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 0x1cd1c7d325defb888c1cd051ef8ce7e0914cd4fbac96c9905bede2559d84f3c5. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bda8470e-07c6-4e99-88e5-60481b421ae7.json and https://artists.proofprofile.net/proofs/artist/bda8470e-07c6-4e99-88e5-60481b421ae7.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 0xc855607d8389b0459e4f8bcf56039464c4e1edce73e406df642d32d9035f577a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2095289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc37e35a06168fabfb99008653e20f4d5c3de7a07097743605e3bcb73c8c2c84. 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/GBKQU1960015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5a9e91e72bdce6bcc3cd7c8c8b1f4a93b065f28e455652dd3f2c5e86519592. 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/GBKQU1960016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a00ef7d5e06bb81994600e4884f68415bce62bb5cd3e8b1f8d7e9cbcfcf63d0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU1960017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdf599014b19d4d38b14a936ec520e84aa1d7db9e6cad365d8ec8309f84d5d5. 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/ES98I1601030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c87b8b056e19a92f8b768d8a75ae220dc978c83d1def4bb4cc463044f829a2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBWUL2450285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc77eb5b99880d815dfbb886e32638f117cde2aae02a78731a574b5938b1319. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/GBWUL2450287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e6fd8fcd666abe005f8344d24d2205d41a5ec969d1c6b6f68d2dcd24d7de03. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBWUL2450293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41df4e82f7e93d0972867f980caa7c213426738c3a605e7aee712c895580548b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBWUL2450359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19e0135356d519a2f83ca2560bd97af1534d72154d2e6475c0930a2ff3715f1. 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/GBWUL2450316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67956b33c0a305ffbfa2cdc7aae84c6e9c9b463ee1dc76b53196ad7a1f59353. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBWUL2450365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9c7a9dd99586743e6fc0dd46eba1fa4202a2fa4729057b2015d79d3ff69e8d. 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/GBWUL2450346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca945ba05c73154b028d29617559cc10cd427657bf0bc4a419abb84ea2cfc27. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBKQU1907978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eecd10d47f17148dfbc8697f19327a11e493582a26ef765c026774a2c8aa20. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBKQU1907983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7cb5cffe74d874c955b6b8e6beb13c8ba86d5391b77e75ba23752736f58995. 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/UKACT2030531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82318184ae02569c2021b543e6064bc6382ad358a4390df3911eb4cf68220b1f. 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/UKACT2030533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761f73eaa3441d02fa6734750c6e0e3e4c6b1a1c62d60b82958303060c69ee09. 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/UKACT2030535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d87d1a083b2ff60f99d02efabd1c1bdf357526b2f3a748540c1bd3050d056d. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/UKACT2030536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0abf1c7a9ce8677ab015f0be0fef20a011474217ad93258924fdc02dd7db821. 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/UKACT2030538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebe23004f63ea7f4a52e7f8af5934d10de44b4c9310e275812911985cad33bd. 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/UKACT2030541.
Glue In The Sand - Peter Invasion & Gregor Habicht Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b87f70c61ae82dd72be4cd4d0f451c3f99bf1fa54c1c621c22bc7ba80f94bf5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITUXC2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee03bf6c86a656f3377a76f05ed7f1ed8c3ee94e4e31c775d890733aff2201e. 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/ITUXC2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ea191b7e5bad9fc4f8e89e6095adc475009341ad6ce2eafe15655e57d2c197. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ITUXC2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfa7bbae0ba743cb02c9057a1a71791867fb7c1a9ecd61dbabadf210a717c8f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UK9J51400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36614a5d2aedeb685acac3f87b5d46886d919f7e8cfe4e1e0cf1815efbdd60c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UK9J51400126.