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 0x5e456b651ee6659050ec74073442a67bd33cc036718ec00d23f1eaf8d2352d87. 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/2f31669a-489a-445f-964b-691ce4f58338.json and https://artists.proofprofile.net/proofs/artist/2f31669a-489a-445f-964b-691ce4f58338.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Supplications (Poems of the Oriental Jews) - Parashat Bereshit - Part 1
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 0x1c22781a2a5f4bb397e12ac6de573ecde3e18ae35236419c56bae6d8b786f3ee. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IL1042101271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b6481965d2293ddf3c894a491d0de5e62731409f3b3dd538b05c64d29a7f73. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL4191001122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bab2469580e21bc49341edcc97413cf10c9b3fd9e51e15ff77221a01b141ac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL4191001123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6d612768bf911708f399fa64f159928c41b9275f96310a5bf8b94e60a333a7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL4191001124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc9e3a0f2558b16d3fd8ee2a31985ee549d489fe2fe90875e7a449e815af6f6. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/IL4191000973.
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 0x4614364ce49f33db147fd8c2074fbb8406cdac7a0da9fbc882d2918c6d6fc56b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/IL4191001125.
The Supplications - Sacred Liturgical Poems Of The Oriental Jews - Parashat Bereshit - CD1 - Part 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda322589ac591adcc2edb0b55883948204a4599140eb2457d0451a2a0e420693. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IL1011121459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2cc9a002ee45a1be9ebfe525e38147ef90ac66666175fbc3a637491ec63877. 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/IL1011121486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63ae6fb99d298caef0c25c1d298a15ea67e826d1cdafee7fa034cd7601e8168. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IL1011121607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e04ba557e564a05f7cb7d5219c1ca57f459e6500f87539558daf7c94999a56. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/IL1011121610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f3b34dec4c43d96985ef0682537b43f78dba9f719c1f0c0573866f9fd2701a. 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/FRX201645131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fda2e9eca15fa7cbeefcf54daf2fde7f10e52000e767fe8d9abd8828173fd6. 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/QMDA71379923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94870d13020bf8e83f3a815a9de7636daaeaf5814319dd3d0b9f42e06cd4ab03. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QMDA71379932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7babca6769ceb2061faa7e9183fb306f337198ce97cad5960e13c82665a885. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA71379922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8afe81ea4d6f6013e77203bbdedfedbcc407d2bb1ac75f56ed5da44888f2be6. 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/QMDA71379945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323055ac6cfeea3dc44c5519236ffc803546911cb5d51b3cc2ba54ef168dcf3c. 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/IL5842028375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7398c2f161bf027f2ff5d80e4f512590be7d7da96237b1cb515ea0d3d2cfd9c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA561395075.
Dui dui demonori (Chant Tsigane Roumanie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea4cd9b8d81dbe000860a4da6e37a39cd8bfcdc8eeda6cce9b98a3b5519c870. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QMDA71379915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8829f35a5e3371c7ee03216fb7e9e6e4335326d954e547e72805e663dd9ed4b. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QMDA71379947.
Cantique des Cantiques (3,1-4): Qamti be-Ishon Layla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ff79d19261cf49fc173b5949c0b55bf4f11229484eea4e3edefac58183a92b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/CH4211700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a78cd17be0b9d28dc3a90568538576486fcf9b8fc8c8d1be32dffce791c4f22. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/IL1042307292.