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 0x0da9cca59497864b70cd5c61fefa775e8c86667c265f2aca27ff299c7ba721b7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5757377-71c8-43c7-9148-30d5b667ddd6.json and https://artists.proofprofile.net/proofs/artist/c5757377-71c8-43c7-9148-30d5b667ddd6.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 0x781879b1f698a76825faf0feb2ee70986112bc3a232af697616fa80f1bb99a10. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/PLC062396989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb270440cdede56761d31ea02c8b686e39f2a607314295e0f95491f9c380b0c6. 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/PLA552400749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf15b39a3784c8d61bdd3fe317da61c24fa3b58b08a95d00a0405e31679e8cb. 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/PLA552401140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77de856379f3152e6bd12527294b6e8b66fb7faa1bbb5be9f8d081f9bd59b06. 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/PLA552401099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796b4439c122f35fcf00e9fce5f1206837cc897d7f59fee58af164c8c8c257dc. 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/PLA552401141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8021abe0cefb27c5c9c2f95ce2288e2e225eb26a1eff2a22899006a715d3e7ea. 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/PLA552401142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bad8844230713fab399ba941aa530212de68567e83252e30334e992c699aefc. 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/PLA552401143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56260e5ed4474e5475823f0375ea56ff1d5c87849b9652f769ff9a8d64d39022. 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/PLA552401144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd891d6631d5f64986c6b87859c27494b74c40e20ccfaed3252425c62cd1742. 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/PLA552401145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8dd0f4b003d30edf7034d0e23683849a41f98431cd04cb632ef612e21d8cae. 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/PLC062406323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34736a7db3505766d76118745f9f6ed0a33b6cb822de38ad45e29314fc25a3e2. 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/PLA552401146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b7d32e8875488a3a2a8a4101517d0f7573539cc119f5feafaa0793bc9ab55c. 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/PLA552401147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb270440cdede56761d31ea02c8b686e39f2a607314295e0f95491f9c380b0c6. 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/PLA552400749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abd1476eeadddc17452a19d5e4e34624d8f631b59e4069cbb6e35c20182106d. 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/PLA552401148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb222c087946813e1b566a8e185e9adcc1422016dab9a9fba8e71f2e69051857c. 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/PLA552400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe142afa817130874cb2faaaabbf8264768893cee28474b1e1511988a695d7c06. 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/PLC062394754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf15b39a3784c8d61bdd3fe317da61c24fa3b58b08a95d00a0405e31679e8cb. 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/PLA552401140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8021abe0cefb27c5c9c2f95ce2288e2e225eb26a1eff2a22899006a715d3e7ea. 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/PLA552401142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77de856379f3152e6bd12527294b6e8b66fb7faa1bbb5be9f8d081f9bd59b06. 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/PLA552401099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb222c087946813e1b566a8e185e9adcc1422016dab9a9fba8e71f2e69051857c. 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/PLA552400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8dd0f4b003d30edf7034d0e23683849a41f98431cd04cb632ef612e21d8cae. 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/PLC062406323.