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 0x28dbe416d4d31ee00e9e78e80372781421a111e5e1a9a58edaa43fc9024b75f6. 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/9b904394-70bd-4ab4-ad4b-f0b9fc90fd2d.json and https://artists.proofprofile.net/proofs/artist/9b904394-70bd-4ab4-ad4b-f0b9fc90fd2d.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 0xbf0979c2a7c26f4d13d3cac39bed3feca28b93beb134fb8efbd2e47b285dd5cd. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:42:17Z), 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/DEA421000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff350d04abbde90f2053e6d307382eb4968b62ffd05c94af84a3443f23b9d959. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:00:53Z), 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/DEH841500468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869e3bea7e23a33e66aac58a222e7df24f75a29ceb930ed9b86f6c87169df127. 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/DEH841500469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6dfc72dbb2e4902fed97578a1f09cf6121250098016833ee2694e8347c5472. 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/DEH841500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39464d7b70bad97b8dba0a8af27f865982cec5feda2ecde8ff484f1256caa2fd. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEH841500474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3527b537fb60da06a799f4abe62428bcdb9a7e0486687a4591eab764ab679542. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:43:03Z), 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/DEH841500475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b825e559872957e4f39705505d833596f07193f97be6246e5de4ed89fa254ae. 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/DECY91800670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f3071ce432f0069ed5ce9ebe898769be44231c81ed654b7c2d5f65cc0f8e6b. 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/DECY92300842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6349b7b53fcc227981097acf3f726ef6471c41ebcb623670eb349846019b906b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEP960900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1d43b413b57fb77b9a83fd473d32f947a72a1e371cc3c898a18fffa4645092. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ920400027.
Quiet Nights - Nicola Conte Out of the Cool Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26392ac3a9f7aa6e44ff525120f2a16ae9a3e71e1b4eface73b7af86893fed0a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ920200371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cefa1bd0f3c728813095be2de5381fb964b82cd6ee6cb52c53401123b24e33c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ920200317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26392ac3a9f7aa6e44ff525120f2a16ae9a3e71e1b4eface73b7af86893fed0a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEQ920200371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1d43b413b57fb77b9a83fd473d32f947a72a1e371cc3c898a18fffa4645092. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ920400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ebaf32f7badcc6ced05f2455b184afb9b27cdedff4feceab79b5f2bcc010c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEGQ12200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed87ca41f6132c8ebd32ae2f3ae7a120c05fb40be07f7ab39fdf8c978400ae0b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEGQ12100009.