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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9323dfa66ebde49d164e98f670158c930c4f934546ab522d7d462546465b05d7. 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/781e4982-958b-4af3-a0a3-f1ce68b91528.json and https://artists.proofprofile.net/proofs/artist/781e4982-958b-4af3-a0a3-f1ce68b91528.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Brothers Mourn (From "The Godfather II") - Piano
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303bb596faf86c37e6b465a839f6237ed11a1c93a84bee004b5fb40436e01f5d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/AUGBT2490061.
The Godfathers at Home (From "The Godfather II") - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caf65637fa9f46d64124390a64da8a90738b13dc91358b6ea72d1866f64b0d9. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/AUGBT2490066.
Ninna Nanna a Michele (From "The Godfather II") - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebbb86995577c4f07f59d93b56a6c63f5f137e167ef6840557f584ccac7f3ae. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUGBT2490068.
Vamos a Bailar (From "Scarface") - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1eaa74f7ea725010708eabf8367cc6e8b2c661da9042b32b66ef042eafa86f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUGBT2490070.
The New Godfather (From "The Godfather") - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbf0fb06a4d00b0afe27b6c3c3d3f3fbf74239d5b22e415ad7b351a1d6f45b9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUGBT2490071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2e3a9e0affa664e8063d28316e49d0165e9afa09b34a0de3d3d18d7c31a994. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/AUGBT2490072.
I Have But One Heart (From "The Godfather") - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd499c3a6614cdfb7aef28e7373bf2bada2bfe88146d9a3e49b0004660dd4091. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUGBT2490078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618bbda7c34c32492f233800195455935d43729460ac530c545ac8007ab7c9f2. 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/AUGBT2490079.
Apollonia (From "The Godfather") - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562d7f640ab8bad5b360eb0cbc26db60a5c70e2a397b51d1282bae00b6b09cac. 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/AUGBT2490081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d36352a62ad143076cef227deaf495e541d657c084cca1312b4aaac91d07f6. 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/AUGBT2490082.
The Pickup (From "The Godfather") - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b9e61e70aab492f8080934195756c113304cb119ee55ef206f6cb5cb50cbce. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUGBT2490084.
The World Is Yours (From "Scarface") - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b1cc1d65af466082b0eb49ccd9b301a19fbcec499a97284e0c72c5c83173ae. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/AUGBT2490085.
A New Carpet (From "The Godfather II") - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5162bcf20b5243c4952d25ea53078da68952943bbcc3d91cbf989e1853c39e38. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/AUGBT2490086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfbd52c2bba6088449b55e359b50faee562646cc439e481978e461a622bda8b. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/AUGBT2490087.
Ness and His Family (From "The Untouchables“)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d46beb4a60b8b5e5805bd79cd83d9c805916793303537d4cca2b72dc867d563. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AUMEV2517770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b09076438d4b91b227b84794a7ce618e009cf8b9143c474ef54cdaafedb9518. 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/AUMEV2517783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8fa5d97a0e9fb7e6000aa2f8ae3109fbed1dc14e1236a120b03b9b22c9624f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUMEV2517785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fff6fa4c3409930af2747d1884eddbf21bf3dbd58740dd9458dd556477acabd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUMEV2517793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd93599ac276b4acec55e275cd4dd3f3bc0eade9800c51f9d220054e271c53dd. 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/AUMEV2517794.
The Untouchables (End Title) (From "The Untouchables“)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafeb3f8ae5e5a4a1f1e01d7634d9c92adc1c14fcde3ddbd777a7e33acf4c3c9. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/AUMEV2517795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00ff92c8105c7ca6f5c0b715de912397bbfbaabd3d9f6f13da22189c923271d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/AUMEV2517796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2392340c8b5f48707d2839f66477fcd79513d9caf86cd32816fe269e0e1142. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUMEV2517797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f675a8f4b341447b2c08b0e704c02216f5691fe07208bfe03d66e091f06120e. 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/AUMEV2517799.
Machine Gun Lullaby (From "The Untouchables“)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc39bc28f2a50f672dfecd2c58a1af8fb0edf0f41d6bab527c637e2c46165979. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/AUMEV2517801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb3924f79f2f6e71a24816f8753f18e494cd9e0fe518d472d8505d059409f1e. 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/AUMEV2517802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9fe00fd065ef6ce16a3879191e955e27b3f87b39e9da16b66d90794ef003ba. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/AUMEV2517817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384784b4354d53ca4fe682d96d2e497c485306180f3a3e44169ad3901a33f882. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUMEV2517824.