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 0x2bad8a08eafabf2cfa6932da505baf566bbb460bcc2de40aa74e82231361d5fe. 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/7e2b0d22-0940-460e-8e94-3e8558ac8681.json and https://artists.proofprofile.net/proofs/artist/7e2b0d22-0940-460e-8e94-3e8558ac8681.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296c3653b4491bf9af36fc438a0581b700eba1023860a34e5aff35b3a5952880. 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/IL6192001383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3297c32e910e90983b3b2816d447dd0c860acd64638cce62d3ac720dd24c71. 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/IL6192001384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bf922f52685c7497b86afc7d04a39b3758cca0d35f5e86f27f7a228b71605b. 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/IL6192001386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22174b9b24c6b1649a7093ac3a23296e58e6587c2f7f27f63b4194c4d717bee6. 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/IL6192001387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a653cf9a7b08a60419ec1304b4685cccabbdfaac00e2bc7ad4fe79a5e4b2ea. 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/IL6192001388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f24eec852ebb3f1704a8f83c2d99bd914e2a56c65469ef89723991d8941a8c. 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/IL6192001389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bfa55fd3628ceeb5387120c8149e8b312f53709fd21f4e9fcb450e4439a113. 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/IL6192001390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbee46e9bb40a29e2c889441e5d73390c6c16ceb4a2d5179047af73985faf51. 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/IL6191800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2c0452da6427043b32517018cecf4c272053dab5cd02489f631f60d74c9839. 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/IL6191800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f29dca916d2a895d77cf5e1516bf3d0292c578731d253942bb93c0ab39d9532. 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/IL6191800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c3c94c008d0e9985da595e7f5d2471b9be8a1f6a4bd885944f808fd402d7f2. 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/IL6191800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf27089bfe4bb71a74306c82515bb008e298f9cf1fbd1b458bbc73705045b7d. 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/IL6191800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b376f6e9260169c6f059afe3d8d827f91fc52a842cad000245c136d46eae9d6. 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/IL6191800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680226ac4953759a122e9ec79e9f86a6a4d00f8d0b6201ab68e62519fb2d789e. 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/IL6191800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c8e7dce86a3bc750532eab402284375cf00ea0e06299fd4b62cbddf8d19b74. 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/IL6191800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe690ff2919f07b9d2af9a9f8a9a1aa2554025f0ffbce9fa9d0b53f04b0c486ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/IL1042302051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5861b9eaef2743209b4543810061204c05abad67ce310307f2f6aad5dcf6a3b5. 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/IL6192001393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c1fad52aa72fb5e243df8e839f302fa3b4a3391c0b185ef51dc8952c04104. 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/IL1042404001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9d8267d2f712634ab5cefaccdb000498f7041c8170ee4fc71c7b52a8cc0278. 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/IL1042404002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f71e72b6f77f5d99e8e7a0a54f6297996e1f099f2b270ee29ff197fa495a4c. 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/IL1042404003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f8ddc50e04b12f8759e86ec92c9ec98301563cd947c7e4f22d294d764e6786. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:49:28Z), 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/IL1042404005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b3a7b16db40cff617fcc7ed5988cffb500016684aa9ab441490446938667f0. 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/IL1042404006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530053ebe9ee98f3a5bbcb3433dc2fda729e9109752ff8b187e10a4e6a797284. 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/IL1042404007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb8fdabe9da726c166d204a1492cf71d44733a19a5c8e2469e4581a8940a236. 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/IL1042404009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09a4547626b57671eb1d288f82da719a9c7fb7f0e6cd78aeab038060f237fb3. 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/IL1042404010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebce0746ed16bf465e6da3ce3dd9b8f09930d39ad193f3dece5f0d830a89c9e. 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/IL7532213233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116f42b323ee4cd505e633686fff8f870a5bedf659380b0ecdd62163b8dc4a74. 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/IL7532213332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d24667c42e98542173ced89b38ef061179081edf9de3d77f9209bdd3ffbe8. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:51:09Z), 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/IL7532313195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2462a248c8d2b71fa4ed66e0ce751a7d7adcf3a7d0a25574d54d44648e3ec1. 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/IL7532313199.