Function or functionality may refer to: Computing Function key, a type of key on computer keyboards Function model, a structured representation of processes in a system Function object or functo
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c78d2f5f444bd61a57679b4ddd024303972a8d06c36d9abba31f59afdf5029. 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/ffb5d099-3380-492f-9eaa-c4ff870ff2c2.json and https://artists.proofprofile.net/proofs/artist/ffb5d099-3380-492f-9eaa-c4ff870ff2c2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0accb6e092bb68386d9eb3867d3b0ea5f8fa3ba7511ec2a6aef0e95b93865a. 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/DELG71300457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a8f0c05169afdaacc3ce37f6ed20ba8da3d143eb621ae759795bb21fee316f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DELG71300460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48648ae929d21f8ff00ff1d7b397b3713a3e9763ab87669dc48db974ee314dd5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DELG71300462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00addf8b22f010181f0b9286a31b0f4f4775b19bbf527142a33532f261264756. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DELG71300463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65271f82f22c8f7a978a2f9902041690b23537c1dcd44b91e23240ff55f04d3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DELG71300464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6525f15e5f4ce9a1f73ef3134fd2cc1d71b8de45438852013d36cdfc60ac518. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DELG71300465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cdb474e2d881fdcd4f44c0bfd5e212da05f0dcafb73be46c4c01d3b9e0c39c. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/DEU671401550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1983cd6f1f6124b299548df18f4c8cf7741d8bdda997bc049ba11b9a7f49c519. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:53:19Z), 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/DEF271931501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368b16be4b93473b01627e57a0c7f64c92f42ef471e135dbf3b84c5b076e0c49. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEF271931506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af1e0df6cea193444edbb8ffde1115b9719baecfb0fd0d1c9f2a1655dde6337. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEF271931514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6753d5cda47801a8d17bae775e98feafa93989db4227b17b6d8e15a8b51c5c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKMYK2000001.
Compulsive Thinking: Repetitive and Pointless
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07104ac0e40a08e51c34bb7c6e8601f670c61dd5e7472ef78e4367a29fb899d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEF272133024.
Mixmag Presents Radio Slave: Slave to the Rhythm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c987b02ca98c8239509633d42dd21bfee3767ee239d28459aa370e9cef72167. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMFME2068451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d9e8c31b65b34a7a9cd79e284ce725e9785b06400c3a5f5b18438b08592b94. 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/DEU671201658.
Roller feat. Function - Len Faki Interpretation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb60dfb778c97b56274b8eccc7cc39aacd8d336de1c985144a1af8f60d5b41a. 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/DELG71400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf29db11bb6f75e1cf8f6e5802ca3d9505ff7084015e8df60a7350d6ba31871. 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/DERW31400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf29db11bb6f75e1cf8f6e5802ca3d9505ff7084015e8df60a7350d6ba31871. 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/DERW31400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff77e1153cc131ae49bb71e433f0603ad3ab27318874d59311020fe74906e7c. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DELG71400704.
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 0xd5ccb5b45995cbee3b3b8b92b2f44fb31d275c4de32d5a30331aff7ab969d077. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/CAM260980020.