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 0x2c10c86ffa0c48633a890d3754d3e12eb0cce7fc16650bb62992bded28b12b15. 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/8a194844-98f0-4df8-8341-033e17877765.json and https://artists.proofprofile.net/proofs/artist/8a194844-98f0-4df8-8341-033e17877765.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 0x1c6722e9b7ff880a3cc510e87c1ae7d7fecf9edebe45e968e1209a0a3a8b6a30. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA0Q2367645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73288defae6c8846387719fea71c82d8af94a4cf87524468b5260040ab8d52c. 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/DGA052303254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1515bac4e9fa4315f6c4f792457c7bb98b103969a4294b74ae4b81fea16f849. 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/FRX872369567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3afbbc7e38eccc59b85065238328e33d17b5e1af8723e01c8252a1f60af9474. 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/DGA082313632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef73d8871e1419f59b95837a438c33b7c4a030ae8b77363c399c01df3cc4edf2. 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/DGA082304436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23aff4e9e784fe77ea98c541a50b5a6138a8663419707ffc833f0e2d4dbd3aea. 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/FRX872360717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c47dc1c0d9e10aa779e7e3b4592172e2af50c89d4bd357753c885b8aaba24c9. 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/FRX872478104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6b4a3fbaaf6942ddd667ae92d4dc0c37b62450205dfab85582dedaf59404da. 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/DGA062457571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66819348a27901fcd8ce87d585ac5694fccf4657bfd05713780d877aba173fb. 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/DGA0M2478020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23aff4e9e784fe77ea98c541a50b5a6138a8663419707ffc833f0e2d4dbd3aea. 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/FRX872360717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d73e7d60a0327b40b6860eda87bfbf9698e6e2d0f595a942b49491a664b1886. 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/FRX872352829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854cfbb2cf1229a6d83e359713e19421427ba4f29903e7d53398feb2bea5a6b4. 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/FRX872331466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aaf1d1678cd875594f0f0ac9d3a11f274db332d8426294695222ab29fc910f. 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/DGA0Q2377628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193364d15edd8a50aafb5d31e272644e84e44f0e81f9df8de73c57b9441d2f83. 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/FRX872394846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a198add6d52eb79992b61d19461ea5fc7631e950396020758ad9e92330927d. 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/QZFZ32233477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd1280de00ca2650777f7ff23b6de061a424e64bbbce891861cc4e4052363b7. 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/QZTAS2160285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54f8282b2ecea80e72d744a0d8b35d770537d1409cfd9d43ce2085dc66835f7. 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/DGA0M2330811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b5018a5de4a47711efdb69ce716857d26e1b41148d9375864a0c9d3803a7ca. 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/FR96X2388793.