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 0x16710fafabe67368dae4dce1129bbb80add601f149ef47dc74582b451907e2a7. 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/b55f6fad-c926-4b7f-9187-e6613912822d.json and https://artists.proofprofile.net/proofs/artist/b55f6fad-c926-4b7f-9187-e6613912822d.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 0xa54fd0d2ce4dcec108e25127d802f45495c0354184f4d3c931428d2765c59050. 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/BRC3Q2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3d6b41fa1e4512c415c04f49766e3f391a47f6ea60c81b93ac365e2d4abe52. 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/FRX872104384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc4200a8c802fb56a42749419f28029bae90fce60dc8522b3c3470ae1ae284. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRC3Q2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3dc1b7a328e96bed6f0a05063b84b063331407eaf82e899a92b44d5483aa92. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRC3Q2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584a2216a1ba40a29d375ba646cbb5b2bac5abb6c11fada943fd9dfc4550396b. 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/BRC3Q2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f78dfec68949ffeb73522546dc63ca0bda8634030cd370b954a099244f38406. 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/BRC3Q2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49470699f311c76973e96f015752d2e6d8f5f55076d0fbadafc31d54cec32fea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRC3Q2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aca738ed228d6531965043d222fecd13d69b67ace79fa1d183df97907cb925. 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/BRC3Q2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efed0dc255e31b8ab508f5d1419beb8a7cd4d06ee0ffa139233d135357dc87b. 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/BRC3Q2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fe38c922219ecee4bb4406aa33ead975d78fc7c8f94a9a0dd431fb21877136. 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/BRC3Q2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b595f5eddd6aad6c1cbbca7e5e093e47841f4d0e68c334110aaea17ba0aac74. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRC3Q2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0483f243e9f41211b57cbb5966f22e99cc5311f2dcffae56cd2d494d12981e02. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRC3Q2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4c310e795acf62c4bc581a63ad116296eede3bc72eb66a2131d5dd3e48a537. 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/BRC3Q2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72580d57d79e3e85348f7cd51dea05efbcab9efe8244040f363fa1bc9aedcf3c. 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/BRC3Q2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6ec537f502872d6636a3596efdb67461d43595a87bb44efbc1523fadcd72c. 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/BRC3Q2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea8fe7cfdb056f814bb5813762c14ef3749071d0264fdcdf7cb78ec3c48b383. 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/BRC3Q2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4959ff72b275cb5f49ebd545d839321d8f27b7cbfeeb00dda7e61540343cf61e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRC3Q2200002.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1a4759fa9c0979cb183c164f447bdd957b1e7b80680b6672ac20a85888f25b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRC3Q2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60408fb8c53811cfc922652a19fc5582881dd42306da414ede7264ccc3ded2df. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/BRC3Q2100025.