Sing Sing Correctional Facility is a maximum-security prison for men operated by the New York State Department of Corrections and Community Supervision in the village of Ossining, New York, United Sta
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 0xfe70e6f23c8901dbb64a36f79e58854f8fde5e886d34a058ed4565c8f550d34d. 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/ddd4c06e-74ab-4872-a107-fcbb0188f287.json and https://artists.proofprofile.net/proofs/artist/ddd4c06e-74ab-4872-a107-fcbb0188f287.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 0x03682e98bf3508937370a23bd89127726a54f5a553f11b12793c462f9f269401. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRS182132467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8d7237eaa2e4a140b42152d9bc549110e0fd3e403fb5648e22e45b57a19b4e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/FRS182132468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371834793db23da93f1df2537f6770c8242e05252dacb4e94286da139379f34a. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/HUA630700738.
Összezárva '89/'99 - Tettes vagy áldozat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdd8e20e551081fc5cb91fc1feb463f55d62bf75b969765f384e12c161cf334. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/HUA630700763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7a01acd19b98683c3313b1480fe42938ae8118b117e1168bebf39f2c317790. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/HUA630700743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76d0a49cb57872f5c4619dffff149c4195f77eb971898274bd2af244ee6136. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HUA630700746.
Összezárva '89/'99 - Tábor '96 (Koncert)
Összezárva '89/'99 - Életfogytig Rock 'n Roll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4807cb820b493c2940b8915b5681a8cb6d7ac384209f141db93c0541552667ce. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/HUA631500411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8ddade84f88ac12812549553575fc28e0be7b8b67590315f97ab89bd8412e4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HUA631500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5824ce3019a6b064ae4393d3882b8e21ce5f6bb08e323df7b48641493dde459b. 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/HUA631500417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23baa52f9fb34140d7624c04f74c081c74ea097371c73f36c539666c077c4629. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/HUA631500421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9da2af9ae56cbb035f566f73e0f88847e2adbabe550d8906dcac698633cab6b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HUA631500422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c62896e40810298d8282152871af3de3a841ac9f6be678440fa64480ca1945. 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/HUA632400568.