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 0x974947599e7fae0dfcd818eced6ff096b0d8ce2804d1db49b7adb9f8781f00cd. 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/79eb2916-2eb0-4626-9a99-22318dada501.json and https://artists.proofprofile.net/proofs/artist/79eb2916-2eb0-4626-9a99-22318dada501.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 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 0xc8b306187e2b7c420794edabf887a77f9d5a5936386ee70445729fd061966233. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/ITL771502035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa95e14bd7bc6c31a9b5ac604916b1cc4c2469a59c424809ebd947b17395c43b. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/ITL771502040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262a60d7c24d63ef94425953d2b2814b7868223ae00893e543744472bfddb35a. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/ITL771502041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dccec81ab7b1ad081ed3f407a1b4dc458e828fb639f7f08f096726f67dcc65. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITL771502042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c5c930ce2eb87c2d0cbb9d139e6b83b806a7a67cb8ed1981624c70f67d5a00. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/ITL771502044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d0b855910c2b3bf3900f42f10606333d6bf4bb2c7517eeb59c1707a2a75afe. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/ITCV31705804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf64903b5c7bd04c312f96602efeacc1dc9b56d97b232ce0c21331c08772e26b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITCV31705805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe53eda9c6ffff3085fc562540117f761417977995f645ac099a599df173c4d5. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/ITCV31705808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef4c4f1efa8fe7101373527276a9d1231c166649e2ce90bfdc833da8db77101. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/ITCV31705809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e32dec7f993501919d1e352a3db6d9f9fd53de339b0220a21e52b6c0bcaf997. 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/ITCV32008006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2121f29209509c9c7fc6c6d45c79a1aa462127e0d758d8e141777b29355e57. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/ITCV32008007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35bcc5eb2a87bba3ac9e81e67d49893f77ace50a46a392b3f50f1ca077fbd54. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ITCV32008008.
Strappati Lungo i Bordi (Music from the Original TV Series “Strappare lungo i bordi”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2884a1d394dbb15e195a113450d078dfad3e3df6682b244342d02bbd5c042257. 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/ITCV32109202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e25e24f25b31bcb1ffdf0fbd55d33e927b0cf41e2788aee8fb5d76f04467ae. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ITCV32109203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817e1ceb0d6089c2e24745e8b0a8fff733d4ce7c3fb10806aafc8de5cecaea1b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/ITCV32109205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823b3ab1611d6505c5272d94d39e81a2ab36f3883fba07a829de76502ae9ead1. 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/ITCV32109207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc234590a2be0ad8249f7cdacb2adff958aa65b30ed02482ac26d28310b67c415. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ITCV32109208.
Strappati Lungo i Bordi - Karaoke Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832bde198b15ba5587cc54eac532ba20f9b2b612bda57f3b2fca7c348c9a205a. 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/ITCV32109211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdcda92200bd161f030eae34fce93713ef301037aad4cf4eb992c9180bfb942. 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/ITCV32310609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068259d98475da6b1317995370f5111f57d2529e1afa1bdd86328dcd7833692a. 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/ITCV32310603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852378c19fb4da74d120ac67a90496a81bbd6df12c92b69bd9f23a601b3b4fe7. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ITCV32310604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b7f9d3ccbefea7cf8c148f1922441b09723a2b28d2aa69dddbd3ff4230489b. 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/ITCV32310607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8ed7db17c3ec19577dea0d9d7a6c318421f559a552fa5a87fd01631e204a82. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ITCV32310608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4881d5d87cf009d1a0fa72691e28fbbcb25aa178d2d076154427df252d6cae. 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/ITCV32310612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd3da55892adbd441e91954df64225b2d02f4e920325f4cb81c0e61c855df35. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/ITCV32310613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2987c97e856a0081e033395adbf1406ebf216d07c4a71766bf0f02f33214ca15. 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/ITCV32310616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcb74e87cc52aa9a3cd4e8ca017cdd08e44ab52c51ef3dfcce7e65b392ea5bf. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ITCV32310618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe11cdeb058bee7cd92e945ec21454cece8499bb7a6332698b9b25f7b5561bd5. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/ITCV32310619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae98bc2dd81e83d19ad82492264cee83da5b9531b1afac6d022b41e657c12b5. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ITCV32310622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf417077b2652509b66b32e5c3efcacab01e8857b753e6c3637fcabc59b530d26. 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/ITH712500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7ad5fb5c82c62e12bf66d8e0c55195913d3ca0026b3f7ef219c787d1b9ff9e. 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/ITCV32109403.