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 0x9c2edc95e44c28f3cec9337301b62ee3826fab24c58fbb11d2e5dc0a77e1c630. 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/65e6f4ad-45ba-4bbb-9f3b-8848b90b0502.json and https://artists.proofprofile.net/proofs/artist/65e6f4ad-45ba-4bbb-9f3b-8848b90b0502.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 0x81c54e68182128b286081d627f1646193ef8874bdbe3871bece3315585946e03. 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/GBBLY1302197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0a02f512a01d82dc468c214e5e5d6bf937b3717366c8094294b566ec371e28. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T11:01:00Z), 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/GBBLY1302199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127e5f384ed497a7dbb76b3958c464294aa7ba0d7a166bbb4e817a3f76067c73. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBBLY1302194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f884111eeb9fa4632721a9241951f352f66403b6c8d8ce3a539f55f76d58e6e. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBBLY2206909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddda41820aacd85645b64a250bf4ca2885df4fe13d440821cca9f962c43ca84. 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/GBBLY1302202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2686290bcd85d2c4c5daf1ef52e012bffa470d47e0c0a838472fe71ac37df0ab. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBBLY1302200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3549cceaca6fb2e8c07a3e41d4c20c889515d4285a1dbe9e3f8f62fbf527d9d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NLA329877034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4be5ac21d86b2f9b292195fa5016813a89d7ac08208c82acd209dbd4b168701. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NLA329877037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8838e3aa026b940b6ec71befe714d4418efd156ccaf2cbf6d68ea9d57a72c0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBBLY1302206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2648691212a5f616eb328e4c092b8bc1fcb5a73771695cf666b046f530881c08. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:20:17Z), 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/GBBLY1302195.