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 0x0e5f539d700690cc1c11a651d008b6797c318a5725e48bcf5e03cf39fbe6a267. 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/df36c3e1-6eb5-4a32-9f0a-d18e935aeb98.json and https://artists.proofprofile.net/proofs/artist/df36c3e1-6eb5-4a32-9f0a-d18e935aeb98.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 0xd25bcaaf9ee61945b76d4990fb108fdee5c298dd888cb5503a4273c16e6a3484. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFN2562058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffff6bb8d9d9ed9fef89f2cb040c52b6cde4edd21ad1fc5e345f8795316e4cae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFN2514365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf52f2a4eaf6e7639e114c0583cdfee0c88bd2a08172c94d167abdbab04a77. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFN2529838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0ba14f7cafa9002cae13f83c50c92c343160f065007dbdb6c5c5240fde8913. 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/QZWFP2578050.
Ну що сказать, влаштовані так люди_Barsik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76480ff81bbe545c49885a069b9086db342aab958aa44f84bdc312af41abb07e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZWFQ2538951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8100a5a96292591e0ad376113901713c03a9d9bf1851b0b997065ccaf58d782a. 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/QZWFR2568359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd150c08364263cc3f079c01f7afe6dc2e77c2175170790bf5480df957560026. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZWFR2568385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d4a0f558dc85d303d7677030526c2d7a3439de7625abf15a5019c3f9cb5f94. 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/QZWFU2539168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696e5fee5cd93c187b37ded1fde63f1b4a093009d1af7bb34e1975484b54ab2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFM2533106.
Не летів би, але мушу_Remix_(Maestro_Barsik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a01262ecb48708ea17beed5d74612318f535c1f8aa7495764e27599cddeb94e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFU2581743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747593ebec58ec84cd1db03e338dabdd81c2da8682155d234f258f34e6984443. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFW2573241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024f1360fe70c720286151b28b51459da40c6388ba27225adedf6af74e1d107f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFX2569978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f6bcaccca1dc8c4f93e0ac29f965dd3bad9e22312bd4b7d97f723614b932c6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7R2598836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71e47797254886b26948631e9682de7939fe4db960bd01f2b1fff748960b1ef. 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/QZZ7T2520880.
I Wouldn’t Fly, But I Must(English_version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79219e191984e7534fcc0115cf51786022c686d0cdc24459f4bd1dc4ce660caf. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZZ7V2549487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8085b11bd7fa88cf7a90023102d1482de8f6f0a1fb5c15a8287c18e5d99aea8a. 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/QT3F32555467.