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 0x67c2b1eb7821b41262d941e5121c6beb3c513fbf501fe316695cea0824b1d016. 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/8f3a4c7c-caa3-4cc5-b85e-bd8ca9bb3dd6.json and https://artists.proofprofile.net/proofs/artist/8f3a4c7c-caa3-4cc5-b85e-bd8ca9bb3dd6.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 0xf45271759b481138a86927e0f4c21edda07f0803cfe0e524043db6dbd95a1c18. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/EGA252000363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cca22d7314ca3657b485e1213d172697ee3e2abf28571b3d9b95a8eb1527ee8. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/EGA252400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7d590fc4453b5d6180c734cfdfc599a7285cb4f95ce8e054bdb9af9092dc69. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:53:59Z), 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/EGA252312386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa190a8e066d7e0043cf9c852d3a2d5f97ef5a3545294a1d027f85f9ca9344400. 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/EGA252400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7c89113caec2485ed0ef48f6b18e97c53b9ec5cc0758a6c9852e2a13423eaa. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/EGA252312385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb722039931ead4ec602fd231946f1d3045400bc63e986232d33045efe70985f2. 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/EGA252312387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62235f173d28468f45c868382a1241879d4074fd4353d8b98136d622116d5310. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/EGA252400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb52c30f8fd9e63486b91fce5c446b9002bb9bd893b9e049f944b0d54ef80e20. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/EGA252312384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7a9fc963c7a300ac80b5bd3aae1f1c5140e7abcfc999d5ff11182900f1f517. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:59:34Z), 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/EGA252400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bf783ee874b07bc8498aa20167e647dc667973c00e49ed4276f337ffafb331. 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/EGA252400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3812b0599279540830d175fe7b24fcf6f85baf5a5dd40d603dbc8845a63b48. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/EGA252403176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbad40a71bdd22b7c54bb2ee04f57cd18a322e9fedfd7e3b2a2f3ce24652263. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA252403561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d960b3aa3bb42c5144771fd812c89dfefbdf815abec945debc35fa8b38809d. 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/EGA252400550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217a342a7674dde41040d5c28948bcb04f3bf962ef5dcad7624359341529fb13. 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/EGA252400551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f21d5c1f2aa6324b85663c8b5f488633f960aec8d63a2c40203859c9d392fe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA252403562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1398fc6d7fd8551080a194b413d5bf878011b0af0d3a460fa901cb3b9c39c141. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:08:28Z), 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/EGA252403175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b7d469063e2f9243f259c63e2fd43b697bba0932495658a14b96a3c05ef19d. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/EGA252403276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaac3e436519022c58a9a88af4f4a081b419667928d345c33467e89814cb051e. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:32Z), 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/EGA252410441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99856f30a44bf1c8045d118dffcf97c984960d55b566f5a2476fbe9d4e632a40. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/EGA252415566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57203aa4308d7a22645a5669fb98335c7e6f580fc43aad4dbfbef7fb318e64e5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/EGA252416218.