e13d30a2386b06a5028. 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/USHM91415424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92620e7f01079be20b0d5a831f28592cd2f918f30762a219aea9f34a81b96bae. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/USHM91415426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7912f07af7bfb58c385893d53dda88fd1a987368b2c6b728dfbcd30e7fb458c1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:30Z), 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/USHM91415427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712e0420b057aafe171a56d83e7caabb7e692cd690faa1f6ef8b5bc8fe86e84c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM81787378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaba9088d7bbaa40723fcc87441076b1cd122705a726b55660f7cc03fe866c89. 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/QZMEQ2057614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df9b3831dc02cab92a662ef2ebafff3de7e299b8f63227b029ca091ad0ac3b5. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZK6J2105603.