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 0x1ee413913574b05171dab03d730dbc10d3b3b4c37c0a2e5fd78d6002c75fdce3. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2c11bdc-61de-4621-a9e4-6b4592e70317.json and https://artists.proofprofile.net/proofs/artist/e2c11bdc-61de-4621-a9e4-6b4592e70317.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 0x2b0a096325045418656d9c9d7f8519d7d92615ee3a0e06cd3777fdc7ce4cfdad. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ATME52310002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494c440d05be4e84bd31e43f5dd4c5be1cb66cdba5b4e156da449249305a6dc3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATME52310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38823b5691264966ac247836c1f58ffffd9e488d49e084d94d30216981911cbc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATME52310004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72df01b9274bb19fc92ad6b2c8b941a8ef38310bc61a40af6ad6ab850c349e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATME52310005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe73e4e0e942896bdb4a16b2fea4c546c32cd31a75d5fb69a4cc61165ffdcceb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATME52310006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e2a61f734b8d109595cecc0017dfaf90a85cd497b50647eb7c8c4deb68f204. 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/ATME52210001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b140bc7acc3ffda5e14f10b7bc3fb318a79523f49bf8b89cc0a3088455a843. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATME52110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c07b8ddb8ebfa666793d23a1c9f67d9055cf4727ab89675dd6c2dff22b2e9b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATME52010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc783b2b43b876723f85809139d5d7f15cf796594b781852074b48bf557e7b90. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATME51910002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e42d8d9763e8794dc8660480b2aea9fb5a8451d297d17dcb6746884da517f6e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATME51810001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd71e0411c380766759d2299f89048400c6b37abfb2546bffd6fb90154e7c04. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATME51610003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0a096325045418656d9c9d7f8519d7d92615ee3a0e06cd3777fdc7ce4cfdad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATME52310002.