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 0x9e7cef3a21c7ea4eae566e838a40680e42819ae0c45fd64c578e51a42997e0ec. 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/84c436b1-270e-46da-ad2e-53aacd4c63d7.json and https://artists.proofprofile.net/proofs/artist/84c436b1-270e-46da-ad2e-53aacd4c63d7.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 0x2116deb7bbaf61aa6834c392899b352f0d44eae5d11bb50984c9d989dc565810. 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/QZNWV2226413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9688774de4673e9e7faa5244dfea0d203d74a54bc54261268e9488115d274f09. 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/QZNWV2226414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15a6de740625363b452cbdd78a232c09283e75bcab1999af1950c6ac760ab2f. 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/QZNWV2226415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e545fdf76944458745ef6f1f8b1fc6b493a37a700516797d43e122263c06e5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWV2226416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f24886c0f09c9afe6727140cbd0548e611a41044678b0702ccd3b3a54ee8736. 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/QZNWV2226417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68ec2a549764a0fea77a040d972297f3fc6a06cd5731720d793023791aa9796. 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/QZNWV2226419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7c95a0512f8dadc467cc5294a3e7e667483b24f420deb454c0693f69beb87f. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:40:44Z), 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/QZNWV2226420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab70d446111f7fb3062824a2077f5ff3cccd71908677c715df2a81b53cbd886. 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/QZDA42265154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdeef13a68dc5d65632dad117b9bddb436c8fd4b7a63f6b7e75d90a830e9738. 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/QZK6Q2270073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7e19dd206aacb1e3f964fc940796dea147b4f549f80d84f6f3108aa72b28d2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:39:46Z), 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/QZK6L2315775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765dd6297099c1bec6347690481f37eb05a5ae74b316256cf0c4594ad7e482dc. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/PT2DY2400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0652c06b716c8d2d1f0a4ae9a935cb41499c49c08308e51b3581107a2a485c2. 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/PT2DY2400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf785be4f87b8276031af88275ae68f6c471c833df96a12d1b14d98c8cb94cff0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PT2DY2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce12c24163013dfe71a46e4b03baaac7c57d40bb782fdf6051440c370072df01. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:06:20Z), 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/PT2DY2400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9004993cb7403c5bf15c38e07cf28ef9b62a30a32024c3353938a79a26c026. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/PT2DY2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d97ef7c45bb56ca590b1b4f98569462263b2710fd74be4ec117c351d0866ab2. 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/PT2DY2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12102ff349d4476060005f0e3cbc59f708a45e0e9d128de1120decc57c4373af. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/PT2DY2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb942bd15eb92491fb0546f862c1ed4838a3645be6603385009dd892e040f82b. 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/PT2DY2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bb2b2be950f255062abc7595d2b843a5e9ee36fdf4a648157f9e47ba70252c. 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/PT2DY2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35abe190f3b2d2877cfb625d3a84cb9fda565103a04ab69166a6c1ea5d13477a. 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/PT2DY2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577859513a65ac4ce25c51c8127010c45388501be648ac5c5bb5962006e32f19. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:13Z), 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/PT2DY2400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a0a5c7669cda0ceecac7dbbad6cc8a757c3574e90d3d81a5c6b7b8b56cae10. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:48:50Z), 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/PT2DY2400532.
Tempestade (feat. Diogo Piçarra & SleepyThePrince)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102ed269800995604027d501f41655db6d1109f61e17e696b6b5dd7ef5c0818f. 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/PTBM12500015.
Tempestade (with Diogo Piçarra & SleepyThePrince)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102ed269800995604027d501f41655db6d1109f61e17e696b6b5dd7ef5c0818f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PTBM12500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67b0971d4bbb27341b8cf81b8aeff47318d6f86063d01885ea7fb7da702dc8d. 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/PT2HP2400007.