thumb|A chairlift in Sierra Nevada Ski Station thumb|Sunburst Express, a detachable quad chairlift at Sun Peaks Resort thumb|Boarding, riding and maintenance of detachable chairlifts in Vorarlberg, Au
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 0x2729f0aabd420df1add66f989b49fac282147cd2da8ff806a4cea73b41f5958d. 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/21a8445d-a2a4-414f-8b28-6273d30f0ef0.json and https://artists.proofprofile.net/proofs/artist/21a8445d-a2a4-414f-8b28-6273d30f0ef0.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 0xaaf7da1e76053aa8338451a3821e52f01b5e3f610d415d6bdaf5e14da0e89881. 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/USSM11503431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c1ccb743aaae47675d927c6c399bab7dae0c63990b0752bb4d9a8caae927a9. 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/USSM11503432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7568e475e7e2731c9bb9897eebf561bbfd4a9775bb13e08355c67b02dfd6f7. 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/USSM11503436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cc67564a3c30b3b964ab662ffcbc510dc7ce133a41e2cd7671420cd024bd3a. 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/USSM11503437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac8477a355062718cd0c2e757ecb4df4a4a4390467a63af2a3de432a8dd971c. 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/USSM11503438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca9d16db45debd85fb6c14a9a7777d70200e30047e2356833ef7b7ec329348f. 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/USSM11503439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc07cffe3d845241b80e8d137cc1d34e751cee6987261e50978109cd02056703. 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/USSM11503440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9759e28cf2c5343c3741cab7c28dd6cacead4b54c635bc8761208f973705c1ca. 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/USSM11204357.
I Belong In Your Arms - Japanese Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6604f12acd28d203daa784eba34d0a2a06a2a03c107f94dfd0aa5ba98c904. 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/USSM11203641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2203ab713fbea0c334b5a5efef433094d1db9864c7eabc703c2999434f8a4ae. 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/USSM11104428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009f9c4f5aa7b2830208c4f7f6cc0545589503fae86496f71229c9c1f5dd05d0. 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/USSM11104429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34d8e6bf0c1a09abd25a0110f51294484a56c397d82df70b10b9e9ccad0d123. 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/USSM11104430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1530080316ceb5cffaf478314ef6f2f7648ecdfa18cd01812275429d8b17a8a. 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/USSM11104431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81fff6030f3467a5db6e54113f04df32065080aa1bf6bf5896c3e97dcfb1fd5. 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/USSM11104432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84225e3a3d5a36c2fc035b33dc09c51d1b7c22c9077b08b0285e1ebc232cd745. 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/USSM11104433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d832dc3b3f797c8bf500bcc404c0dcb5c0c24fbe54c57f2a55523b5a5d73bf5. 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/USSM11104434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eec2b43889bc59e5d3cc69ac7d490188ef7606fbfe90e82b532396bed31169. 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/USSM11104435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587e0fad045bd4d5f4464c5a85b06cacd1d484967163a6305f408fd493f23e21. 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/USSM11104436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278e9004a489a60a6d20e69fa0c0cc3ff4ba6816ed93d99b9607ee2ebcccb96c. 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/USSM11107295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb83c805d3ff7ef2882208844219252c2ffa6ed1398319736d227ee506a87dbd. 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/US28E0834201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a944409701105ff104338f46a65b40b89a2b35d0e2ae0195b028c0b16e08432. 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/US28E0834202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f6f4fc95442cd40091ce77bf378de4357c67a5e6b905ec19f451a44412406a. 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/US28E0834204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765d5cd5b048e2f6a474fd09dc29236add8c4d7b6c5a3482ed522c41558e6cfd. 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/US28E0834205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b6b1841f3dd28a31d7eb86dde5d989a88e0ab99eda6781cc41c276ccf6298c. 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/USSM10901044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0308b5edcacfa87f8a4cc32b5ce3f729c8a2ef86826b89b78b90c4fd1313a62a. 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/USSM11605611.
Ch-Ching (feat. D.R.A.M. & Jimi Tents) [Redux]
Moth to the Flame (Whatever/Whatever Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cc67564a3c30b3b964ab662ffcbc510dc7ce133a41e2cd7671420cd024bd3a. 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/USSM11503437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2faabb015cc54dd7c11c3d4f264e44f8d1be8bcc663dc965d4dc5795030c48. 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/USSM11503434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36862e38403eb4ff6047cb5cb689a179eaa002b6ed8109479931b3480b032195. 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/GBHLW1011158.