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 0x913d83de791a5dd110da44bd09feaf6c55aea0ffe74d74b29261ee4b16515324. 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/cba64d7b-3a9e-478d-886a-5df4f5aa2442.json and https://artists.proofprofile.net/proofs/artist/cba64d7b-3a9e-478d-886a-5df4f5aa2442.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 0x0c5b4a63798c3c418228f6d03f9d1491153581adf67fab0b628cfb6001080fa1. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FRX282025817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77b68664521f65fcc581c372c96e7818ca79584ffdc6682a95c25859f91ed7c. 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/FRX452130529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641898c8ecefff104776b01709369bdbcdc3ae7148ee35846935c2793e80fd93. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM4TX2254597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e67e0cd1da685b977521cc2d39cc7359018c6a6663a56b76e39e26b825cf18. 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/FRX282209883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cf0b2a9924d491903b8736cda30f9b53dbb25355563b3db53c3fef3a5effeb. 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/FRX282272736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aa9f8463eccc025523b7c0ccd51efa7e5d5744cc6b4103d77f030306cf9540. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:23:50Z), 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/QMDA62317947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fb9f71bcaeb2d282d415207258c1623fec9abf3332a7f6591e0bbeda93e236. 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/QMFME2305669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ba838b578e6be6a8f644836aa236fc073dc61d95360a3c6fb9665c65bffae5. 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/QMFME2305670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119eabbe5fcdce04ce76d01b1371ad51663108d04adfd3e2e2c6aefafd529714. 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/QMFME2305671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54901d1a744451d11887a12d1b3a592cb8041d9a75a8f6f0c5bf7b3a75c8180. 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/QMFME2305672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384060cf88de6e40b1608e3dcdd5b9981dbf835b405f75a73c1f71046dd236e3. 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/QMFME2305673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5919c8067d220125e2d9523d72d4f9557509c1b8088d599611f4d119dff34183. 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/QMFME2305675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8540dcecb0b9233cfe43b339ad8b68bcadaf07c0284f0dba4c0af6c913c73e. 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/DGA092407657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc833af5db2ee8d2986de0eb550d58a147e2149ebb412c09ce9bc30659d01ba5f. 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/DGA092479616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf232b8985b9d91dea0621058b1175bbec48700e6e5bda7ba862933b805506715. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DGA092415603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567becdb5ddc9efd8e6e93150e29f50be2faf26c5d7a7dac57ad6cf817c12018. 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/DGA092415607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7af573d7d3db22fcf1dbfec2f5c91c9ef584a003ce9e1747d2a4ed2c9f3af3. 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/INUM72000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1f7feba0495245a9fd77597da0f61fd2714e4d92910799d0df42c4fadaab39. 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/TCAGG2220647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf83424cfe232cc828eeef3baa513218d65a4d9e383bad9f75bef3b350db4b. 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/INUM72000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7aed951dbc10f19e7b12afd1f54a1e1290c08277d0d2ad756b1f6926cb6922d. 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/INUM72000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc051ad233373e09b1ea6bdae3c5646cfdb041d25acd7d0b78cea5ef445428c75. 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/NLRD52074497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a22bba8ad42b52cf2e6c0c44e8099d00615476f0bb78fbc83af837a26a477d. 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/QM24S2007231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6163d9deb57fceb0fbd845201356f7dbb16692b5a55364da669fc4965feada4b. 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/FRX452439020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7af573d7d3db22fcf1dbfec2f5c91c9ef584a003ce9e1747d2a4ed2c9f3af3. 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/INUM72000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deaf7b9d1f51b86b89290fb96070b4a1b1f454c0916c7692c2e6154b2211758. 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/INUM72000106.