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 0xfdef7c0c672ed0252e89123e804e528db1ee2def60683eab191f13055984f4a8. 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/e2729d76-9413-4b51-aafe-a24b960e681c.json and https://artists.proofprofile.net/proofs/artist/e2729d76-9413-4b51-aafe-a24b960e681c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ההר הירוק תמיד (מתוך פרויקט "יעלה ויבוא")
יעלה ויבוא - פרויקט המחווה לשירי יורם טהרלב - חלק ב
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 0x1a54d6987b4271524c0e4b65ae4e4549df8409c523f7b4d3928f6d353f64687b. 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/IL4432100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8b50b7a3eca3e1c589c604b74741e3c6a101c0cae533fb2cd7f80f87bd74c9. 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/IL4432100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe419ce08bd3679d90e57b4cc8c8665b2b8e32e8e845c0ab00a30f8d33cc18592. 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/IL4432100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0f99fc0230d212e80f1913640633c98deba0b012d9ceb242bc55fc27f67b69. 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/IL4432100023.
יעלה ויבוא – פרויקט המחווה לשירי יורם טהרלב – חלק א'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e8ba052cc7801e593137adc59a87ac9cfab41a511620a4fc68bbaf36ea738f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/IL4432100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13620b2878d844343ca5e3e40c57dc30f9f6da468019752f8cae1da572bccb6c. 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/IL4432100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5637b2fee280671017b472ef44c87da59e45f8a519fae8eeb40c97e4290d739. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL4432100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab180679ead43b14d5d45f812503d3300e306c7d04f84d28e1597ad80195a1fb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL4432100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7e8153332fc0af0de00e958bca742cde432b2791f0957e3c558087107af425. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL4432100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaaa156c4cf3caa53bd2e799c620296c92508b4f0a52784956fa5626fe96561. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL4432100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bccb2e90c1f92d5344d5f8cb121947caeb29a2536617bfd10fa9fc21d6b149. 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/IL4432100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40b5523bd388c5db1a617d0e14ee55672e73ea8da75e0f19ff9ddf2a34f4e29. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL4432100044.
שיהיה מי שיקשיב (מתוך פרויקט מעפר פורחת שושנה)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09a5ba287b5093737375374f41b97716ad67428c72609c3f4ccda0dbddc9141. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IL7522400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3017b13160da4a3eef3c87e8f618be1035075fd3d3cabbd09d9d3cb8a4d550b. 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/IL7522200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a952f88196c3e1b330089b6614dab0a5b7532af2f77735091bbc29b66437957. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IL7522200007.
שרים צביקה פיק (מתוך ערב המחווה לשירי צביקה פיק עם חלאסרטן)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1522db1e60e20f41a005c1c41108da2fe6d021400ce23fd1f15a258fc3c6586. 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/IL7522200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79783701ce45036a452037a8ec3bc2a65a7b8f23e777a5534b2bf3ee96c14c0. 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/IL7522200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacf6bf0057f43aa12b52ff5b968415b6a13e47203c131c024a8b8632ce5c14b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL7522200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53acc8a473b0cbcb3bd8c88bfa045c9abde6ceeb59dce364a00e3faeec7bc76. 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/IL7522200001.
תחת כובד התפוח (מתוך פרויקט "יעלה ויבוא")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0f99fc0230d212e80f1913640633c98deba0b012d9ceb242bc55fc27f67b69. 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/IL4432100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe419ce08bd3679d90e57b4cc8c8665b2b8e32e8e845c0ab00a30f8d33cc18592. 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/IL4432100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e4b05239cbfce702ae1fce35ea529ca4b1b7602f097231d416780f4bf57b30. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL4432100145.
מים מתוך הבאר (מתוך פרויקט "יעלה ויבוא")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaaa156c4cf3caa53bd2e799c620296c92508b4f0a52784956fa5626fe96561. 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/IL4432100036.
אין אהבה אחרונה (מתוך פרויקט "יעלה ויבוא")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13620b2878d844343ca5e3e40c57dc30f9f6da468019752f8cae1da572bccb6c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL4432100024.
בשביל אל הבריכות (מתוך פרויקט "יעלה ויבוא")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2b29d02a51cd429f55f43f1c1624b12fd4d106ba3d5a73b1c6cf599d4137ea. 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/IL4432100054.