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 0x81f33394a0076205f1634a72680f5d7371440ba7cf97ed31a69db8dd6fb0b53c. 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/1e1503f8-bcd4-4a74-8b84-f7d96639466b.json and https://artists.proofprofile.net/proofs/artist/1e1503f8-bcd4-4a74-8b84-f7d96639466b.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 0xd5875d66ad410e5f574fd896f3b1e2be09c7dece922424f0fdbba46c69db20b7. 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/GRUM71800816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21fd1a3a01417d2445a3ddb60fc72d1bf3b7cfbb44e472a14b2fc48913f402a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:43Z), 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/GRUM71800821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda432149a7ddb7c31fd5d4ddb4701424ae8eee5f5756203fc6a8123303304e20. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GRUM71800826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aed455462c3b902100471fb648ef6f1093fe0c2aaf4ac2fd3917a5feee06e46. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:43:46Z), 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/GRUM71900674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf72143f087bb5192cb823f37b5b8cdcaf6bac3a194c57abdebd1a5ef2160493. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRPA12100233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8d646e46b8c7dc5cc47badf7f20fc4cd89ccb0ee5525363228b054a80a8601. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GRPA12200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa661894ac109dfefcfaf2fe098e506c2fae0b5aeda86a09a29228cd1be82699f. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GRPA12200327.
Nocturne 2023 (Cover by Thanassis Vassilopoulos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd770e91597211925b638dd90809880833b665cba7ac8315de9564fc67b2a64a5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:55:52Z), 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/GRPA12300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a67db9da29ddb95268c203c8daa194235aa84a1bf03e01b63c0be26b6044046. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRPA12300719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064e261e996f4e897321a38d32c031c0975433f5a89680de3af593aa7d063249. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GRPA12200219.
Buddha Bar Summer Vibes (by Ravin & Charles Schillings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064e261e996f4e897321a38d32c031c0975433f5a89680de3af593aa7d063249. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GRPA12200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c65b367b33294a317e8ca375e9bb4a0e7613c138d873f0cbd3e563c7e2ea1ad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR59R2310862.