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 0x65cf727e14e062508db0acf159523040e75aaa746cc61ef359fa5e8852d7e102. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/873dc459-319d-4741-8957-c0237d0caf81.json and https://artists.proofprofile.net/proofs/artist/873dc459-319d-4741-8957-c0237d0caf81.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 0x12f970f6b7a283487a5014495fc3b5b5f024baefa7fac9de2dc891cb98fb8773. 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/QZHZ52122794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699a560d742af17b7ebb1f135ceaf5a303232994d30981d516c4662cbe930812. 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/QZHZ52122795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3d8a76c25776da49ab83c95e4f2c8f9212fc2f6a95e0681f560d8b3ddc26f6. 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/US7VG2130117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf71b291630a8c89eb3b0ce70768663fefb8082946e6bf47fc620cd34d57112. 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/QZHZ52122800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf25bf481e6191d6220a82aa6d5eb71a59176171777ce21e818e22a647d1a14. 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/QZNJV2048614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5954531e41bdb202014f5b3e0e5222c189cde419be2c4ccfd88d98b4e76936a. 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/QZHZ52122801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce0f6ea70cd8c4ab24d57eefadc53dfc984ccd647b3e5281a83c0d577889bd. 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/QZHZ52122797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85577563db351fdf45cb76c10c33e06e41b2963f9b26935bc6025623f63d2613. 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/QZHZ52122804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8340e686d3793f2e19e63d95a86e8122efa751cf6348c85c69d0508ccd23c00. 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/QZHZ52122799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5038b91f854be0171bbd2b6963ef1ee48de54d7c09a44d18f34420e50b1cfa. 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/QZHZ52122806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fda49c177e48f9536536380136406846f1d48409ec7a8c883989e661e9c51a0. 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/QZNJX2011850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d248bc0d7d07aee9cd42d2c21e92b6f37ebf32e0942e2c0d92ee76cfafcb696. 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/QZHZ52122805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89986a9804c138c8f344b266f8161ff8ca082385e8d07ad41d0b8cae8c6286d8. 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/QZHZ52122798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7609f74e5bc5513b86e3e4681ad1d55bf933830a78f6b01e52300ab15ec2e490. 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/QZHZ52122796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c030ffb55dcdcd25b77353b5995be2961c04be46668e022fddbbcd773ce7927. 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/ES71G1602528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32061d7c2dd6adbdb21953d5a2dd6d37eb3f700825e17739cc35ece8ac9b07a6. 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/ES71G1602529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b76615f959fac96c477a5d668b96d97dc389518d3fa855ed4528d5f28ace0d5. 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/ES71G1602530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a81fd86307eecea5d96a20d6b20a321d6884d8bb63b575ce2a8731e634ffe2. 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/ES71G1602531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9857364b50dc4306447e34e3edd224d68ddf4d874966f63dba350567db70ef6. 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/ES71G1602532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95131f9b431086af5d276ccbc198741d2c811741789cc33e66723026ae5f637. 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/ES71G1602533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb211c8304e9369f9845c99f2a2139aea71866936fa5216212ac92a5b099ef449. 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/ES71G1602534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8132b1aabb7631d29736283fe09d4a4f955a08a30e55c1911363581a575bd8. 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/ES71G1602535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee890a9ae379904601391927c96608c58ae668dff0af8fb3acae4ecc70910fb2. 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/ES71G1602536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea4ffc26e7dfac251b5d3e83b63be6b42d3e9f29fa99b2f362eb3e8d114ff84. 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/ES71G1602537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c8cb7afcbf677046305b209f2437ffbf6450cd0fc5a760b297db61ce93298d. 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/ES71G1602538.