thumb|upright=1.3|Location of Challenger Deep within the Mariana Trench and western Pacific Ocean The Challenger Deep is the deepest known point of the seabed of Earth, located in the western Pacific
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 0x8ed44cc4404d6aeb155b238e16d0a5766a00a17c09f06013ff4f703c3a22f78c. 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/d296feec-b2c3-4c88-ad5c-8d2896229c7a.json and https://artists.proofprofile.net/proofs/artist/d296feec-b2c3-4c88-ad5c-8d2896229c7a.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 0x6529dc9e18a3d41cdee4cd9a38d512e90e2f4a52bb05ad9eab73eca834960f8c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCADR1896952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164daf2e41666ccaa35bebcacf771fa9e56688ad1d173623af1fe05b70aa0d07. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZ8LD1980138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55faac6a82fbce04b5f92fe06ef90ba2a44e829a9b9aa473e8e6c05770b2796d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QZ8LD1980139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65f7675269b9f9953ee4ed090bad61b86c146f905e7aaa03a98583d2c73caeb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZ8LD1980140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37027619f0676864d9e714b94f1ae406f10cfd4552e9f4632ab82212b469137f. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZ8LD1980142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda9f8e80fcd6ee609fb198bf874181c2c84ea3441cf58fd3c26320ae17dcdde. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNWZ2098551.
Like Giving Wings to a Tiger // Hollow Bastion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1766fe6bd9c3c7aed1cd80a5da7be36d53415667e89870dc2618a9fce836fb90. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZNWS2129905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8717d2e3dcfcb4e54951ad1ae4feaf57dc202e785fc9ba6b9a1dfa1239a3373. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZHNB2108738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95693876cf75979bc16bde05f5d063292252cbefdb76dcc4880bb29ec71eb880. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNWS2129908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3868227a047936818c3689d8983522c6c05a31719cc42b444abfa5acae34f51. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZNWV2291836.
Like Giving Wings to a Tiger (Vocal Version)
Like Giving Wings to a Tiger - Vocal Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72be82550c0235f8ebb211dee9767419fcdaf07497b2316af0861258d333499. 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/QZK6P2305730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425316cebf3b32fb975f8fc2b24f43f8a22c8ad9d306b3562dc516f56b14e03c. Chain 2 (Bitcoin): anchored in block 957957 (2026-07-14T05:10:34Z), 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/QZZ7L2464865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5febfdb408dc81d3d8e2beb10cc465d9ea0e4d93f0722b939de1436e1eeaa3ad. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZES92517884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4015567533067a9a23c6511f59b0d429b8ab8e626c3f664ff654beedec868feb. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZDA72525345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425316cebf3b32fb975f8fc2b24f43f8a22c8ad9d306b3562dc516f56b14e03c. 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/QZZ7L2464865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5febfdb408dc81d3d8e2beb10cc465d9ea0e4d93f0722b939de1436e1eeaa3ad. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZES92517884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4015567533067a9a23c6511f59b0d429b8ab8e626c3f664ff654beedec868feb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZDA72525345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425316cebf3b32fb975f8fc2b24f43f8a22c8ad9d306b3562dc516f56b14e03c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZZ7L2464865.