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 0xc3d79b724d971ffbd5b7e7806e009caba90bfb91f63e61afab8f8404652ee99e. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bc9eff7-1b2c-42dd-a84e-62b5ac22a546.json and https://artists.proofprofile.net/proofs/artist/1bc9eff7-1b2c-42dd-a84e-62b5ac22a546.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 0x88f182d91c594d419155104f5ce3e774f40ebf7a111c53d56f7265dd52461e4d. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QT4K32543614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7622410996d8b9cd5d9748cc75b2171148613ff16ecb5462940c4e1d3573ed9c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:48:33Z), 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/QT4K32543612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6a89830673e1c0cf89009b63212dc3aba6e89d1bb7808f87b72635b64d1ef5. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ES75E2525259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1457ae00d198b3192e793c3eba81aed848ddb7b6ba23cf0dca7f12176d998f4a. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/ES75E2525260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba07c04c0ffc573d43c52a83e189f2c9e4fb418c0f362b53439afde606ad3c3. 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/ES75E2525261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28af27d6f1bd2ca604dd4a7e202bcc9d57822c92acdd6dcbe92679eaa06e09d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES75E2525262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26046f885e9d86ab79527aa8a7197bc8df67e993ee9370a697dfc0737218af11. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ES75E2525263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b30f18a7491f3c3b1128abb4faf0c37db8fd4a95afcfe7c872f6ee22d859ec. 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/ES75E2525264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee597cb75fec12015b5f9307e729bae934dfad96438dd5aa4c2a46dfe8435abe. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ES75E2525265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739696ba801f0cb65ffb1fd87b73d04c43323ce0a1595171ecfb83f2297c0c66. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES75E2525266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342c1277abef106b6e7af888a3e1eb8929608404701177844cbfe8eb1430296f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES75E2525267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f14edd5b2a403e68b1f7a17c2e659c49b56f381c5847605e1e6686b5ae49f1. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ES75E2525269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518414b779e8aef1db40d7fb952fc1cef73da943a9785369d976387cf26a444e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ES75E2525270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd005e7ec3625262f307fd0c88670970aa49a936e136f00467b5075eecfb71198. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:31Z), 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/ES75E2525271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbb0774b3d9fa7f870f483f3951758766229e25b6ecb04b5d0bea563a5faaaf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZQAY2520421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaef838c2652637ec6e5a7dbe2688f62a8a941ac2b0dcb1ba331040e8c7890e. 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/COAF42501720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cd9997b47334eba3297d414fb389efe91194a17f83484153b4a85529110d33. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/COAF42500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a2a070ea9c6605074dd183d27718a840fc31258cd03868f9e52b3b8e45e9ed. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/COAF42501737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5cb41f45efa9ab224cb2c416e051fd12cffb9cb0d993bd28eee6d274c0e912. 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/COAF42500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a04db83f7707ff81834fda52f77140467d596803dd072b335852d1cf95411a. 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/COAF42500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96402d8d9c13015e62dc093ee554a9d2ce7ddccaa7188de2fa02576097a77b04. 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/COAF42402244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bff7b4c0d5f4d55b544bac29e3a557bef3489481c96b511199127f62f9aa68. 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/COAF42501732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c674007b6e2d3c376843675c603ff527d3c721d3c85f3b1cfb269be74fb6237. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/COAF42501739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffac05b39e5028a6f9e0a0b41449727e883b1b93b7a232c8a144154d1620c92. 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/COAF42500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10f8524c62da3db500375b534e54a4b6316ee80a7ef73a6095f612d0b424791. 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/COAF42500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c04f57c6a419ab61d48d132ef892d2f0db9d6b964ada234e8dfc8659a0d871. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/COAF42501728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460d73888837e89afa2fae368641b502b543e6307988db176f6d7940972ee096. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/COAF42500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac51983d959d6c2a0591a29b75e0eb33ec9f56c2ca96d9597da0a6735c28b1b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/COAF42500519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0d4e3ffa872695c5769852f7c120fc2bb4b4016c54130fde2ecf39d0cc95db. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTLA2539214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17771c1393b473b1e423e555706d0ca0d276022b18ed7b66a9968f15cce750a9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTLA2583907.