Cité may refer to: Places Cité (Paris Métro), the metro station on the Île de la Cité Cité (Quebec), type of municipality in Quebec Citadel, the historical centre of an old city, originally fortifi
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 0x83eb4fc7001e2e9c7d9286285eecd6f18daba65b6d3737b98dd00184cb2d0a22. 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/f118a5bd-bdfd-4d6d-ba12-936132facf32.json and https://artists.proofprofile.net/proofs/artist/f118a5bd-bdfd-4d6d-ba12-936132facf32.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 0x97ad7f90e7bed3479d2efcb0dd6ac2a3a3f0ebbc6affea760523da4244fc5658. 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/TCAIS2447618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe118a70c1423d3e0f98066c7199c6f0b1958396bc69ea33f94a007e7cff09259. 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/NL3GQ2100538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e46f279f6c4ad4f9af3d116689c70845a2f9d83ab57886c178d6ac3ea6d19f. 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/NL3GQ2100520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd673ea7c5d469a2f9f080bc7413bfaed2df17044da74509d2a8e39811ad2eb21. 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/TCAHX2433761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b477a3c623d704800c11ee178ff1c9b0e7a33c05ca1c107839461058e8321f. 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/NL5MF2102305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e411fc31dcde355a811cf1eeb52e53e042ea60f551c25f1e2a65944f05c44. 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/NL5MF2102306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fac06328b7c592e44026dc857ef2654913d9e928e263d99321429548096ea3. 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/NL5MF2102307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa38a9309245c123ad6a6ded259fcca7722a2be940e8adc2157a2d8c0b68d464. 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/NL5MF2102308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a3a34663db29e2aa62934f0d46e0a3d397ee9702b0976688d9c64bf6b5700e. 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/TCAHP2384220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613592ba7b45dff3f89015fc22f7d335ca5469f792609bcf8d6a2e3351c65478. 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/TCAHJ2311023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90bf600e3c1c794fab6a88c5e6a1467a9eaac80637416e6820525dca1fbc0fd. 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/TCAHH2323871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00d112f9c6187fc1b0a5e2e3e952fa0aa7f9f15326a1cccbb543e355342c274. 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/QZNWR2309623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd3d6407751d7378ab9dc494151b26d5e7e79618a388efda956687105280340. 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/TCAHC2302351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eb3d78c130f42b7cbdb4e48d0b4db217a8727c7ca5ddd875df5aa38a29a020. 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/TCAGR2209076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b71a20a5848b40f13cec4732d4907047e213c91f0ab74e50d1dd5ddd9fe2d43. 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/TCAGO2243572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48724c9f7d31b0e55b84209c481e91bda3f5051e39b6b16fd094adcef64ad3ac. 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/NL4NL2216336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e778f9618c1750e9ba3d6d396adcd5f794b57040870ac1c58a5fec1b43ab3f8. 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/NL4NL2185962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd886ca3ab4262f3102f4531cf8c3ed12328039614c87988ae3553150f3aa8dd2. 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/NL4NL2176857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccc82f99c19c3f3c9753b9c34c1fcdeea0eb1f83c6eaf4677bb84b3187872df. 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/TCAIF2421257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39899642dcc2b9047e4d07c00873df2be3ffd0292d03a6496452147e02a9a764. 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/TCAIF2429559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807e0f97f040d8e1c75e98f0f68eb3aeab06b53a4a94b216f057947c782de903. 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/TCAIF2429587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b715d9ab7754431a431fccde05d2e178f093ade61bcfaa3596c829f7844eaa. 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/TCAIF2429638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb7786b5026bd8bc9881f5847e470172989b0dca15b4943339d3fd6a1150b52. 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/TCAIF2429680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e24e44841c601afc7eb7b86a3edfb55cce3fda6e875a13ee5440bc57a4bc16. 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/TCAIF2429706.