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 0x5206954f6fd48b4305877487942f1f6069d5ef5e588f41412d4c88b038a55f75. 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/140a5e7f-388a-40ba-a4b2-53aa9c0fd9f0.json and https://artists.proofprofile.net/proofs/artist/140a5e7f-388a-40ba-a4b2-53aa9c0fd9f0.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 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 0x2645916a1a47eb330431a8f28e587cd0c3cfd73c1e4720863f8da6bfe218a7f9. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/IL1042202261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4b03052669a72ed64af04bb83f17395b0f6fa24cd2d6b1493c371655f2a533. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IL1042205507.
Good Luck, Babe! (בגלגלייב עם דלית רצ'שטר)
Good Luck, Babe! - בגלגלייב עם דלית רצ'שטר
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fde75d8e7185d6c85f0191a18431e12e14ff15128b0d027b3f53e754eadc91. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/IL7532413710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8a2081ab7a358826d4b1b9182c7f975623c130efc15451a6ea49592cf98744. 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/IL1012401154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1b431339b75a6c5a0dc565b4b2f795b83021831669e3320b93b193b4ef70fd. 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/IL1012401856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7274052d19e31941a4f1349f43e10c642ec96afeaadf2026ec6c6e8e82c1fcd3. 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/IL1012401994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfe09b07cbb5f74a8ab05c90ea1541bba4dfb4e7efbe97c46c57d2ad4935a6f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/IL1012501529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e05b9f707042ca8472aa88a8d0b72c86098c11abbf67e71d7e33b554d554a18. 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/IL1012301940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72adb3c4123c63fff9a603ff209eb0a01b0dc887e61c93ec14bfac13205c025d. 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/IL1012401672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cba5977f5d59f1ddb13665b5c27395981c6b1f25486864d92f292298da35c5. 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/IL1012401676.
יעלה ויבוא - פרויקט המחווה לשירי יורם טהרלב - חלק ב
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 0x9ac003fc5e4229c67c2ec54f61e1ec28b350fa22733d926426f4fdfcfc6436d3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRX282152035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc0df0b86bceb28a6cb0289cd0085eaa7fa98caddc9f10c5c27b14b841fc21b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FRX282152039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6cdbdb6ed233a63259407230cf0c1ca89ac10898ed889be6d925c6648db51d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX282152043.
אם היה לנו זמן (מתוך ההצגה "בלוז לחופש הגדול")