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 0x2e11ca18624006ebf9861ff14429e01c16d71bb751212e3a38acce6a8c720fe7. 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/e6e8a76a-3ce9-4573-bfc7-397ec2f9c7e9.json and https://artists.proofprofile.net/proofs/artist/e6e8a76a-3ce9-4573-bfc7-397ec2f9c7e9.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 0x88f895ee494573b0b39d934fe6f3aaf4b6eeba53fea7a0ed3131c90e2b0fd041. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USCGH0504421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf11c643684867331a6f9a17f80126152c24d69e7cf464e377a3f592608304d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:58:41Z), 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/USHM20660235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32a56faa242ce698bce6c32ec5252c06e5df7910ae640936ec2beedc1920f56. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USCGH0504422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3716dea6d0a9d7448fbfa34999cb2d7c649515ea0309387002b25027cb31931. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USCGH0504458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48377ec119bef455fe79ab7609e0a8a15cf9e716d0ca2c1b0b69a3e88a739dbb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGH0504459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbd52228cd4433394facc97cc8fe6766b1a541d6a1f7d2b324fefa0d765e8af. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGH0504460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b0e8c092a506773ef810dc3bf4e031dccfe55536bc7f5514f5c355b266a48d. 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/USCGH0504463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0b16e206dbe7272eaa9e625860385f1d16908f77117c4a460f133f2eb0420b. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:13:11Z), 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/USCGH0504465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28a9c53749972714e786cf3197398be9abc0aa58a9147df18c65c6bf234d9d0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USHM20973651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2c140c3451e311f151f25d88655d3730cbb1983d14e9037585bfc6b7e40143. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:19Z), 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/USHM20973653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9df366a3f313328ce2d188098d1d8ee8abc70eefb331bf9f2523d0dd1e1afd. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USHM20973656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd525cf939202b661c3b860c97b7fbac537d2692f5d6441e55fdc227e6e2b8f27. 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/USHM20973660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecb046df5aa63874b4d15f8e79b0605473787928178ca0ccf78e38e872339d9. 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/QMDA62281351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1593df049d3f652d2a0d797b772c1daae73b9186835cc6ec163afd4d6fe885a8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QMDA62281359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314ca7b3b87fe8c1ec5665fc24268224fd2eed286386d19559067fc2c0ad69d6. 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/QMDA62281367.