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 0x17d9e745717c4da71332c41ae7bcb7985e4c1bdc7cdcf48255554240825f3346. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7ab6977-45e3-4c17-a6dd-7f283e275486.json and https://artists.proofprofile.net/proofs/artist/e7ab6977-45e3-4c17-a6dd-7f283e275486.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 0x305b8ca67fabb2a4b72e2ac40742ef1ec9b39c7170f429f40abc7a25135f291f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITJ870804232.
Canzoni di Natale Italiane (I classici per le feste)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb27910894fe5912f5f4126024353eeac4d4db9a153aeecab0c90c83a3f7a2e6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR6V81032925.
A Tribute To Napoli & L'orchestra Italiana
Whitney Houston, Vol. 2 - Backing Tracks
The Best of Vasco Rossi: Tribute to Vasco Rossi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674c0bb47f66c2b4a45b04c40ed13e2af6b1db5a336bde53ceea5888f0d34947. 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/ITJ870804217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10edf67c58aa41da640cc66c1598ec7ebd1891766e0d7ae9330ba1f7bda49b65. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/ITJ870804218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b77f3aacf8bc18208196af942057bfff07967731a7b1272400ad37c16bde4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ITJ870804220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb405f4530bae9818aec30cc1f2681ed23e22f5cf43e6c7bb5133f4628dbfce3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ITJ870804221.
Tribute to the Best of Queen: We Will Rock You
Tribute to the Best of Pink Floyd: Brain Damage
Tribute to the Best of Robbie Williams: Something Stupid
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1f241e85d73a1b4e7f05009ad5d1d4d0c3e58662bbe097806cc25b6e244a7. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:05:01Z), 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/ITJ871001478.
Tribute to the Best of Michael Jackson: Bad
Tribute to the Best of U2: Beautiful Day
Disco 80's (The Best of 80's Cover Versions)