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 0x4aa71ce8e4022d102700dd71b05cd26c508604cc6a0ab91390c794081faf4d30. 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/e0ff031e-4e03-4c82-8876-bdf9b1e39ac1.json and https://artists.proofprofile.net/proofs/artist/e0ff031e-4e03-4c82-8876-bdf9b1e39ac1.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 0xa370ea506b9da63d135ed651af99841b838d97d0e0b75455e1ebdff850025583. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/IL1011120941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd788aa25a9f63afb287e7c9e5f0f7001dfb8632175e509e94c5c98653aa71132. 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/IL1011120948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c1a5274e70640e422facffa5746a854794d34f335021f679105527ce4a767f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/IL1011120950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1c80c2bf0a23711d4c9ba77542fa131413b90bd82938abec9242368b384167. 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/IL1011120953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65231850a5c4d854b6788fd7dd7dbfbbeefc0a8593f1066e6737767d86d07ac0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL4191002086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403af658e2f84d4390627a69e3b7068ca092d6845342313643d7f798719e6dc3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL4191002089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dbae441ab0299ed4a3a11cd95c02bdc0c5717f842a23da301cb2eb4b1a7b4b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/IL4191002097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1eac8964d7c442d14f94e4c713c5d5b09616b2edeb16df847c1947d4599041. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/IL1041100412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bfd0a332ec860d4afb368b2015503878b2b8c9580f077012826e99c30cd765. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/IL1041904642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0986d0ff1c6809517e2e9adab91baf5d1dd4518cf7505ee373af746a06d2f5e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/IL1042004571.
דן תורן- לייב באולפני ברדו-30.1.22-המוזיקה של הספר הקולי
בובה מדברת אנגלית (גרסת וואן-שוט בן דוסה)
הילדים מגבעת נפולאון- שיר הנושא הגרסה המלאה
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d72680531c56d309b1d2aff03cf2219e5c43ccef48b39b33808e4eca7a7b92. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNWX2296540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf735560cb0bc2ab9dbb1a639e0b6d2be7cc27479ea853c1141707dfd720b2822. 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/QZTB82274714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f59b687461e8140f2a2bba83706eb9075052703b9fe63d85db0e7965fd87ae6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL1042006207.
Layla Shaket Avar Al Kochoteinu BaSuez (It has been a quiet night on are forces at the Suez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3eb8e8e1da9d51310d67c9ca748fb34b36dab7d9f3b526f153401913cb0fbb. 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/IL3330506160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3eb8e8e1da9d51310d67c9ca748fb34b36dab7d9f3b526f153401913cb0fbb. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/IL3330506160.