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 0xf80f53f88f41edf3e0c0f307ba57d3fe56d3eb50726d45015f6c65265f1ba404. 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/66f9c2a8-3b6a-4004-bce5-ea9408c76e22.json and https://artists.proofprofile.net/proofs/artist/66f9c2a8-3b6a-4004-bce5-ea9408c76e22.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 0x061b13a7db4d867ea17f6c6bf4dc48c7971c4dae3cec4a943c16060f46da1e66. 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/QZMEQ2359558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180c36b7b6fb8af7f9bed67274b66c407cdcdb8001e50398de7156096b9d5d0e. 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/QZK6G2326589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560. 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/QZHNB2390668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6. 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/QZMEQ2359559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43. 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/QZMEQ2359560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b98d2bccb653848da8213e615fede2da9a3d8e4aae7be59ed7e0ca7a9c47923. 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/QZNWW2395861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad30cf1c193912b6062c3754446baf31e468301d1e3cda5eb1a1adcfdad5da4e. 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/QZTAX2313265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27a433a9451132b06be87f5f4e26733493784dc38096a8608bf1fd71cb1baf5. 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/QZPLR2376004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0a88db62c750c7dc2f99116bad7d35dfaa76df5f9e93c957212155a7cfe717. 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/QZTAZ2338010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa4d6c2ba42bc1c6d0d800792842186aa5d8a11a2b8074e9fbd403d2d3751f1. 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/QZTAZ2338011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fa015c1b2c2cbe56da4fc70f88517bc5e655783c008bd638bad0fc404f8acf. 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/QZFZ22214841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931f4705a41df2310425a5ba014bfa74d48df187fe0e59399ccb3c1086a7070d. 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/QZFZ42224173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aed312eb752eb2223729985cabfb8fb796c2883d6ac7177104c34ca6ae4087. 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/QZDA72247108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3948bdd7135b1c4bb96bdb37c437405b528f60e97de80c6f9d190787103681b5. 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/QZES82229120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1966637315ba79c5b843e25102a740293abeb4227e5cf14e36728795d8868594. 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/QZHN32287954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f3c7f0e75627d957ac7c94c9f2275365e60b3fbd3f12a6418bc7c2117d15f4. 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/QZNWY2219307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4. 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/QZK6P2294654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1723573f27e8083b1761a2fa56e8a4f218968ca9f53b5408446a57d152b524. 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/QZK6K2278368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53aed202733060f89d555c4e159717b6fc27cec977c0168e54cc7b26c0e3712. 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/QZMEM2270105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9d6dd70e204f436859660bdcad70b0e237ed865313557670e152d04d12670a. 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/QZNWT2264036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bd8dcf6b782e15cbbe06b1cee849d31b9b405d7c4ba2f7c303f183b23381a1. 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/QZNWX2269130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a81f18166e8376143e150cb051350578c658465779916ab713e7430dc196c11. 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/QZNWY2219308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061b13a7db4d867ea17f6c6bf4dc48c7971c4dae3cec4a943c16060f46da1e66. 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/QZMEQ2359558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180c36b7b6fb8af7f9bed67274b66c407cdcdb8001e50398de7156096b9d5d0e. 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/QZK6G2326589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560. 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/QZHNB2390668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6. 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/QZMEQ2359559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZMEQ2359560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4. 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/QZK6P2294654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d0fdd27dc3dd0ca23b24197db443557f9f9fb328f2c963e7740cc96482c678. 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/JPZ922009538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b18ea96b4e670cf2022ce9af586b736b5282685fe82fca8f74c7e27b9ce084. 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/QZFYX2303860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe029fc8a0e546b6736741e412cff1baa8400b131dac86b1bbe15af90cac532f1. 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/JPZ922108413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4c3607065a74bff9a98f96e3dcd98bbd9e7c8504d2400948591aad7a223a29. 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/JPZ922104283.
Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318717cfd0ea145281efb878d9f69d9269d9ae3d734bd80a61364b2d52b243af. 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/QZNWY2474107.