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 0xae61d405a5fd4de76ac4a85e94971b73025b572380dad15f46cb352f8412f7e4. 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/5321d8aa-c7c2-403b-aeec-aac9fc18ba99.json and https://artists.proofprofile.net/proofs/artist/5321d8aa-c7c2-403b-aeec-aac9fc18ba99.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 0xd5eae3940c64237d646f129c8018e4b2e9afc40bb0740661efa4a2efc59d7ff0. 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/DGA082293004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf98bac7d785fa511591cc6e545470a85a064c4bc77079e0ad19f09e7bfaad6e. 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/DGA082293006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067c576deb124de3b72150430d20952c3f861663b45a1186e6827f0970feb74c. 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/DGA082293007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3bf7eea998ba9c2bf66c3e7cf4cc1a44971b791f7ab444207708b8eaef1c94. 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/QM6N22475395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3909e49bcc9e073ed105179152be3726cf7ad576f7180d540444602ce22e53a. 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/GB6LY1601399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46560a976f5c55fa132be9b2842f3edff06888c7fa5b8afe403fb52dc086ee7. 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/GBUM72402665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9384133c7b0762900c6d3e361679dc493ca257a296563e867f62e4c0362be7. 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/US38Y2403919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdbec0ae760ff1cc7796e6e952d35598cc3071b5312d66fe74bf4b471e2148a. 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/DGA0H2325682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e770699495739f693084fe67a808e80e29b0fbc5bd3416529ee64743ae0707. 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/DGA0H2325683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39427f3da9213bd6b8ec3dc21d683b653145a74f4db2fb55de5baf3444810703. 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/DGA0H2325685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e7b53ca228e6c8c6931b1ed8640e427196e331ba89e588076d1424df37bd91. 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/QZJ842003867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15f8116696f030f79ec17c8fa925d6c1120f63698f35774e85c04ac094a766f. 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/QZS632307448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d8457b61891c57c38081d8f88981c243e9eef90c6f1fa7cbefe1464ba42505. 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/USZXT2351011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fb6f41f1dbc98887b5cf0c3356dc621f79a6bf3a40b4e87563460b615dfa49. 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/USZXT2351014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36de827f985bf7eeb4b29e0e4afd1038e2c64647faed8aaca4ba0dd2a11a4185. 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/US5ED2000430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05da69df693ffd78d0bda57d368b69a4087a34f5434f49b4322d17564877089f. 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/FR10S2081059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91348ad4056d3cd15fbaf4c6491102ad764fbe4fd96417ab77d09dd0aff970cc. 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/GBMA21865745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb650d2970d92dacd212ab6e33f7a03dbf994a3cf67c21fcab500c5422838b14. 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/QM4TX1850894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bccf86ae9466cdf62b58462eafc39913974d1e892ff57bca3ee9dcc30d7e1f5. 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/US38Y2417376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78960a809374b596eee20d9310d22aefd20e76ac88dcf92192f89c94a9c6ede3. 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/GBSYA2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f0216009458a2fda0092c77b25f0344ddd5b55cf194624f5788beb4684816b. 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/GBMA22097394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab3d743d2b225dc99a29b3b5e885725c6678e183d75605f2be91d57cd82c176. 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/GBSYA2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c3a589e0448ceefd6c7952b5def03e4178c6d83eb72f9fdcb2e98d841e1d81. 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/GBSYA2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580d83ee56e3dc99ccab1a2e2066a4c3c67a277646dc7c30f5f6e4bc230b6b6a. 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/GBSYA2000016.