thumb|upright=1.2|Mount Everest, Earth's highest mountain A mountain is an elevated portion of the surface of a planet, generally with steep sides that show significant exposed bedrock. Although defi
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 0x2ee3c95ef512dec79779536f07e6ef34826b258f903c8af1bc600332514edde0. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de1c16a5-1048-4112-987a-511f4477924c.json and https://artists.proofprofile.net/proofs/artist/de1c16a5-1048-4112-987a-511f4477924c.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 0x055168fff1c1238a5bcfe9dffa0b1ce8666d3a8e4affb05b6b4cec3616957e2e. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GB6TC1961001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2310bd9655f64a497b060dc7101417f2b71ac13bc8acb0bea401793359bba. 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/NLCK41066434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d7a3931c430f4ed07ee3738fd030fe9d15bf66da0a65e629913a8d6c5a1bc0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GB5KW2100356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e418a513f049caa73167365ea0541c4f6e68433839377f903a25e2acc46c3c4. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBCJY2200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc08585fed6d3bc368d814520af1383ef8c42b681757b487c75467791afd5e7. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/GB2LD2310208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063ef142b193be08a9a7f85b52eac48c159da65a4a8172c6400b8f1fc269b24d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/GB2LD2310234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d9155e8aabda3b15e149a7ed90225fb408d78eb977b97159189bb02217615a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB2LD2310253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa560b59fb855101ff927a7fcafb8467c4e41f557b15930c15a98a303a5921c11. 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/GBCJY1900166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2310bd9655f64a497b060dc7101417f2b71ac13bc8acb0bea401793359bba. 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/NLCK41066434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66fd1ac019c78c12b6ec82eaa72249a0bd897eefcfaff0352df45ca3c8388ef. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBCJY1700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afa07f29a93bdd1241953c18c42528dfbfcaf540b67952160ab55ced297a6e2. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/GBCJY2000355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127cf3a7252667c405e895490ba0be039ecbf29d66f0e59bf0525266975e7bf5. 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/NLCK41094461.
5 Year Anniversatea Part 2 (High Tea Music Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127cf3a7252667c405e895490ba0be039ecbf29d66f0e59bf0525266975e7bf5. 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/NLCK41094461.