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 0xdb1f7a87a4788b362ce34677ded485cb139694324cdec495ff9a5a0c5adab107. 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/f000e7bc-38cd-4fbe-ab4b-e86636d4836c.json and https://artists.proofprofile.net/proofs/artist/f000e7bc-38cd-4fbe-ab4b-e86636d4836c.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 0x26bad05b796e116f2cd5ddc9d2aaaa83cda9cdf77b36b5ce9dba04ae58e76f3a. 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/QZTBE2315653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f68d01d769e57b4f693680f92ab30f5e9582cf0cf1a7f018d30ed6cf06380d. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZHN62465149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03e038d212261bee739a047d1cbdd3d7a33f8a0b0df0a2b896fdf227ba1a54b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMEQ2485101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54ba642b91012d18626ad2cc64bb82e57c03fa69c7fb000ed267cb5b4ae4a3e. 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/QZNWV2469965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca1815f9a7ae31e251aa8208ffd9131e7f94e9c3f14102274f8c48c7ad36f18. 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/QZTB52460799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d676db36e28627308f8170eaee3d63577c26cffbce5a478b8d89327c9c0ca4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB92419974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd3bc0707bb30da767a5da0914a4a0d76ca42132c573fb493e99359d012d625. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZWFR2473025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c34694f0aa5de3e2a495dbeae2fbde0bd62442558eae8f6250edf8d5756b490. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:55Z), 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/QZWFS2497731.
there's a hole in my heart that won't go away
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bf67dae86e8a6ea939577d7c151fdcbaa90ecadbd08fa84182b958c7809b29. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPEW2525579.