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 0x457029e8075b182d2e1f27dfa38550fadc0d0fe55f50dc6b99df983392c1eeda. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d37c1fe3-643d-4327-bdad-baa1cdf20265.json and https://artists.proofprofile.net/proofs/artist/d37c1fe3-643d-4327-bdad-baa1cdf20265.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 0x9fb2c8f96258014a8e05fca90cdb42c955dc357ce9758c84d53958a1d2543c9e. 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/JPS801950058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd54f4ec1ddf71f25296fb9c8ae7d06a849715955505b4b9cf0e9c74eea1da00. 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/JPS801950059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de706afa7b866573b41840fdc59717cc66c7078a1f8d137d5751c5f9e01cd88. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPS801950060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a10ec66c089f2eedfc25aee7db140146a65e876a6f230f731ecf1a9241bdfb. 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/JPS801950063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bf7fca57fa541e77fb2cf0c0684b0458f7b967d36aac1adb88768ceadeb451. 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/JPS801950065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45198768460f3ef04786fe644b8e7804221c48034a2c1a6c9c7b872eac2c2a7b. 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/JPPO02304530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b80d5eced7bdd1c410c453c70d151162cd4416fb1360697f6ba833fa130a5c. 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/JPPO02304531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffd7f9c8d0da1aedcdfe2f8dac099420aa334962d7148fc5a771ccaef1844fb. 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/JPPO02304532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b47ddc2e81427b00f793a228662808b92a06be1395c004e73fdbfcbed5b187. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:09:44Z), 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/JPPO02304529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b85cc3f959d0e71b54bf91c88962ec2f978fbb0c0850a99869b08a3ad19d15. 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/JPPO02303587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70f6716b71408148e4c46c58814946c6790c1684364523ccdf0a7e519502db9. 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/JPPO02302828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042c378bb01cafe8a27a3955f87be0cf70d1f858c87a9caf767c8be7897d69f2. 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/JPPO02203840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849cc6e40e73630980dca265a7782828184d89391eb2303de9bae45eb9735b70. 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/JPPO02205104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042c378bb01cafe8a27a3955f87be0cf70d1f858c87a9caf767c8be7897d69f2. 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/JPPO02203840.