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 0x2d99084697f0039a5994481e47f24f7fce218a1f567207a6ad569577b369696d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee568359-34f0-4f0b-aa65-43b3060f8361.json and https://artists.proofprofile.net/proofs/artist/ee568359-34f0-4f0b-aa65-43b3060f8361.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 0x4b75e6a9e801063cdb72cf6daef35c7bb87fe5b8128192f86818ae09a37e313d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB62282530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f37d6307286915509174c681d90acb1eafafe376f3bbb67a32aa3f91bf651bc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES92375606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43f4bf2adc26f331219e412c2d36aa9b14765078edd3b27e8b999a5db9c40b8. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZES92375608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b75e6a9e801063cdb72cf6daef35c7bb87fe5b8128192f86818ae09a37e313d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTB62282530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746e080a30cd202c40f3cd9366c9144c900e3b993cd17c6a7d214c12d23981cb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZYFZ2328598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23799432f3294ca01c848ca1b7942afd61b30cd5b07f787d4ad4ceedc064999a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWY2346527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dddc1c5e8fade01fd808d7f8dbfa1479aafe02a4f081df88ac75f5419e1714e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:38Z), 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/QZNWY2346530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a6da4d76462322761e92f1b29f8c88f746645a788a5e61f9b94c19f4d68ab. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNWY2346533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c83c833149f9c15c0aa823c4f1d335d81cfd40f93c11c1ec33e9b26c4e44f99. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWY2346534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ffdd4d8b2ff5565a5e467cf364dea0f220417eb60ae13d5ac83c663d2bb8da. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWY2346535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6c413cdede42fe18858ee04475961b7b47657f4659ae8782a08e9655f50b33. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZNWY2346536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc729b9afcc93f56f658c08ac63f72a280c7f858f759d6025e478a4303fb9ba2b. 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/QZMEM2223096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dbe6c8ddef74f62a614580c7e74ff01847c9905847792b075acd76a5bc9b18. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN42287678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90535ef5ffa24e69a77ea0299bfa67405165ae70278c0e7fbb58671b2ca94b3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFJ2341617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81acc0c36c73ad3c88a56739c8bf1aba70b8e68ff572bafeaca55dc9faa549ee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6M2455581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d346e8caa97f000053325fb8c9c10296ce8a77fd57878da9e4a24277506a23. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6M2455582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8561e1f55938aa570cea752b9badd591eb3c6e191807a068897f38a753c279. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6M2455583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fb1ffdacbef940f426a11c14b9f3bf91f3f09b1b36a700f52b38d11e6f2c38. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:32:55Z), 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/QZK6M2455585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcd3aae45155afb75ad5664fe56ef2e9c71a0e570d4207635ac0421be096255. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:55:34Z), 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/QZK6M2455586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a398ae75fdde461fecdbaec9900def91f3a5300190e0721dd825fea6dc41d3e. 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/QZK6M2455587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c3e0910bd7d86f5f051272becf0d7d578f0172f1089e0f2a3d1cb321de56c8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6M2455588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0537cde14ce5f2bc9a8247e36039f048236de2fe256de56d77bd999a09f352b. 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/QZK6M2455589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab6d2a4d979812271932dcafcdb85e9ab2ce616285d7f20dcf17e5094c95cca. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:07:59Z), 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/QZWDW2480641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf820ef3e85cac3f90c2c6db300f1e03420ebcb9a3a195e22db2c1880c311039. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDW2480639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1973e0d813e3a66bd95715b680bf2a71951788de57d4191431b7d3b5cf47e0db. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWDW2480642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c6985c05535e2917f324b16d39c49acbf6d79099d5c1ba1159533922a40ece. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWDW2480643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f2ed00bd9307801a25ca082777c58add6bdafebd2b2c01bfcec748b3ebbbd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:13:11Z), 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/QZWDW2480644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34d6ccb0306e6ac2ea3ae29579859b6fe88c9994106890a9a4085095b95a106. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWDW2480645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6350ddd19bb86f899f9cbceef2f2dbeca484ec26f423219739e206ed184efe2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDW2480646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efefa29678309ad6c91ba8c2c005c51df498f747c823f050b35213d6e7d80a4. 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/QZWDW2480647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf8f0db2d218521adc43ebb50f0ef10ed11195694b4410082439e5c27b66c77. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWDW2480648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42559f691edb29d5f63691c9de6de2f2e8adcaaabc2027af69cb7a44f63dad5. 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/QZWDW2480649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bded6000355065835fe380d7d0d1a53886a9ecd5dea59f1de38fca2a4ff1c66. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZN882409201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a62aa6fcfcdd117275d8ebfe6499539aa1d7da6c3471f914b59b576cf3b185. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZN882409202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d14c02d614e3aff8c556484118a232ec2db081060fb2659640682f05caa880. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZN882409203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5152326000e0c786f99c6ab1be90d04c6f00fec11623f004355717d5fcf072b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZN882409204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13ee0cf4997dde8f88370361bccf6dee602701d2fd8937418e5de4206cdb03d. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZN882409205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc999219f20815f087c41ca1cbf570b61747b4717fd376812714f14e73c5864. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN42555240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e44e3e28571235dc42bcc6dbb607268d6d88a5c28bf6de0fe43ff91bd1b5608. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN42555242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df8001338a4f3a93da8684143e5da2ecf72ddbf4e2d36a94f2f4ae055bd7beb. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:20:52Z), 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/QZWDW2595911.