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 0x4338f4f1990dc2c3e31816c256d4bc9b61be2b3ae6552c5f2627977d52573cb6. 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/31b5bf34-e03f-43bd-aaa3-093f06f08317.json and https://artists.proofprofile.net/proofs/artist/31b5bf34-e03f-43bd-aaa3-093f06f08317.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 0x081556715bc2aa3e1ba01c9e3b3937f140a2a1c932c06279e3d0bb94bbee5983. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:45:14Z), 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/KRZ291902764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8eebfe3f7f635e13e4b6212e3fc4605fe4e4473a3d18f05b8a2f34a609329a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:41:02Z), 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/KRZ291902767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc530de1a8f9cc9d05b001156de46b71a12981417ab48872fa8b7fad06f4358e1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291902768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6298f2735ae1770f038f665bcd33e65dbb4c201d3affdefd48464dcee392dc6d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291902769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1fdc8e66f77dc81cbc317b6e1dc9606a9f8746e82b334df2186564e797d16c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291906241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cfeea1ec40e1b1febf4285c61c716555b05e74d6fe4e3e952801a0dfdb5a3e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291906242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4994551b4a9848ca0ff6f97ebf4536a48a2978102557c2dbc209e5e94f159d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291923394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d6d0a4523a21983e8747cc4501d0ef398d1cd3f81717ee2a990638db7c9026. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291932824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851df6d2fe70f409a9e68a5b3771fe180dc552ce630c637c501b137abfea794e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291934114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad36bbd47b2f534e39ae865da1b3f09ce14f5af519313e3c652ac325d90dc676. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291934115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e1633671336aec854f808362b0cd8a58f0a6f69b283d7bee886b3080e1add5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291934116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693de1fb5ac28d43498ed1d963d33a30565ee250d16ec9328b3b594fb894e894. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291934117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360a20385eaef405887b44e87f0d4255eca12470716a458d48d6bc0524a31a51. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291937131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd241a026bac2a657f3ec1b5b7aea332597e73c2030863ebc21dcff32eec2e782. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292000842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1762ebcd92b0da0d4425609ce198c00426eb5c77d4536e79591bdfe92d07bf. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292069473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e069349cd88cfaa3e22b6affd7ee6f64f4956f02808ce13359188de7a47619f. 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/KRZ292082530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c2e47ea5459adb2638c025b71023564224ca928647e402de76657c0e8d6c26. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292100796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43869fe656770d727af9aba93066023fd3c6d8045f75a762d8f83dc33e497fe0. 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/KRZ292101653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce7f6697cccb667736649c95e2947ed1cc18994f63b1022204f27591b15b72a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292101654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6650b995ea58a93c50f558df0cfdfd4bcbeb9487ffdc1f2d1d56424afec7a307. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRZ292101655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8594b432cabe074df63c568a52596957b8ea412dda8362e6d37b5bc2b4a28f6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPP2125739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1109f00a6236cc0f64300d023d726627345c723255d4838644d677d80b71b0e5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KSA012272084.