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 0xf6c441292898d27a93a4f4e42e21b37731fc1c6726da5d836c296d84a3b2e73d. 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/7ea54754-9fe4-4b08-a509-42c7c00548b3.json and https://artists.proofprofile.net/proofs/artist/7ea54754-9fe4-4b08-a509-42c7c00548b3.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 0xc10dcb0d4a69f688cc3d770679395c5d18623e13c468ec33159430eabe7a8dd4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUAH62417897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2495ac1c7e32645710fc23c72900acb67a96184ce2082116897b0f9cde2ce8d9. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/RUAGT2514459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059e62e14955f8ef62a7244e58366154494ceff208edf2d8be35ded53c6bbafe. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUAGT2508760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0fe6d59f2e2a72ad6997511e8528fb57618a676a190348335df4e16e6d789d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AEA3P2500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb920af30a1a8b6a90d11bbbfa57180d95f522ceb4ca3934f639f440eff7caa27. 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/RUAGV2405067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ff5e66b2c1346a318c166803dc0be76dae3c490fb2f1a65e5c636f3b82f63d. 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/RUAGV2403984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e0f38f6d20a3f52745bbdd5cc58a3a595b06c0147a393ec54f220f8036c42f. 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/RUAGV2401622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b1684340b0ec40b324009e805701965a195c23e11786e82835bf524f711110. 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/RUAGV2400559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1592bc3a8b72f945f722b8197f6e6213cea38e33afb508d8175c369f8f2af2. 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/RUAGV2303628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3661ee15cd60a0e0bdf55f41bb1500a8f773c78dd5bf5226f353ffb7169de7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUAGV2302373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d194950758b8cbb8e447bea967a82d7b45687f6e0ffae4cc60869aac97eef. 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/RUA322203146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895ff52c1cdda7393545cc7ec7fa93bc8567ffc08be695e570c16da5e8cf3fcb. 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/RUA322201197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcede68bf2c8a661eadd5f9e2a5f71233014c0c68d639d90cfd1a544e19ee3d42. 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/RUAGV2406184.
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 0xe04d3226e352523c72c2bce8a880a69658caea686e2fd61fcc19e8ee114867fd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/RUAGV2402346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0551932e6c3135cadbe366eec2267a774dd71a714b35ca646d807bdcb5f87941. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/RUAGV2401225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ca72ce3d8ddf6a89ab01ed9a18723c46c1894a945a2fc8d0760bc4062715a0. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/RUAGV2400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0bb1e8651797288e89f80bc691876e4308a0fd6104474f8ec179fffed0a12c. 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/RUAGV2303149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcdfd1e73f4e98d4482699990a2bec5c5c91cde75948fd728922e1f3c5cc492. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/RUA322204430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d32b4a6d19ceeed78283cbf220c6c65c6563cbec9a0bc8254f9f9840bb97d44. 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/RUA322202120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc572f472f83756c79cc8a1a66d844afc8bb393727785a43ba6564eb29f9b3a99. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/RUA322200746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36063b23cc062c72ebb0d19540716251b1767032a54beaab5596c0d5343d5ad. 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/RUA582200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca687357f440b5c55f4d46ca7e96e0a8a4ef639e6e841f0cb3026919eee4b79f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/RUA582107457.