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 0xfa25ad089dcf995066eb5b7af8233a4bbf703d4f174f416aba3de8c662b0d99c. 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/3c5be3ac-ef74-4ea4-9801-4ec80aadef46.json and https://artists.proofprofile.net/proofs/artist/3c5be3ac-ef74-4ea4-9801-4ec80aadef46.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 0x60b56cda8db133a816c2ae0df2d02319832a48cdc5142a5b11ff1f6b6920f93e. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/GBAYE0200926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ea8182f9d487e9716d83740fb2d87552759834dee86efc19afdb7192a7f8e5. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/GBAYE0200927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e36137338d203faa3dc0c2ce78e881c4a1914a468917d4bb9fd3efa1a58a5ef. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/GBAYE0200928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34ceb578db5bc49b1e37709baf9143e7700d2463359df83617d0b753e8e3b45. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBAYE0200929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5813cd3ae7f2f4de1e3062fa473f27bd07ee6ebbee0580c5310d9714ee4ec3. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBAYE0200930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e052630a75fe1a9f84c9df57581a3f53442b1fbd808a47056fb60a733f57317. 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/GBAYE0200931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1907e00e865643b003ce6e374d09c9fd6f3473bd0de9abd0a94edce2d8a0cdfa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBAYE0200932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73e8f3237de3296a1005a329aad6c57f9a77c06a47a62297e6fa1bf89567bb7. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/SEVHC0415010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7cb5b518878cd4d71925c856dffaaa773ef9ae70ca2cbb2c5f283da63f120d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEVHC0415040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aca9fe25d74c40ee1a9ecfb6a1faca9190090bb6aa816704a226d6aec05a228. 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/QZWFG2324356.
I Should Never Have Been Here in the First Place
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa277c6da26aec5247939816dc7d288d826f94890a3786aebbce42a01d43d46a1. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QMDA72296031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294e98c2a0ee894fe46ae14d5ac1e1c00a7a140607ddf5d055eacf2ed64947f6. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QMDA72296089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb4d8d29c05a3fa2dc8b7441859785aa870213a97fd6c38097f5703d3d4de0c. 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/QM4TW2483040.