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 0x9592f429b491d89a555bedd4d8a1a2ba9feb81f30be6ac748aae448bd9f96ae7. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a76508e9-d2ae-450e-b7a1-c27029c07553.json and https://artists.proofprofile.net/proofs/artist/a76508e9-d2ae-450e-b7a1-c27029c07553.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les meilleurs génériques de l'histoire de la télé, Vol. 1
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 0x22bb5ceb9e2682ed5a6d149abe5f91656306813767b222c3a5ddb5709562c40c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRX080600415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd401619834c1a96f81f2e891430f9c61c2a40d298b6cd4ab3911ad3fc6ad26. 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/FRX080600372.
Tv Toons: Les meilleurs génériques pour enfants d'hier et d'aujourd'hui, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bb5ceb9e2682ed5a6d149abe5f91656306813767b222c3a5ddb5709562c40c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRX080600415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b1976948ab778c7d559d00dd086d2f101ac943e577046151e5d13cb4a5e0fc. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRX080600433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e89d79e6cadaab553ac4c66a7ce1c819e77fa7be9ef196a63816becd3a8a40. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FRX081300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c17ea01ed9cbda9e6611dda8a205efcf9cc90929a36987ba4c7f80cc53f434. 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/FRX081300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5733a5c5a2f814fd9b35e38f5e9dccf19d377a056512e82b2f9ea04042d246. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/FRX080600955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76349fe5aa1162d3959d55f20535887ca23a08fad5b371ae19bb33211e946565. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX080601079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0486dbcc700d2385900ad1595aaf721bfc96febf4243e79ef81484c7c87c3a. 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/FRX080600941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd401619834c1a96f81f2e891430f9c61c2a40d298b6cd4ab3911ad3fc6ad26. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX080600372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b1976948ab778c7d559d00dd086d2f101ac943e577046151e5d13cb4a5e0fc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRX080600433.
Tv Toons: Les meilleures séries TV du cable et du satellite, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84cde6bee65169a5cc165da4ca0290c7a5383e6adb61bf97f58dc1d5a53a9b6. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/FRX080600326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5e75893a557471f3e1fff4bbe74b2d3a9c530ed0bb8468fceca73334fa636c. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/FRX080600344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d63c3c1edb77b44be0be4d1366706668b4315df555345e89c6a94c0b60579d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FRX282460757.