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 0x824e1bc70329a97085dbe2277d5eac16826a920d4bb7cca54927d9ff82029c1d. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df5d6d29-8275-4e35-9041-2626129220c1.json and https://artists.proofprofile.net/proofs/artist/df5d6d29-8275-4e35-9041-2626129220c1.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 0xb07348672510737b85acffc210cbb9a142d7ed4c6d017cd0203ea846f4fcf3fa. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPG102400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779c4aa5c645daaf28b22ed444d02b608d51b7a113749deb2f57670481fcb546. 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/JPG102401528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3a257f1322465e6e4739843f2bdcc35f30410deb3faee48b4b42e60a89d185. 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/JPG102301797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94809968f08ca88df4c4bb8933f7a8770b88a5edbf05493df378a762e438edf. 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/JPG102401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bbf20741a753c65e8a463a505b3593c0a68f30f077ad0ddd4e8af54c7d2b74. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPG102301468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa3f0c016a9388d35c6fedb2350ed9a2304dcb68bca62dac094c15f26a6d4e9. 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/JPFL02300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4616671ed490f50e1a30cd7bf96f3c0cacaddb6a0ea978d9024dc6f5176d0543. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TCJPO2160406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc041342b0fbda481a7af39caad8639ca6debb44d66c80d0402c1514acbe7237. 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/JPFL02300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983d90cbaec9d77ea264a7dfa78c697273f2fad1d72afbf87652223ae9cd8a98. 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/TCJPP2129929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481477b5ab6100aa6124b0b5d1958cc6c3c6653b94e628d5fa6715e8bdf2adb4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPQ2141963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779c4aa5c645daaf28b22ed444d02b608d51b7a113749deb2f57670481fcb546. 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/JPG102401528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94809968f08ca88df4c4bb8933f7a8770b88a5edbf05493df378a762e438edf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPG102401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07348672510737b85acffc210cbb9a142d7ed4c6d017cd0203ea846f4fcf3fa. 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/JPG102400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3a257f1322465e6e4739843f2bdcc35f30410deb3faee48b4b42e60a89d185. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPG102301797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bbf20741a753c65e8a463a505b3593c0a68f30f077ad0ddd4e8af54c7d2b74. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/JPG102301468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc041342b0fbda481a7af39caad8639ca6debb44d66c80d0402c1514acbe7237. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPFL02300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d5ae2bcbfe9db81288084ec62323a762e7fafe0e33dd0c24b482890aa010bd. 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/JPG102500765.