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 0xe452644467c5bf055511c7a0cadb07264b6a59245fabc74a3ec1c305e3bcba5b. 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/8945e088-f815-4249-81df-39b092e1421e.json and https://artists.proofprofile.net/proofs/artist/8945e088-f815-4249-81df-39b092e1421e.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 0x12f8fce9cf787df886f38a5230201ed29cbd3e4ba7562e82aafc9ac56a9352c3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IL5849507864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf746022615fec2f6a30ba68346d2f5c13eca7357d226c4fe00da4602d056d3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:50:31Z), 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/IL5849507868.
Gia Afti Mi Mou Lete - Siko Horepse Koukli Mou, Tha Mou Kleiseis to Spiti, Ti Sniazi, Fenomeno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1240f8c50106aee3476a0c66f7fbc2fd0b628a46a0c1b7f297d8f5cd371259c. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/FR96X1792749.
Machrozet Shketim - Girna, Ta Mavra Matia Sou, Me to Nichto Na Ziso, Iparho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6408694afc835177a573dd9a23db40adb9b6d15ccf5fb5734557d2d520ade65. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR96X1792750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e9ad41ec5083593b22d46f0dd7cc94cf180296a63008d9da1f7260ef212ef4. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:21:22Z), 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/FR96X1792751.
Machrozet Tsifteteli - Ochi Ochi, Tragodistis, Arapines, Kapse Kapse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6662ab33303f1c2f65642724d20b1145749acbcecf030bbee3633ec86220c001. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR96X1792753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8e302b58718683431e1f5bff001ba33698f24cd6e5a3ab325ca5c5eb7f11ae. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRX201942962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23610e6859cc6cbcc7ab45ff59349ad2fd6ef7bd0024fadb08d380a1767022a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA062015332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768a9c462e1fd5a09c2c03134290aa0d724294625151b821db157deb5d6e934f. 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/DGA062015333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c89567d8d4cf35751fcf92123af8ec750af709b793772e143e1fd8ed5c9967. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR10S1894541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0257866465e573e9d1fdc75c0eba95584796ac7d63c093113b762260c409c48e. 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/FR10S1894544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecadc2aba709f5490362ac17096ba76a6a294e015631e6233c97bac8eba8721f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IL7192500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c167136b946beb04c5ee8f1413db0afbe6497a830b5d307e509ece32f48f7a. 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/IL7532313100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a7c3e21a34afd527fb4dee72d1b560c63ef1fa1199a0033ef993445a625f65. 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/IL7532313588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d843e54b9610f6de7ef2d575afafe6c06191f9b824c37ac74ef6b41ea7488b. 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/USQY51359092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9ad45a8ccf800d6c3062c4938fa89b6f47225214115f8e391de1c14dcd65ed. 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/IL4431500666.
עבודה עברית - מחווה ל-60 שנות יצירה מקורית
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3b974e21ecac1bba046ba71c82809dde557e945baf581e9fb074aeb7ee416f. 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/IL3600801680.
Sabres the Israeli Dance Project, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e925a538a3ed807f3b5dc6c9dc213fea041c69ff5b2f0d8d51b9016e784a7cf. 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/IL1380601207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d62e4a29495cc1f8c8c4198e1e2c1f430ab6f50f46e476c79680ad937215ff. 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/IL2991599009.