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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075765d7fc4ea2916d68af28de2a447235ecccf4f0a47c838d674085b3681bf7. 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/492a63ee-b84b-493b-8663-0437c755ecba.json and https://artists.proofprofile.net/proofs/artist/492a63ee-b84b-493b-8663-0437c755ecba.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb9223315e820a5c80e02bb9a3f7b85402691b40fed79ceff919ec5e80ccfa4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZWFM2306346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d7fbc9466e5f97358151cbf0702745c6aebe7ce576c275a682e95bceb99d8a. 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/QZTB62211500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa596ad6b3ab68d56e1d424e1affe0fa8f41c4579b2534f67b91f1fc4af9395e2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAGL2260930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d11b6f0d48cd4b73ac2b91453cd20310aa11a9221581611ab8ad2e41af4c455. 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/QZTB22379569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e1f13465081d269ebaa8586eb705f0519deb4c8b663d11ddd7c471bf142bbb. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZDA62361296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aff850c8bc2c5605eaf800f6fd2e798d8fa8f327bcfb4cac843b22fcdbccdc. 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/QZFZ32335194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6019c609941fd062bb3d1108b640324db6270f5c2913574953bccb38c06ac05c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6G2225630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe430721363d0e19dc5debc588bd474ca06ab1840d98124f61662a02e8d1ecef3. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZK6J2258541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9848f76c233004b627bf2ab3e772cc71d820cfeab15a609d7b84bc2ce7554fa4. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/SE5BU2244719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f36d511e80bedb8e33c64a50814cb70208ea77909aba193db9c38bf6e032e9d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZNWZ2180477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab93cffaab9ea8e6f422d3de27ff833f27f2171080c1a014cd76e2f2aef03747. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZTB22304510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bb3fa4f712650515da5ebb7518c82020e9d2cc9cd03dd0855ebfea39fd4823. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAFN2180757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5d0bd5030e9a593b677c42595620f95699d24cc1d2dd6074a56bb5eaa51d61. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/US38Y2430125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd535729b866fcc659d0d06d51b5923aeba81cbb944cc9843c0a6722fe0c165e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZWFM2437641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa319c2861ac4f40d0454494c8b73798ee4060870cf31a4deb1e3ff07aa66c054. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZHNA2333579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aff850c8bc2c5605eaf800f6fd2e798d8fa8f327bcfb4cac843b22fcdbccdc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ32335194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d7fbc9466e5f97358151cbf0702745c6aebe7ce576c275a682e95bceb99d8a. 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/QZTB62211500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d21715762dcd23c7f01ef51882f46fd148f2ca1c2917b38644cd87d35f74733. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCAFO2190787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2763d4ec2ccc35d8be0c83429e4e18461d31aed44708ec3b8ae4fd0021fcf8be. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCAFN2157660.
Med Sitt Game (Sidey Ways On 2021) [feat. Milky]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282ef7309f600278976d7482de4f1aed2fece098b5b47e5386fea074884452b0. 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/SEYOK2054896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc259fe925c05a7fdb26f361422d47a2ae9179745e54b1c63d33f24d048a33fe. 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/TCAFG2097540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea14c9f5dc598f93e9fcc6ec8478a64845998c560becadc7d489333de7ad02de. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/SEYOK2053463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d95e1e097c394b11c934c28c36435f9b904b67b435c18dcc7aaf630dcce409. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/TCAFF2007189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29be5a1d25db485a97b86cb8dd259512087119b2d33aaa94f9a7a38fe2f735da. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAFD2062450.