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 0x2b590eeded1e379b589e6f9fda849d359940e6a58cc9ee3f2431ae0f8715c1fd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d92f3dcb-1605-4bc3-9db4-3732d649539d.json and https://artists.proofprofile.net/proofs/artist/d92f3dcb-1605-4bc3-9db4-3732d649539d.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 0x0035d517c5f7872e55c1932928c76a9b04e79d90d8afe34994e8049e5898e267. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:31Z), 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/QZNWU2120539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70e7d7231f74a54373f3340d81e71a3889578ae96b1001e6a906c7caea79630. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNWU2120540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7108de85672f34c08b5b9afd3e180ce8c05a8be1e92773d02758b1dfc67ae7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZNWU2120541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d08a903b1dba39a399383cc1e1be901d04df8cd1f39296bc444361d0f7b587a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWU2120542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0f8feba547a66ef499e1ff5e65fdb349f76d7ac071f9022b68bcfda0180091. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWU2120543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61aca3ca6a520f6449898d3bb6e400f21e3c3507bdac63b1bac14b8692ec514. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZNWU2120544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6f3ff083f9b3e6f28a5747da20977e2ca14afeb71d344b00005010e114bd11. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHN32233653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913401a586384a2a22b255f30c19c79891b9b55cb4949fdc76c0e97f7c030cb2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHN32233654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3845354900d6e8dcbbe9f5576450562e68a05c0a4c914f4d0d140b4c8c1634a5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:41Z), 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/QZHN32233657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e4e2ac91f9f22f4804fd250cd8c9bcbe9d00df4921184861c2f78f28f6d6e7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZMEP2240639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6abe30da1485316f317d2e3968629a0c4c707098a8c67b4c616a510978c948. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:35Z), 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/QZMEP2240640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4735f8726bd2bec6b95429a14542f42a6c3f9e2523801c25a6ac950a323568d6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMEP2240641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c6cd9c9a83116cb7cf1c03b84d54ba555d4aeee6a4278cb3d96e5604c4101b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMEP2240642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c0b4a1f5c83360280a118574446a9fba29466d7aa6ac4ad730af270899f302. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:35Z), 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/QZMEP2240643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8160a6744c3787ed73d763107f2e290f2816b15c04416dbfa5b4fb3d8617eb5b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMEP2240644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8131dcd743f4de7aeb8e37fd0457dbb48a5d83d2b4b2144eddf36012e835d282. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:59Z), 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/QZMEP2240645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ef8c341e7d1f5e432a4898f1cafc0819cd58cd8c180c09050cb8efae26b00c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZMEP2240646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9449413e134523f00144902da5b1a92dc61697729a74ce2ccc64d16d46b0e0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZMEP2240647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816bffe016f70c0882b9f7163c66f1ce7d16170c0beb86803a7f268b48e3e27a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:13Z), 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/QZDA72377872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b9ab49b7e5eacdcc721cb83cd5d0205224a9017c1b19468fc4222ca0c24a4. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZHN92333194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9038f0d89ff8599cbf9a09b2ab1585b336d3ae50b8bc51fb8493117687b20042. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:23Z), 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/QZNWV2491709.