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 0x1824620d353a13fd99c596c18f58e925f4693901716aafcbe7037889005cdd14. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/298b4611-b358-4c6c-9d5e-28ee9a0cd409.json and https://artists.proofprofile.net/proofs/artist/298b4611-b358-4c6c-9d5e-28ee9a0cd409.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 0x2051b421b8bfc3bb30ba4e0cdd3187fa103c3c2619deb5c8bb52763f7c3bde9d. 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/SE54Q2301902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bedb6f90e99bd97438d185b3961f37ce5e86029bbe66d0ce937216255c62605. 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/SE54Q2201901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d46ee5e87347ffa36dd5ac12f06632efb5200bf8cb5666ea71562f6070ffe3. 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/SE54Q2201101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e97cd8a8a087df6989813131c5b5c9f57610c4dbb42003a3eaf87578810981. 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/SE54Q2301907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fc817cc093911c9cab3b2b3561f4dcc5f86d3a4164b058b4c18ccb41f0089e. 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/SE54Q2300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef6132d2fb422e8ab51dd9a41adbcc782707767384c5781d567716d3ae2416b. 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/SE54Q2200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72514580e73deb1980da8073929b8274bd580e164387e3eb1bda7cacde177d85. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:27Z), 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/SE54Q2301904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d506fdd7810132e0c68ddce48614f2b023d406dc01247bba10428775bdba5b. 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/SE54Q2101301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe60ae709f88ab256f3bd32c6e70f652692bf8a52bec6736cca1e9046bf4c8c1. 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/SE54Q2100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a2024c121ed2e435d5132b4745f47be1adf307deb1bce0a5cafe269fb105d0. 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/SE54Q2001805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5088f18b7ab57f2c789adc06b8f17e429ca351566f8f60918e499fa39982c95e. 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/SE54Q2100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671920eb0fdb9285a577619d8775c387ca8faa59af9d02d1c6626a482d975e2b. 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/SE54Q2400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca7448b5fe49303f71585acc79b260891caf52f86676d451323f53f601c8d02. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:22:56Z), 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/SE54Q2400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabd669b6ea82ccebeede5c55b060eefbbe188e30d3216995d8664dd3e378583. 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/SE54Q2401601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671920eb0fdb9285a577619d8775c387ca8faa59af9d02d1c6626a482d975e2b. 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/SE54Q2400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebd2baf46b3f1cee2b349c27b27a9d76cf7ef818820a67ffe47054e09ce13d2. 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/SE54Q2400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc489807b0db7153c8fd4db2ecea0ec1bccacd74ebc4d009e6f84291aff86a3a. 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/SE54Q2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46164ecb1f1448ad7283d700919d547d1e6d99285a92a390a29575a6626b8552. 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/SE54Q2303401.