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 0x59f539aca9b2c98d8c5f37d01dfa5b961306f57b0465e3669329fef668cf5e45. 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/8ecfcd49-f443-4ae5-a2b1-fd5677c0ed60.json and https://artists.proofprofile.net/proofs/artist/8ecfcd49-f443-4ae5-a2b1-fd5677c0ed60.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 0x3798038cb1ae3a3f39cdc53662dd82060f500814aa67db1cbfed1266bf982f27. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USLZJ1780758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8b243295af5efe1b88715829c780da622286a46b910c570adb56458ee5705e. 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/QM42K1846649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2c09c51ad9a4ac6e84ff338c755e07b0c47e57c73a3b4b6169e94b0f11d112. 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/QM42K1821834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa710cb7eb902af98e756f85e7a32534bb8fe437e8bd71f2efa7caef1e8c19eb0. 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/QM42K1863621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2c21166f84fbd7ebe7df7188b1e217bc220bc538d7fd2f31883d37f9ea14b8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM42K1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4090693270b936bf5775d23f0e825f9192c5d0ce6b3459405172d59545b95c1c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZKDK2136058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcaf5bee952cc3712f91a39750a45739fa7485361089a722e56826b7b443b27b. 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/QZNWZ2044817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a2103b4305777e32408e0b50bd03648cbb6c58fb240a7c63296eb5244bc1b6. 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/QZNWZ2044818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a42a7b0c3366b7caa45b5215881d47c60c1847af4cc7c6f9ed3b1fe4b053f6b. 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/QZNWZ2044819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf426f7ac3f8a977cb8b2598e011d4bf0952ec356879bf696306fd9e21ed511f4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNWZ2044820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc643b7560c38aea7f87e705215f12a7f6146ea0183f531360ebd7cde54b1b. 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/QZNWZ2044822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8f4727da6080f5e967e62a1ee391114f2c148637065971768ac4cd74d60e7c. 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/QZES92264942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75fdc1620bfcc3d0128edd868d5d710a82817ced5cc9ffc4994cf781c3b1761. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZES92264943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf129658701d16d7140dd8ce03a487385369ffabd54fbdf286d8f85585674d4f1. 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/QZES92264946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8414acd5ccf978a06606c26373db704a1bcf0aebbaa15fea032346b099b68ec9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES92264947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b81ab2f52135f4af542402541f2b61198976deef0b1ba69add21146a32cf3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZES92264948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe157fbd3fa0f1b270c566cd67d4168a7c698edd8c6af5d39118e3bde670e70b2. 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/QZES92264949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64f6096e1cca0c765295234d8a690c30ae973fd8d51aebb0e99ed777e8c4e32. 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/QZK6K2285007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd300ad9a38c479f1c24658d4c7625917f20142ca31e77bb786857dc4199ce7. 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/QZHN92387211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6aa2244f3704807282116310b66c04f69de3d28af1ea05111c8c1b6dc1a71fd. 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/QZHN92387212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8321ae509e6e556ff27250b0c850510aabcce12b5dd2e1c1288a32a52894e466. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZHN92387213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4179de397d572e9dac978dea33f030e87a291ea573556085ed25bcf47651cf5. 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/QZHN92387214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40a368c170456d60a517a2da67a1611f7f9491268b1f46e98e1e65145400b0a. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZHN92387215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb9c4a35d7c0945ed51717b2e8020c3f3ed1dc8bc8da1a58de9e86dc7f537c8. 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/QZHN92387216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a4fb4e8979e8595ad71197539346ac19963d59c0d69f73191484891228e570. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZHN92387217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436811eb41634a6752952affb4b2de556b4e1c6caf3dd4d90048521c5057fe1b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHN92387218.
Danza Della Rinascita (Animation Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78e4bfc9b609349cca757a5cd802ffbe38989a849f9dbaa26c8c874b16ae877. 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/QZTBE2577292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6eca9cf9ee6ead075f3d82da81435e0b65dae1b35114e18fbb6bdd66c5282b. 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/QZS662424958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153c058e61114e6468551bbffc6ecdbdfc72b0bc6b6c1f4423cee8fc9a0cf582. 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/CAHQJ1991701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab76567f43cbaaf0629ef153c391b2128f6a72c09a71baa3cca676be0b50bfa6. 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/TCJPR2201072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4066a0d72d7f14ce46fa6238e3188fc279e5d088b0a3f23168943ae9e426eb21. 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/TCJPV2317231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b58c7fd264e1350b3ea8a7bcdd6308ee8417192b56df1f7d3510e2da043a680. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPE562107370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a967734d5153451546aac6af373abe4ffa923e15d34dab57173a8670b128a68. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CAENV1975502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6452ae0f1b31fa5196cc2a884beba0ba16bf680b837cdf74803564f17d4a4db5. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZS662462297.