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 0xc7832852d6c6cc6467c0941b6f765c066e29972122c395a89dbe8ba85a57dfb4. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddd1a244-907c-476e-9c37-d1ceb9bb800b.json and https://artists.proofprofile.net/proofs/artist/ddd1a244-907c-476e-9c37-d1ceb9bb800b.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 0xdd5059f716eaef1d4a3a671164afb4cd786d93b618d731bf3dc3f3dbf5ccda7d. 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/PLD111900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0398db297b1133afe6a73865b97d0992b45ee03836faf5010447b8bb2d7195c4. 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/PLD111900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb1230981cf47a796e63bba16240b6477752cb2590077dc00ac5c92e959d999. 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/PLD111900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9627565d7e8cecd9cd622e9f6dc5e026d0548bc069ec56d6b7496c4050b91972. 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/PLD111900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286db9b9e5d39381da48b6e163873df7addb4ee424f39d94b2415a187834fae3. 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/PLD111900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57174755603cd95ca480603ba6d43bd4786834a9462db305714630c63cbdff9f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLD111900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908431f9ecd50b5310bdfecf031ed7c9d8df89fc18cad77594013359ad1e5590. 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/PLD111900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e76025c167e0b9aaf40a5dc6f29a31d592817c46b95fa66e1b113bcc7fe4f2d. 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/PLD111900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262654e4f678be884184370fbdedcb48cfd2276963e87248896a960d8f12cb09. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:23:34Z), 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/PLD111900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4d3ebd4df215077370e9180623655873da4bd3aa1aa088a89eed81579c8f9a. 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/PLD111900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5faac67e4dadbeaf45fa17225e64d345606fb6be3f6a1209ac4327329e2edce. 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/PLD111900041.