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 0x52b9eb7f0b8da2160505b6239bbf9007042e026935aabb2aac865a3582e4595e. 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/1b2a6653-3bd9-4469-850c-c5afd8a59046.json and https://artists.proofprofile.net/proofs/artist/1b2a6653-3bd9-4469-850c-c5afd8a59046.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 0x64b12995c6286a8d8a33931bbd92ece39a711a5b20e13f686898ebaba008e5cd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZES81925423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e4c602ec7254d4f492aa3282e71342ce49d4ecfd29dbc9f3ec9d534208eaef. 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/QZK6L2088773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9194f69cc1c85da26fabd69c5e23538c0d7e217f4d720579ca75d554b7ce32. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:43Z), 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/QZS592200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92baabefd5aeeba7fbbf3e94490356084fdc4851a07ceed88e3f2de5e72b615. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZS592200005.
This Is The Last Time (Live From Carter Vintage Guitars)
This Is The Last Time - Live From Carter Vintage Guitars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b61e82c6863fd25dc8eacf81acfe0427be824c313f5c4aefa2656ee782185ea. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZDA62385984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edcca225371bf566e26e0b5267e40fceef142b2c9cefefe2f0075e4317337d9. 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/QZQAY2429981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5d8a7724b22232bc50564e8d6bb971f038a11700560c473b477c23a778fb00. 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/QZQAY2441179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6c6879eaff4bd7f137f3e63c5131dbf6a579d4269184bf6926eaa632928918. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZQAY2442060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aac987e9fa6652355f8686757c48b5cb0ebfaa0b1b081a045b9b595558a6ea. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:08:06Z), 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/QZQAY2562159.