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 0xd310434e61628b3e05b737a0efd0ec1e124a9ff43dfb0db3c97f1506156880b7. 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/95b385bc-b805-4615-8ab4-2ac861476797.json and https://artists.proofprofile.net/proofs/artist/95b385bc-b805-4615-8ab4-2ac861476797.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 0x1a7e2df4763a187b35bae3c84146a72b3964c9164a6a4379433dccf45decc265. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:08Z), 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/FR10S2462128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb511bbc9b6242a0bde9df84d46f113b034658665f61703ab3e0cd828773f2d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR10S2462129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f30476e6d1deb327ba6cb017b53a78d8c8721763625b9f567b8dcb1675a815. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FR96X2216250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8176aac2e6d114c699f2f6936f8c39c9835d83a93c28bb7639f2dba9431c16b4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:24:23Z), 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/FR96X2216251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d42b2c1580be0148a26aa3aedc90ad53278b73bda6b255f0ebcf9bacdaa6da1. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR96X2216252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd941f67214ce161e5bf8622c6d7b5b88ebfa3d453f88dd6d7d125b077771f107. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR96X2272872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ed55c4b5758799a6e24cbc1267ccd99e3cf40ca88b9ecf2d551628b3b3a23c. 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/FRX202244454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e004f4d1385881ebadaf68497ad18cfc977eaf42f717b7afb2d7eae38bde57. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FRX202244455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438a668e3bf26bf63ec8779027d358d134ad2008df765dc9c2016ea4bda4940f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/FRX202244466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ecd7c0e91d41b558bf13111998a2f82c54ae7d8962984978f9564c8cc9aeec. 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/FRX202276560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74996d78cf84e3baadd31799ac04f67a7968daad1da4a6fca65642172076dae. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FRX202276564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3df6bf136894119efa3bac832a571e37506d2b9aded5cc091e570ee5b79dd22. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX202296290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b0eec95e75eec97f07510ae9d848fb598a98fee02cf241374a7f429045dc81. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX202296294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b30674f5912da989b20a2b1b14c06a01e9efb681aff13b30f3a6dac0adff4f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX282228292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377209cf6fea6d8ac7593e1cb0b863e83938cadab730f4e5a3effb2a2e8ff3c6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FRX282228296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba1859cae3c1198fc36dc403b37bc600877ed22322f33b7566adad5d96f0c78. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/FRX452251385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53669f870d66e8a6fc421c4ddb14bbd14e03ab15da3da5641fe17a288aa1bf43. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX452251386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814f361139e1be879d76d4099ffe0de2fb325d78aa1528f9f56a0bbe06dc8e3e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX452251390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12141229fbb7f9564987fa2239ecc2963823400e28cb75117b94f7dcaa2a629d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX282357877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb39488eb22dd55eab1eaa8d7acf4f57f5308fdfe42d3281b1776a78b5a2fce8. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZTVM2509656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f77c7fb68daf7e0cc36d93f1b07b06296f12a15ee2a9213902d5a2cbec0468. 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/QZTVM2509658.