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 0x7562df0edf405559caf51d8f6f9694155ed6ff2e1440ef00152599bacda3e26a. 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/ba136e4c-1c90-4171-b445-a1d9f00c02ef.json and https://artists.proofprofile.net/proofs/artist/ba136e4c-1c90-4171-b445-a1d9f00c02ef.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 0x7b7028c29118be02581f5f665d4417c75cbde05d720fe237087cc0c4dca32c67. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:50Z), 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/BRCMP0400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f5310f1ff5f76321532ac22dd2a757b5f29ecd30c8329bc565593eff77f6d6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRCMP0400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbf56ce7a68a923c08e9ad34dee17199c74c124773088af5a854ff45c97d342. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/BRCMP0400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa73f3706e3133c86b8f9ec4bd58c2419353782135902accd89c5080974a2494. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:37:57Z), 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/BRCMP0000496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0141079c9e0f653e51cda5b7824e22b3b70c141d1a2790b66a7761e75596e9aa. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/BRCMP0000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc1d3670d9bc97b336fbcb43d8d714ea7f6cc75e17f03d1695c6485eadf424b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRCMP0000502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ef0cdf344bdcb765f4a140f0531e1db8f623b1661518d0dbd9d1ed988f8b53. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:30Z), 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/BRCMP0400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872754b46e5a9ad4dfb7a50ed2d757ebe2de6ab0f43ed4ce6c6159885c8151eb. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/BRCMP0400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6f8a6d498a48795088f62c3ae357e4f61fb9fcb8aa824956c596366d13acfa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:57Z), 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/BRCMP0400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e32530939525e886eeeb4b55c61fbfcb023830ff702014805966855b2c8fa4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRCMP0400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a9221be44bb24e8a1f11356a303ecfdd7808143af356cff7fa9d2ff4aec7c3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:34Z), 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/BKOGN2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf9605c88c3c30c0e2c7f9833edf18bdca82c542ba8cd2e76c7cb9b97bddf72. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BKOGN2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c466bce1dfd50e7c9b06674136a677d60c79110b37de064ffcdbcfaae8b979. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:59:18Z), 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/BKOGN2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fb6c3559c25fa215d122d93b100e35abc47777ccb87903b3211fa4532df1ab. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:04:32Z), 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/BKOGN2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9176aaf64244d307654b416e0db3333baea5f3a6cbb9480629180ff85ca79a85. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:48:09Z), 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/BKOGN2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534cc8fdc704f33b5a7e9f434dc2df28dc9c307d735078023fd9271f855f08cb. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:30:45Z), 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/BKOGN2300011.