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 0x311762487c0920619d7b6a248828605130ad569ec00a9b930534e42bba8b0ee3. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/295b3ba8-2ebf-437b-96dc-209170752013.json and https://artists.proofprofile.net/proofs/artist/295b3ba8-2ebf-437b-96dc-209170752013.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 0x3e26595a157b6b4f9aa1ffbb32f3c4213db3bd5a941ec989296bb044a9df37cb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282477634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae914994728d938d3cb141092bb684067f52cbaf9c85067e263cfa64e6ddb2e8. 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/FRX282477635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94eabac3532ed9d04352d76cee02896af11042958229f7e02417cb0518010b2. 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/FRX282477636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f830911698651e874962513cf60d232cc86ed4afb21e62de00166ad26f15d52. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX282477637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e8bf8f5dbdf51dd1a79c73dc66ec2ab31f596bd3146c04f92dd32efafed14e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:08:02Z), 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/FRX282477638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25f6af4ddf66cf47da0b2e083a849b69a8c1861a27f137f717ba1d3506eaebc. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FRX282477639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1ee91f0a3001df2309e6cd35307bb1d45caed0beb18f13a89184dcd9f691f4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FRX282477641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b8d45e6c546666375f00df6ca1eb7aa86d2d342f8d5f5de69e4f4b546a1145. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:31:00Z), 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/FRX282477642.