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 0xbc8ed33ebbe438e4b879ed6eb177cafcd39542438b52db47552cf887b2bafade. 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/5e52cdca-19ab-47c1-844c-fe1e00e08978.json and https://artists.proofprofile.net/proofs/artist/5e52cdca-19ab-47c1-844c-fe1e00e08978.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 0xbf78e79e22c8057df73a827d1d312ab892386e77b92d6c959045ba1c26e89b5a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFM2197776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe9d43043c8b4841d4a715f1fc57fbc99a7fb8ce9e9b1cca7027d4d8872c7fd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFMF2330582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb738dd393a51d2d3d025db95739ebdfc83525a81303b38621a477fad35c9c3f1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2330584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc0893493ce62a441032c7494223e027a9d3e13e943ac098c3d8e43c07b2c91. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2330585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448bdcf31adfdcc9e7fa57ca2d30a517f904b7162132f05d4b4b0d304e797097. 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/QM6P42370020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f34c744b966e2786516644deb867367fb54955656c53ed34f7e771ad1f7225. 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/QMFMF2330591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349802a578e5f1ebe857e84413a2055ffc2a7a956f8b925973316b14f456dc67. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2330586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0a28b25cc29b616c3142c26e7212b3c694c3b8d08f6cdefb5aa597d1faf2a4. 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/QMFMF2330587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae917bdd02e4afa1a4105d4c73d5c207763d058eeb4f0bbfab47bfcfe3a2d9df. 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/QMFMF2330588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9f9b1d9ce42d6bcce93c4d17bd8daacc0742401e9a6d7914e5c34da860eeec. 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/QMFMF2330589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597dffb6eeca3d17665a186fff2c3a93b6f93a46b87b11e8faafadde0d9a257f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2330590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680abcbeb7f3857905c6e82cf9071948a0b14385b0da1936c412d02e4423634b. 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/QM4TW2389330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080599d22334e050640cca337be48bdea7c0651b153b45d18702a0e933bef977. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2335640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818b3273f41690ac7ca37e16502767ca1b4448800905ecedb8e47e33e462a4ed. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA72373697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fa65c122d8b0f09a77dd176cafeff570e5415e708b1bcd148f9b4456705b82. 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/QM4TX2332275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75518ae7c56a57efb0836e569b6d0cac1b78784e6f7fbf9a8c1ee619678f1ae7. 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/QM4TW2377257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0855659fb939e7f5aca70ab18ae4afaf51cc64a74b1556358358e4a526efe9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92335926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b819a2134132d4b3dc083334e860f3d2da35980466609b290ea0e169b1aaa8. 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/QM7282379322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99cc15263c684fda7e3009fd3dbfd02ce4b8e1458367ce3ed998037d0b6d212. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42331292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f6f0a0da8229dcf29f0a00cbbd477b0f1ef5ccbae723f6b703a1b2fabeb033. 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/QMFME2382161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e8be8522351957df1c0815f603f42c6a9f54f0bf0320860ba537c32c1795ff. 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/QZFYZ2482740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fa65c122d8b0f09a77dd176cafeff570e5415e708b1bcd148f9b4456705b82. 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/QM4TX2332275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fe4cdb60d7f729fbfbd6f41af143b855639dafb451e7dea21b85f9397cf140. 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/TCAGW2382922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071837ad0c85fc0d591fa20b503a47cc04d6428803c983daaadc491c7f839644. 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/QZHN82011736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448bdcf31adfdcc9e7fa57ca2d30a517f904b7162132f05d4b4b0d304e797097. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42370020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb7ed4100d93dd231cebeea8d8580dabf50ca433c24d0df2e5695d405756a27. 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/QM6P42213591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a12af1dbd5fbe100f8e884ef1bab6ebe6f9c448110f408cd582d5832fe6927. 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/QM4TW2354905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c36e1f751a3a9c2a1b377997651cedcce0c43babca9db58de11953364619cb3. 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/QMDA72261459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f7259f7e73308a05013f587dfbd1a27ace92c6c4a254462c1d8881452e1557. 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/USCGJ2004694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f240e48a7c28c977402f7493629f7f4e7df679e9033e3bd64ba2d8678f344. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCGJ2190595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71c0ad6d1fff642cbb5aa95d0ad06abb8207c6f875695f777130b9d52b9a307. 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/QM6N22255852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680abcbeb7f3857905c6e82cf9071948a0b14385b0da1936c412d02e4423634b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2389330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f98108c68d7bc62e769557cdc445a1823fd4658348fa4976e7423a9c39065ed. 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/QM4TX2307739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87623983bb8366cbf8d27b00c728cf2a60b3d0b1effcb741ea93f75bb5a7a255. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDY42106538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5b0df5f9bb95aafe0f53a8b65404bbdea0c69439bdfee0515e9eceb6cdb76c. 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/USCGH2213001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07f973135361fdbd69157e3ef8ca4e305596711280b225079f67de1c14b2b04. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDY42003201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772b047c22e93295f7bfa5643c23ef4f0c504f501012ff49be45dc0beb34e69e. 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/USL4Q2123860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d2aa307574f580d9129df74d84f3e810954fcb185f936f00fb65342c0e53e4. 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/USHM92128126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad033412b2e976a4178271aa1b897ddbc6328b5055a53cbb4cbcc19dd2953b4d. 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/USHM91834649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094842ec37037928e3192d12b0674b6ef064a0d221ae374e4f3a4a39cbb46200. 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/USL4Q1997454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb733d5727fd3f2a787d7340d94acea046c1eef8f9c11ffb473d0207c9f5aa6d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITF252000282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2a3c5a2d871614fe94a28f41dec5a7ccda2ecbd9816c95e635329649cf28f1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGX2341673.