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 0x01c251bdd029ff25c9b24fafe8257f626ea86e6172591ca458646fe7054a64e2. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3201cb4e-2d2c-452e-a7ec-3b854299b42d.json and https://artists.proofprofile.net/proofs/artist/3201cb4e-2d2c-452e-a7ec-3b854299b42d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La forza dell’amore e dell’odio: "Vado a morir"
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 0xbb20a571f04922666d5e8ec3b0096b152e41fc62d01c6f1819409778b823bf80. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBF071400820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7900e6894479a346c891fb46af88e0cc78844621baa750b16a83c891b152f1e8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBF071400880.
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 0x36624a23975b179a65edbf13cc062130d5390af7f4b256f5799cfa71934e3c35. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBBA0941210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4e0269333a54a783ee18b988e49c622b8b966ff1a74e1df8e9137e19d808fd. 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/GBBBA0941330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40896e5f0a01904987c6cc6c6d42330bda825cd705e7c0090def05429d2fde19. 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/GBBBA0941220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcdcf3a239bac221ab3645b484964b33ffff2efadffe9751726d0c01eab1992. 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/GBBBA0941340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937f24b3698f13961dd434a9c5fe6749b6f837478ec0688621910054a363442c. 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/GBBBA0941230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8612fdc0bf41b1458b8bb7367f7bff8ac832a46bcd5ee4703abf6c729c58274. 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/GBBBA0941350.
Germanico in Germania: Parto ti lascio, o cara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e079a765699b2ca93a195aaebbc23eaf85d992e5fe3688664784dfca603b699. 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/GBBBA0941260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c51cb9872f904a7f0e46246eb1dbed6bb3a168bc8444ce921d3f49860c52e5. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBBBA0941240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230efedc91dc3e872e0831cdc98012c420dfbc1e27c00252321198414f17beaa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBBBA0941270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80640fe07480eb8a2caff511ff5d80180b0c9bde598c62bc355579c0c320e66. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBBBA0941290.
La Morte d'Abel: Quel buon pastor son io
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcde409387df68890bcc59922ab11bdbf37d09d77d6b9d7ab23be0965581957. 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/GBBBA0941320.
Suite in D Major, HWV 341: III. Menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4dfbb278d7cda0b81d0915c541cb4fb89b8d5c583f443f9213f3d5cf486bc3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DES381531005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd984c5057a79b6f0cb97cd47f978db285004151b3c7c552ac0c989e34b2ada40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DES381531006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe40b017eccadb54641bb23b9872ac7b99b79e8729b7d3654f73f0918fe318f7. 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/DES381531007.
Quintetto in D Major, TWV 44:1: II Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ddc59feb7c68013faeeed65193005c5f3f4fc23c03118ab22a409443388798. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DES381531012.
Virtù e amore: Sinfonie & Arias from the Late Baroque