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 0x9be878d66de682a11663dc6cbf6dab6587259d7b6215a69ef874450bfa405d2e. 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/b7bc4de3-ccb5-4c37-8dea-966243802952.json and https://artists.proofprofile.net/proofs/artist/b7bc4de3-ccb5-4c37-8dea-966243802952.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 0x5f755ae5a019cae86c31d44fbe842147d911dcb99756aa1c9a488a3d70255874. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLS2230583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f745fdbd93762f5af927cc1363bf6d30571b4f4818a58d2f8bc3c7f57b9887b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US7VG2088999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236a731b56a69215f75178514a5b40be9b8edb49beeff6a38e202c657dbcca82. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHZ42039828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c179164c8cac095ca11e1dc2346954fc5f9ef845f8c848eb44bf0b2dce8ab40. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ42145400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae76f25025e8c0411cb3f8afdaeab51592bade249971d7de47fe48c75214ece. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG2157198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe720a67640a1a2cffd0227a364a459e491701a063355e3676c87c26c2562df6f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ42145401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e11f90ec784356647a3bf46248a0ceaf406ee0db6ab111a9fb3a70f38ec111. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ42145402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f17d7c9150a32ca968f189a33b8f03374bc5277f058539212d76f4df9dc168d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:02:50Z), 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/QZHZ42145403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a67a445989e20472cfbf826809c174554cfb30f8802fb144b5d926f3d8ff7c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ41955285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f1078fdd089cec109522f3045b87490395175cd9934c3268b33aa744188d2c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHZ42145404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2ca9b3561d1f7d073188cc86e09bfcf40f307655c604a4640ac04c21171fa4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHZ32173248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9631b767e6bdf765998818be83c029c03e5bf2e58cd170362f8252fd0c956a. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/US7VG2157129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4157b9ecadd49451fa6537c2a3530b5851ee18ff7c552fcb1f883b7e5fbbb70a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG2157130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad325b0c32113fa4089e5f069784029f5ba039ca93e95d82af60dcabe91f65f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG2157131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a911fb6fc4831335b13e5c92992c6221fbd00792839344fa17dc5c1cb69115. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/US7VG2157133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f617dd85a9b259e0781df63863676b60c9300bc87fca07884456bcd8830d132. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1826985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920e92de478b894a778a5ee6cdefcbc9e0d5074faa56e1ada08602795d8a71d0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP1826988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1399df038fc583ed62566038d4f9cb14b73f47856c369987a3149634e2efc9ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLFP1826991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3871e8961bf5cd10f9f7dd7d2240744df542c30405441ebeb3d4206f54a3876f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLFP1826993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fb36de2a6f80fa2886233480d53604bae0e2c4dce5eeef5b588fb1c604f644. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1827012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7f9ba1928296df4aade1875ae2b56df169a394fde4bd53fd14ae0bac477db1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP1827019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e5f486a37e2dfd266a13df5d04c1ff9ab490ff890e0233faca432d378fec7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLFP1827020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193fe1aa2672eb3fe15f13874592031bbf2c762fabcd9eba8672dafbe9e8a9bf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP1827024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191386e679f105d0526362cefb51cb3870ab5fd88c5bccc0b462989ecd9271a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDY41757539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf75fe82599f646c141e9debdbaf27579b1e08592933b8b5c4df4f3e9bde2094. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDY41757540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727b119be17c04b1bb47de2a92db64af59bd521003d5f29e1ccf1f74bb12b739. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDY41757541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e69379a5103809d1769fb42513581a600eac49196affdc81c8feb39ab647021. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDY41757542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4df2ddd1dda2a95712b8df80f97a9177281d234e030417f202261c0022b7bde. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDY41757543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabb05fe5dadb5a663b517b7afea70b5905dd16e3a1f98f049138cca4a30de08. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDY41757544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aae9809ddb77d1b18d4d6b0cebd066182d645bd538c9dcffa5ca97a10d9871. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USDY41757545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236a731b56a69215f75178514a5b40be9b8edb49beeff6a38e202c657dbcca82. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ42039828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f745fdbd93762f5af927cc1363bf6d30571b4f4818a58d2f8bc3c7f57b9887b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG2088999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a67a445989e20472cfbf826809c174554cfb30f8802fb144b5d926f3d8ff7c. 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/QZHZ41955285.