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 0x63acef9542ad0e3df74bd026a842a1403ec718a7c8c025ad8bb62f34a649b132. 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/7505446e-4cb7-45ca-813f-77cf5d463f8e.json and https://artists.proofprofile.net/proofs/artist/7505446e-4cb7-45ca-813f-77cf5d463f8e.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 0xb8986c8742cc14ff6c77dee2a247edd1a6493fa6f68cce08c8c0594b9a388459. 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/FR2X42122891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22721cc5e7d1b6e9de0c6d501379f1547c92a2157f76156bcea95b3e72b24108. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR10S1657735.
Добре з тобою (Jay Filler & Mordax Bastards Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c648ba53a2694843443fcadb1c744ed6253aa16bbccc2060ed8c24bab9f1f5. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/UABM11600977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5733e5cf4a0fd66cac8a69a8da328b67c4304952f1b1a69cba26830ed66c3f19. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/FR59R1988151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26e0c81eaef781ae22f12940a6dee15f73b13d601b78a28f567101044e66d81. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/UABM11900728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67da61a798bc3b1f45d690f7bedbdb5c81582e04d6caafa0e17313b75b087952. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/FRX202386257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad067e48cefbc16e870d9923a9d90ca6217fbbeb30ee7fdb05ba69d9fef6edaf. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FRX202386259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494a1f206ab5cfec18029b1f7338d1e25cdc59f3b31ba3d533dd15e05beaeb56. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FRX202386261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372799b8ae421ef26a3db68a2790178375333ad7fb0aab83ac4fd260244ea54b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/DGA0P2311205.
Я і ТИ (Для спецпроекту «Гратися і не боятися» UNICEF Ukraine в межах Всеукраїнської програми ментального здоров'я «Ти як?»)
Я і ТИ - Для спецпроекту «Гратися і не боятися» UNICEF Ukraine в межах Всеукраїнської програми ментального здоров'я «Ти як?»
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf9e7097e400249afbbb498cbc2c2409f8fabd911034456c2793d7a31918e98. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DGA0P2381169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcc8937e8f9a9f9edce8c5103a6cf993c86401e563dbcd834ce2544ec9ac17d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR10S2495397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6ff9ad618843b44c3e22100aea62e934b79ccff0d7b6906d9bc030c023dfb6. 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/UAEO12400459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3748c0f13f984833229de9a742281476443cc29b33912de7cca27e9d2420d549. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/UAEO12400495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef525c53ad6e3c2d96415bcd723d74cf33a44876cf9908df321ebc1ad4b22e2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UAEO12500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d82205a6f00b8073c7603ad3e45a55052c1b865aca97fa1bc6ee1551ebcfd82. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UAEO12500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bdf2ac7b64f6ef3cbc9e1ecacbd5114eb07969cd934ebbc2995d80ae6cdc88. 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/FR59R2298652.