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 0x18b6ec7bd12896a3e82d07de17e39e045b692537c17bbabf144c1a7da71948f8. 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/386027cf-f838-4914-a186-c551def89af8.json and https://artists.proofprofile.net/proofs/artist/386027cf-f838-4914-a186-c551def89af8.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 0x79694d541aac7c8c79de076c9ee3a7e4a077a092c8e4a48b9436876350b24b00. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/TCJPN2038798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e05da9222015576cc8f9e43be8f86c95a54b0fbea0d69dc812051cd34b171e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPN2038800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e05da9222015576cc8f9e43be8f86c95a54b0fbea0d69dc812051cd34b171e. 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/TCJPN2038800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3bd56fb21d7e1d2a08ad2bc1b85cd72a9b869386c0fc9c7ac457c93b37bff8. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCJPN2189437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3bd56fb21d7e1d2a08ad2bc1b85cd72a9b869386c0fc9c7ac457c93b37bff8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPN2189437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa101fde78be8a98049b5bdc300fd8b183f4a25072ff7dbd68ae6b1ed6ebccb01. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPO2122812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e98a4fdf664ab0cc3f9e537b40c1286ca78017e8c3eae83e175a3193147e5ce. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPO2173617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5492d699bdcc0d59d652eb8da08605dcc714630a1ec4557a57d470a246d791d4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPN2198725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3b24e07cc9a0cedf4d7394c5f0b6a4452f15062a25301d2326e2a4db9caf3f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPWP02101211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3406f24f19113237d0e5cdae6534390c6a2c4942fd06851ce451e3b9cd2f89d9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:25Z), 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/JPWP02101215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0528bd441e90f5661c53047fcb16066f268752bb6b54ea59578d2946a65cb7bc. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:26Z), 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/JPPO02301280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41aaa76a11d43448ff9681bcf1385704126990c86dbf5703f6d8b68cfa3bb30c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPPO02501309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4a115a74469aa8adc30563f93271cc6f00ec289135ec53511e12c72052b7e7. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:30:51Z), 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/JPPO02502026.