Cindy may refer to: People Cindy (given name), a list of people named Cindy, Cindi, Cyndi or Cyndy Tugiyati Cindy (born 1985), Indonesian footballer Cindy (singer), Japanese singer Music Cindy (m
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 0xa725b11ac293f3447288d0a54f2b03a4f8e2ea107307ebc1117841ebbe2b8a95. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/447538a8-0e0a-414b-82ba-abae15e797bd.json and https://artists.proofprofile.net/proofs/artist/447538a8-0e0a-414b-82ba-abae15e797bd.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 0x23f560cdcf0fdba2c19c8a44ae23bca5126139743571a0089c3e27af8d187409. 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/QMFME2299048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7345b03e5a47ed344fab4a37e92d64a5315321a2209a01434d9ca8f4a0b51e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFME2299049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9697fe3da791fe785514f4e96f4a3c1c89b294e0d90b2e829e301cfd02b568d3. 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/QMFME2299050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0b98abf82262fdaecc56eaed45310303ae94444e73e3c60d1379ee860b8230. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFME2299051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3322a98e0cb4740cb4aa5868117379c1fecbdf15ff7b8d919b52d3a75f8a2c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFME2299052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd65d7585babd11dbde0649b0c3938d66e10ce431e21bc2a14912027c846711. 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/QMFME2299053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f814dab7d59f7c793f08f33044f8dcc04b9f2458e15c30cda33b5b939918e4. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QMFME2299044.
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 0xbbe0f45d7e2ea95376870d5fe8dc6551d20db3eef6f8634ff9ab20d41f21d276. 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/QMFME2299046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0b9a2e1f8497d1285908647e9e128fd6be8e09c23c87bf51e45bd4c2ab23de. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMFME2299047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041591fe71296dbe112714108ed2418e3eb6f3c2d9e46b27a284cefd57060d78. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/QM6N22119326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d18a4848c8209bbb275698b369fa1715e4add20a222f98e02c5e094aa7314f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM6N22119317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c74e74d560895e038501e447ef4d70d5b86cb32ef653267019477abcb156a8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM6N22119319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf308a85a7a93a3c6326865b530662e87515433a0312733b9d55c5197b6c39b. 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/QM6N22119321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e546dc51158188246fa9c946ce9ae31b2506efd2aaf376e02432e95679098a9. 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/USA2P2027968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72684b14caa436ac274db7ffe9e3bee4a95ee96465398bf7d4d52c39333a2fe0. 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/USA2P2027969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4dc32b2670035a92313382d3693e3a0e7957d44460ad2d3040bdf23c282541. 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/USA2P2027970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1966df052e8dce2fd51384238200643fd801d08a391b481cc1df3b768c29205c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM6P42404971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129404332ecb84a0ddc20d2d4480d64a5087e35d863925e43b6728b3c234b828. 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/QMDA72351423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126e90f2c7f7a78a6b5999707867f2513e5a2131f5fd970729fca57bf0080291. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6P42404974.