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 0x918c2eb65af3ca182467046c81d85696ab8ea39aa14cb0f3a39a5ac9d05760e3. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bfcbf1f-6a49-4fce-ad30-b57af8d2dd14.json and https://artists.proofprofile.net/proofs/artist/0bfcbf1f-6a49-4fce-ad30-b57af8d2dd14.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 0x40dbc26f2424788f6dd5b2a2e48b3cb8eb148ed012f9bee7f09687f53f0719d1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBLFP2361542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dbc26f2424788f6dd5b2a2e48b3cb8eb148ed012f9bee7f09687f53f0719d1. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GBLFP2361542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407991cc994eeac4e041aa6da0e979e0e3aa8c224295a2d58875139e16d9c9f7. 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/UKXN22302190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407991cc994eeac4e041aa6da0e979e0e3aa8c224295a2d58875139e16d9c9f7. 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/UKXN22302190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce3a696e1f472554fbc6d38ee3a1f51f70114bc437f0fba3eb4606ea65740bc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKXN22329461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a33d74e3a17767bfa1eab7befb221e271de673115f90c5e7859e28d8b10339. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/UKXN22361584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e5548ab9eae644f49158c2c7e1ed615b2f8667d5da81cfa74ec1b6668d6d2d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLFP2461823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945522566fa01a15c8a49833fe4a79fa346c44367cf60b4ef3bbf1714c47b116. 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/GBLFP2461822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dbc26f2424788f6dd5b2a2e48b3cb8eb148ed012f9bee7f09687f53f0719d1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:45Z), 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/GBLFP2361542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407991cc994eeac4e041aa6da0e979e0e3aa8c224295a2d58875139e16d9c9f7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKXN22302190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce3a696e1f472554fbc6d38ee3a1f51f70114bc437f0fba3eb4606ea65740bc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKXN22329461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e5548ab9eae644f49158c2c7e1ed615b2f8667d5da81cfa74ec1b6668d6d2d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLFP2461823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945522566fa01a15c8a49833fe4a79fa346c44367cf60b4ef3bbf1714c47b116. 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/GBLFP2461822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77257e0f04ef5746291daf3e471108973629bccabd9d4aff6131f826c5dcc930. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBMA22430276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77257e0f04ef5746291daf3e471108973629bccabd9d4aff6131f826c5dcc930. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBMA22430276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc8128884f8c6acd058b8cb26e299cd3bdb28495cb43b8291571530c2e50f41. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBMA22382381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc8128884f8c6acd058b8cb26e299cd3bdb28495cb43b8291571530c2e50f41. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBMA22382381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6717c2c07fb3ad8971adebe6b2ab45692e2000d792f9f89a077cb049b176563c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:11Z), 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/GX3Q92506551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d14b3f81575658117107d77f0dc00d099a947e960db6591ad2a0c3cb1babff. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:25:03Z), 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/GBLFP2535501.