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 0xc24d4909cc19d3b76b9cbacc9f4dcd94fb124abcbb04af643cc731d4e9e9951b. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54a7d962-4724-4631-a90d-6555bd2ce3e4.json and https://artists.proofprofile.net/proofs/artist/54a7d962-4724-4631-a90d-6555bd2ce3e4.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 0x04dc90d53c80298615845f21796e919b09daa63474a174661aec987d03ff12b2. 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/FR47Q9900490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3504945892b61bd5f5629b157de3d2cd8d9448e89967812fb327ad8d97f5cab7. 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/FR47Q9900500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16429927300957aefcfc7c479705206dd17fe9442a0b3ab5441e6099c1b3c0e. 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/FR47Q9900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fedf13de30597e1e1bf5cccd863af49dcfeef93764f80b3ca259862cddaffc8. 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/FR47Q9900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14633edae2fa23ff9c5170ce565ede6697aca074844a71595a24000dc2114c66. 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/FR47Q9900530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ea29308f73d8e8639138e8c6ec186d4a4024f485f4e79063cf88ba863774b0. 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/FR47Q9900540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aa8e1d6e7822ffe187db5ac78e95d13ce7d78ec11fe9b9b902f9e92e7d9e8d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR47Q9900550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d95a610faf2736ee13c322a7770efa5cbdb6d0da674b4a421aa3aadcf827cd7. 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/FR47Q9900560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285dc8dcb26a398342e6038081e24e216645036c56299ea269a4a9f37f2e2fec. 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/FR47Q9900570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e63a810163c9a8c1a051f35a7c27e5d599b0473451ff40a7ef2f93f093d2a73. 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/FR47Q9900580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49960d03bd66cb03e917368b670c7fb6b9090fe917e14242872885f1ce2bcdd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR47Q9900590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd720e0725d7816261a4f7af3a2be39e11bee758427f468b4e40a488c9daf7f19. 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/FR47Q9900600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6ca6a0f763a71acf97c3b41bce3dea9970f044a620d5b1e1e82492a392191f. 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/FR47Q9900610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc1a8c4610e0db44e862c16bc8524c41cbf1db89635b0f52dfcb3478b70d777. 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/FR47Q9900620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36b68002014e7bd8b0672f69b81fb69b5a8410c7196c0d907ce2eedd8869cf2. 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/FR47Q9900630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe062c8cceccc427a5e498c01459020208b6a85371f5e5e851d679da32f3a70e0. 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/FR47Q9900650.
Alfabeto: Foscarini, Pellegrini, Granata, Corbetta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a43d64122d51a5545d698178de5007e54538823a044e13fde9c319e37117fae. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/FRZ130101170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e8ae9b6bb9bd94b592ad442b699759831a4d7859dbe1c8059baedc24362b7d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRZ130101180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13ed1852c9d3341d36c925b2ed9672baa5447e4b081bc3bb1c8884d1f618e3a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRZ130101190.
Passacalles per l'alfabeto falso e per tutte le lettere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7628732a8ad666747e3f503cb44212044324a7b9d24cb80f0f34642e4fccf9a6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRZ130101200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bd7f81e2a0659bfc84596224379d777ebdee76d18899579193a09137941f25. 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/FRZ130101210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d3eef8903c72576b95ad1c288ea90689f0bd9afd4d0657e9fa02e3b5abae74. 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/FRZ130101220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12750c80f75993937f072edd0c3d2b0cfb1896d7f92fcc72602bfa09c892c774. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRZ130101240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740aa0e7828566c24f485c1b3f3da7248d0d615627633eb5b0a45bd94a6f6065. 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/FRZ130101260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fc51e4252ee68d8acf76842e798fc523eb05f660053e6c779199b19f3d72c4. 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/FRZ130101280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75939a9b4f5f9e4dcf38bf944368f9745f53842883262054a23565e07c3425a. 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/FRZ130101290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5803563f601d35a5aa0a70722ce349ae72a56fa7f64815c2cf6153b6c3914a. 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/FRZ130101320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2578fb0d9e15657a4d665d6253a10968c226fa7c01ff0af1ad3c58b088804d85. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ130101230.
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 0x2a4b9502ca84930f7d64703e504b4d67344be865ba73bb8af1427bc3531b9a76. 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/FRZ130101250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa175ee8321a5ad8138aab1f48788912c548d82d2fef1c351a33c2ff28f8d6891. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ130101270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a7d0e9e6a0e1604c0b70f4d3a745620c40ec265abecc0bc5e374411c71d0f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ130101300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fde714cfd9a3e4c33bda5571d0f97588999670ec44a8483387bdf423af0feb. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FRZ130101310.
Alfabeto: Foscarini - Pellegrini - Granata - Corbetta
Concerto for 2 Mandolins in G Major, Rv 532: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ed1f570695170f763c21fd30e5e57a97edac909d96488ceb01dceee3067b45. 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/FRX290600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf97c9ef6de338cbaeeb6ec883c6b4b5b949980176587fd2b93c88313f1038. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ATP571231090.