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 0x03644ac8b86dc714f0b2506f1f56d027c20d7d4852174a7619ffe050c558dbfe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bae5b4a-3a6f-4f2c-b74e-7cbf9fd4e625.json and https://artists.proofprofile.net/proofs/artist/1bae5b4a-3a6f-4f2c-b74e-7cbf9fd4e625.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Through (feat. Belicious) [Astera Remix]
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 0x56f3a21297e3b95ec72ca9baafd88d49115459dcdbc2aba04fae6118d0969b39. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZARB1876095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f69a53a42c1d3ce33c06d3606ac4a6117fe971468416cbbfedfdb8d4fe1781. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4DW1835571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7954e8b585b54be718f1011499970fcda6b04ffb6814ad15a252cf9d77c5376e. 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/QZAPG1825356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dc2b5c0121c70eed03ee3a9178ed8c2da17c72a2ee65c58a9f2128cb01232d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UST8K1823482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7afcc0279469c80ead1c8efb294d36d4685b9bbca52b992e3f4e7d02bec687. 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/USLZJ1913112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a15a450aef35bbae754301ae5fef28f14652d5cc392840e5d810f6f3fdba2c6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBWUL2016891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e34c440650abe0103f4322effb6ecf9e7166be4e34476b41cdddab69d8f6a6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBWUL2541188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1344a674cd3a57a03a3ea13a091e9f06e80f854257bdf38fea49be98d9c024d6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:04:26Z), 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/QZZ8A2578052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6738941932740f2df8294986f499ccbcd34de55ac0b58be147ded14a6894b9. 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/CA5KR2323011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6738941932740f2df8294986f499ccbcd34de55ac0b58be147ded14a6894b9. 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/CA5KR2323011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e581e2356ee3ea3368b8cfa80fb0b62349b1e88b8609221203c3cd33e131f6. 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/CA5KR1844914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd154f8508df9cb78c8ae2ccddb6baee40047d55e113ac0f2412a716ad9ff354d. 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/CAHQJ2147168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffeb77ee904f8b2dde747eb8e2b39ac256c983732d3d0a95ac5de2acd864726. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GB2LD2110242.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch