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 0x4bda2e0a946b52f7d67046498eb756065b0af9bcca6c9bd268deef0ff88cdb85. 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/eed7a6f3-a1ba-4ef1-b077-2a6e0c671deb.json and https://artists.proofprofile.net/proofs/artist/eed7a6f3-a1ba-4ef1-b077-2a6e0c671deb.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 0x32f8dbceaf5b4df7f99010e06dfa0584a8476adf1999f05e15eff703f9aebbf2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DEG251802369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e2e79c36f1b99b6e579d672a0f8354089aa6480d629c910a02ac0c907cb047. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:20:09Z), 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/DEG251802370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e79afb8ceb36bed7ba7ae6240b0bb088c626b22c7a120ae98d2421b1870d2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:20:57Z), 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/DEG251802368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf017465b39fc81f09c8a9a80d94a9a96a29b248b9bd710925b5e6efc1d9dbcb. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/DEG251802361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e1a5de4f0beb60f379aa5cdfcef456905c86e34168172bc4d6525d6f4a3c6d. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/DEG251802364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d772e4806c35115a78a4cc4d46fae1d5d1f75fa45dc92d4b7569963ea133e6. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DEG251802354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc2a770089f3ad51c6a41d41a09eb93c72736b31658aefc7eaf4403de581bf1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEG251802365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f59e4463c1a0038103b9cd1913e93f1fd4c06a61daef21e7d43067bf6b889d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEG251802367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e91aeeca311dbec1da24219cb8dce0ff52f3d0b5a7bac225312f4e6970771d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEG251802362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3922b96c4b36d8845dff38b4f95ee06d949a3d039cd549acf86819c4249d5e7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEG251802358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a496d437a45cc23d9be350552c203c06d51e6d55eebb60c700038e32407aaa7. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/DEG251802359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dfed389cfe848a6e09f72f282be198b33949798d84421e797a84ed1b3eac25. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEG251802360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb83cd44ef9081cd4bfb2a97f41690fddd25157fd013825969ca6d15996a928f. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/DEG251802357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7f4ab7ab1d3daa5bf524a35d74b665c8f8d0504f39b3976d152ae92671fdd1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DEG251802371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e90276f99910ce6d69054bb26cdd735e15ce78960de96fe5677fae370a53291. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEG251802363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858c425a2000f3f0fd3cb3383795e908801e319d86bc50129a624bbf87954fed. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEG251802373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e64901de267c058b481be41d85847e526eaab2736a145d479c684c561ce8cc. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEG251802356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe707e771c1171d4796c8a23cf099440dba279d619bc2f59cec0282218187432d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEG251802374.