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 0xe61ca52a1589b9ff00f9a279d1a8247c55e8166f73b4fcb0cee6a915746d701b. 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/9a429b80-3f64-4510-bf4b-171ab23ee660.json and https://artists.proofprofile.net/proofs/artist/9a429b80-3f64-4510-bf4b-171ab23ee660.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 0x0b74c1b7825729f219f020a3f151e7e593c79e4573810af529fee315d205dbe3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:11Z), 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/RUUM72000531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5ed010b449bb6e87877e0e804351b4e7868cccccc701011c662f6c87ccaf97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUUM72000534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36344a3ccc8072586157c59a23617844f08bd1b5e98a2a760977b7a5449986c1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:39Z), 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/RUUM72000535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910889a2e9d581719af17a4fba107ecc4af4eefc77b248837dd7468f581d207f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:35:14Z), 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/RUUM72000537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2185ea8b576ac666c9429bea90a3afa8e83c2ed0b10f5f726e97613ca95d275. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/RUUM72000539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ed6fbd4f837c723d9b560378ed6fba4766106b1f8fbd102c6166887ccf4ec0. 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/RUUM72000548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73117fbed9f40b777220f69f8b000f51fbc37ae168423a4dff57652566d4e154. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/RUUM72000542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d960d541067705feadd2e4868b1403615259c6073271b796aaa4cb0af129cc. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUAGV2405287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc177583fb02f22db9c3430e48238f1f4cdb6733b8e370856fa5dd3da0ca3275b. 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/RUA591801650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91680994135f7b6627bed56c58166ae8cd969dd0c2504e5d9ec57e9b943a4f. 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/QM6MZ2368364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728025f5c48288d8240e3c073f419dd8d2e38fa22a59983a0f1e08be374d16aa. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUAGV2304944.