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 0xbc8d79758a63a1716855dc310e0a6c78713e8d4dcc53c12e3679d84d2db36109. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5be08e3-8494-45d3-8d48-de2e0f2050aa.json and https://artists.proofprofile.net/proofs/artist/f5be08e3-8494-45d3-8d48-de2e0f2050aa.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 0x795d9b4edecd0d3a9c21b3c3e260af8ef9490fa2e6e6b2098122308fb7845c9f. 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/QM24S2100405.
L.O.V.E. (feat. EARTHGANG, Jon Batiste & Sherwyn) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ef393af7df8f9435ce8f7985cca83559691bdca77c02d4ffa97f999e7b9cd3. 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/QM24S2203338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1108163871799c2c5b0f4555fb6ceee901f3883cc6dac9f98f60102ca9a99d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:49:06Z), 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/QM24S2203334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23576f086c3707a47f2b7e27658a32bd59aef295a41aa87de9001296c123f1aa. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM24S2203336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2eb0cd618c1441116387e0072801b82937e56364dfe9be912fcd99068cb116. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QM24S2305288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6c97e92de7938b7c14fb8b3af83abedbec9c8fdd843f0fcbfa2814845626ca. 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/QM24S2401968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2eb0cd618c1441116387e0072801b82937e56364dfe9be912fcd99068cb116. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:14Z), 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/QM24S2305288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f0e97af24ee5130000b6c0a678a7baeebec521f1e500e16c58d1e008ccc04. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:22:13Z), 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/QM24S2403218.