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 0x1a5228f0babe256a40f19ce5947753d2e0a0186acfd79c1a6f7a5ab9b48407e9. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e24799d-31f8-4cfe-8325-df922e38301c.json and https://artists.proofprofile.net/proofs/artist/7e24799d-31f8-4cfe-8325-df922e38301c.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 0x78fd77c984496e28e747d5edb60e3b29091405d696b1058e8d91d8adfcd06f8d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:31:10Z), 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/QMSMM1103358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b07b2c75c939d4e2e3fe7799bfa48ecfd9605e337a534a2f20da95fdfa4165c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QMSMM1103346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf063a29634ec6abd0a3ddce4033afa7f48a1439815034348a4d466e00da29c48. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMSMM1103302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abb3073ad70a381e980ddbe0411dcb1b9b5eb2afbc6b11d0e9ad6ff497c4c02. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMSMM1103318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab49f595110ff93a0686ee2efb1bbcf9a4c23fd36e3693b5bdca01554b852707. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMSMM1103322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bcbf1a7a1b30d8faf948a76a09fcb306896469a68205c38335e90be292d4b6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMSMM1103342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206f87fe09c9127f48c67957211a8b7598160bf4f69eb24573cc86254ebf1cfd. 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/QMSMM1103310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc326e857964c54a8f330661211a7705e3ebe92b957184bedd9d1e9b35246a6. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QMSMM1103338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4cf3d82a1f2a523a24fac712381b249df28c41a8087afa11d18c48c7fe6b63. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMSMM1103350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45438def2b55634818f8730953b241247e4af077c7cc25bf34754bc6d8e30962. 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/QMSMM1103330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa672ccfe36530fb39f4b4cd7cc8f7014706ce6f184dbddc0ad0f1d961541ce2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMSMM1103354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8657faa21326f075c8f4e2fada1fcdc89e57c49e5bad10bfe1145669a4eae7c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMSMM1103334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328d6fafe89b5d211af1ad038d919ad26e51d410bdfba1d63bf62457893d0fdc. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QMSMM1103326.