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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514a9f41594313b077e04727cbafdd743f8cb50e354370546cec9cc2c2d665a3. 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/0923038f-94a1-40a2-ae50-65604928159b.json and https://artists.proofprofile.net/proofs/artist/0923038f-94a1-40a2-ae50-65604928159b.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ef96da5b373c0f96c61ec5d457cefda6ab1fee7586b654ece8fee1bf0498cf. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QMZ7C1200134.
Einstein's Dream - Interpretation of Mozart's Sonata for Two Pianos in D, K.448
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164ec8740a791ada1ca73ba5bc500c964605746c44c90e0713768dda9066e409. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USTC80920543.
Aurora (Solfeggio 528hz with Theta Brainwave Entrainment)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b4719b656437a1316aa36fbb3b810816a4e1e51fb55d8cca52cef3c36e981b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM4DW1660914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7ff2af6dd7a6cbae1ac937099aa23265cee81c02a9f0ba4598ee5b9f5ee7c8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM4DW1660915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac17bf2da44ca6ad9891f9f6d83169eda35cd63c4290ad29fc253c28cb55ef8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM4DW1660916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4872727da9dfe886591141b2646098d16cdebb2b0e97ed9f00f28ff6b51bd21. 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/QM4DW1660917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9033472610c46fd5d7adc72c7dbdf28da6028ba5d50ece85d88a096f8305d8e5. 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/TCACT1641141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe02ab7858304d97712ecbf10aba59a7f777b205870ae4de0c70b4427c8d0e. 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/TCACT1641142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728dafa7aae95783d182531ec665db94798bac4dc863fa0a8c3d737a7a93fcc3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCACT1641147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100e52edffb7beb000b75467fe04d815f2ff87da7292e832dfb423d28d42f3c3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZ4JJ1746948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e572d369343366113213025183a8ce2d114714248d186745775af398e4af5db. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QZ4JJ1787920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d745fbf2fe98f90b8bee6aae0fb4865928c93ad3b7609661a0a047b9cec95f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCADB1785765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bde9b862ad94e5e62ee0575eba59b4829cc29f63ca767615311b39d59e02d86. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TCAJX2535464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f60e3782f5d2bfc44bfec80619a0d9ec1dc7551fee3f58afa8ab0d5c9ab1d1. 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/TCAJX2536893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6902301b561978aa0a46898d3254d9952311d1a1d2eaca540f4cb268b177ba. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/TCAJX2537062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483696039d1edebdf3cc194f31da89a7ace466db22fdf5a6806056e570b2401a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJX2537252.