The HQ-10 () is a short range surface-to-air missile designed by China Aerospace Science and Technology Corporation (CASC), currently in service as a point defense missile system aboard PLA Navy warsh
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 0xa1ba42da0822709d1e0ac430e293907fcc7efa15e285c127a512f4296e779242. 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/cce90d9c-a0fa-40e9-b9d1-c268e35b5455.json and https://artists.proofprofile.net/proofs/artist/cce90d9c-a0fa-40e9-b9d1-c268e35b5455.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soft Rain to Sleep, Relax to Rain Music 13
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 0xb33b68c098a92ddb6cbd7fe8bd22f513b4dc6097b3674a942c09e7a6b61ddd6c. 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/QT2VB2426260.
Legacy of Leaves: A Sonic Plea for Sustainable Living
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1513a0c40d580b88c12703b4469a606b8ceb4b1e4ecd2ed7873843e5e216479e. 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/PL90N2470204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5ada1aa61c6129afae63129a2e57bf5c1f46e6410ea1d478000a8841919027. 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/SE69Z2413426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a16e178a5cfe4234b3eb39783e89fa946b2cdb624c9113a2270f81937b9e66. 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/SE69Z2413431.
Aurora Aura: Ethereal Brown Noise Harmony
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf069a0baa0f01ff4355d2939aabbfe28172f9f894ad63b6be9aa4ea3a26dc400. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/SE5IB2403474.
Cosmic Comfort: Brown Noise Ballad for Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335bcd6fa4512c469fa1025c413f0ec8eb16906feb16ffb39d1f451e675aef88. 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/SE5IB2403479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930213f46e3f2cfa52cd831e7698f4d1f267473925512427cae438bb7bd09ee5. 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/SE5IB2299707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb411ba2add1fe85fe31f8bb88c00655f7d858cd51a01ceb2f4f08bc25288ffa5. 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/SE5IB2299708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc655b726351585680875df22a26587ab8bfaa8c2522d69fda85b6ede57a0d6e0. 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/SE5IB2299709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07739de45bf6fd2855f46ef8ccaa946391bb5e63003ff96a9882cd29901583e8. 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/SE5IB2298812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37efc244c8101adec8a985bf8f0c43b9867ce977ff88de36892254da1856a84. 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/SE5IB2317903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a34ff5d251f4180beffc553f76cf44e5cb92471c39d8c4d901838671154bea. 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/SE5IB2317895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6c04492e02a2c15438cb852693c75c9dd48249b5076e19acba24b3ac87b00a. 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/SE5IB2317899.
Sleepscape Symphony: Box Fan's Lullabies for Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf394db9c5e15ef1c5b22cc07b5918b4a857edbaee74f3452f8b942d5b7c96d0. 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/SE5IB2330635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa1610e5849aac5f4990f3bbdf53ed413eabb41036be290ef5b3792862f5d19. 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/SE5IB2330639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a34ff5d251f4180beffc553f76cf44e5cb92471c39d8c4d901838671154bea. 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/SE5IB2317895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6c04492e02a2c15438cb852693c75c9dd48249b5076e19acba24b3ac87b00a. 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/SE5IB2317899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb553376d785f3e7715170bc735cb7022aa4209f42647c3d11b76d5b0b73bc0e. 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/SE5IB2218030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ae3f9bf9b4a1558959f8618fef8939e2b6e333a47d0387419ba74c4cab895d. 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/SE5IB2218031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef049e8caa95932e60133884dbcc5dbae9535a200b44bdb023d95af1e8a9e65. 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/SE5IB2218032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b179e664089cab220768d5ca7c97adfc910bdbeb7e4b5a3811fec06132d2d60. 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/SE5IB2218034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930213f46e3f2cfa52cd831e7698f4d1f267473925512427cae438bb7bd09ee5. 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/SE5IB2299707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb411ba2add1fe85fe31f8bb88c00655f7d858cd51a01ceb2f4f08bc25288ffa5. 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/SE5IB2299708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc655b726351585680875df22a26587ab8bfaa8c2522d69fda85b6ede57a0d6e0. 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/SE5IB2299709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07739de45bf6fd2855f46ef8ccaa946391bb5e63003ff96a9882cd29901583e8. 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/SE5IB2298812.