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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d801fe854e43c116c515192e06e8687421c6ec21654e0163c3cc03cf230f84. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d977b123-6792-42e4-9752-549642d552d4.json and https://artists.proofprofile.net/proofs/artist/d977b123-6792-42e4-9752-549642d552d4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ab3488aad10af7d79847b5419887de9ca9c084a32e0567cf890e1fbefdca86. 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/IL7141800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a5c039e78026045ac9ed933c0c7d9fdea5f654b57ef966d50a9301ab54995. 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/IL7141800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f98fdfab8091de5270dc69514f871bf5dac9ca5d7b8989eea1530caba8fe21. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IL1011126878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25d5c7892e74ee8c856d77cd8b733cdda50e318cd7703a87291236e61fb4400. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/IL7141900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27a75df69f5881c30f54be3a708ba2c53afb5067d8ff1985a1b9b187deff3d5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:15Z), 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/IL7142000001.
בשביל אל הבריכות (מתוך פרויקט "יעלה ויבוא")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036d878a369fedab1889301bf8eb6de1c03278916833edf031ad06358c838c80. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL4432100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc4a5c1dd000c557fdfb62f919aea11401e1b28d4082e60f2b24d19d3027053. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:39Z), 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/IL7142100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9c95aefb8bd03cffde6a6ce0b02cc088fe93efc1139b86dff1015dbf96cd96. 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/IL7142300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9c95aefb8bd03cffde6a6ce0b02cc088fe93efc1139b86dff1015dbf96cd96. 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/IL7142300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b15b282979b7cf4f343618a423e1825b262a7cf98ba0c9d119b9d5cb0af032. 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/IL7142400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd914e25c20b3a8641134ebef9355ffa631df44dd118195ebc5434b0c898c4ad1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IL7142400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a064f4d6243db98fcdcdfaa76b01ab8fab67cc462fef7172e8d6c648a58f16. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IL7142400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc98a8f95b06b48b0b9ba4bc81656c1db505d6311d90d27afd9f5e976814a93. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IL7142400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1e977242a50f21cb41f5135dc715169859358bf9f9cdf46bd68d9f32f1c48b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:10:24Z), 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/IL7142400006.
יעלה ויבוא – פרויקט המחווה לשירי יורם טהרלב – חלק א'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036d878a369fedab1889301bf8eb6de1c03278916833edf031ad06358c838c80. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/IL4432100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f115f6cbe9a9dd66bee1e8547fb04423ae3ff3a6e50e1b07d96ef6b4aaee26e. 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/FR10S1801507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651682c532fdca630eeda6ed101d5a0fa79d1f84b7ba8c1298953734364af368. 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/IL1041904609.