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 0xb1d1247d6a197eeddc7278951cc1514b509a5fdf7e7fa79095ced5babe515e5e. 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/6db8b4bb-c7d2-4cd0-916a-cbd11788e363.json and https://artists.proofprofile.net/proofs/artist/6db8b4bb-c7d2-4cd0-916a-cbd11788e363.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 0xc46728e63c119ca6a9666bc350a644b52df33b3b00929bc99bf9da3cd890f8e5. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:42:17Z), 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/ITH521311196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe937eee66485372db6df1059b5607fa68892b5abc7da5507b583eba14192b3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ITH521311197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80838b66cdb796ecb1917846844922f46970d41fc8cb4b72a8d936964f3e7941. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITH521311200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f30078f1d86321f62a170dcc3154110ee4f41ef6785b777858751b67a403f1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITH521600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd622ff0253947d2c2448822b01973eeee0440d5f367ed1381a49c70beaadfe9c. 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/ITH521600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4b156b6161b08147314d15f860ffe2affa2a4037c9ceb4c82db6fd97c35491. 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/ITH521600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a34061a772e2e895b366df8852ee54bbb7fd0af81dffa03457e57a83e442f8. 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/ITH521600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df1bc456cb5c6e98e3df2f079e6ed98c490f6756a0015c4c01dd47af8f8054e. 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/ITH521600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe796ce79c64cdab6416bb0aaf82990345ac5d43a36d9b5666a5aa83b6c314c5. 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/ITH521600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eabd13225bb127577c48230fcf95a9f26b6d993fedbf4570e65afda12880c50. 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/ITH521600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810f90726c5306f852a96ae4989aa43ad804abbacf0e0016a89f23048e1f16a1. 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/ITH521600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea5009d0206c61cdd0ff6436c6912bc68db6b2a3bcb5ae51d39eee3d668b349. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ITH521600013.
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 0xe09f78ecc7b8e76f1e0a815b40a97fe6ad3f56b0c71282fb7684ac822da94914. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITH521600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218b031b019104365061a704069ad192740f7214e5a68a032c4f3d0779779cef. 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/ITQD02015601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213222af6492a73ca93ecf0eb35376a67652eae2cde1839a13fde227cd9857ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITH502223001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bcd85be4f36cd36309f9aa1bc35dcafb57d95727981cf39c2b60a9ee08690a. 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/ITH502223003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c8a30887dfcfb70829fc1c54fb3f29d10074525f230765171950e8efdca42c. 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/ITH502223004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363808e45269565c769c6863ec7e5edf452b5ef3a24a9cc5f5bfc9cf3fe2ff60. 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/ITH502223006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9af86b78aea3543164e3323fa030a3a0288a35b3ccef95a803c74ab01d3fa59. 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/ITH502223007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad3861e427be2704deb466120b89bf780bc28246acd17b0e353f7798b77fb67. 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/ITH502223008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf300317b4da15a7dc02159b9825c62be63757ee90a4da60c389e2bb8142f78e2. 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/ITH502223009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400baae22b07103a1d908c7f80b4f7a635684d0f0eb0090250888ca6a22d664d. 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/ITH502223010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99279f13743e344b17048c565ebace0456e0d7b8c8a243a55c3de16a02547462. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ITH502223002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34f1f056ee04a238756fa3942ba15d6c78c967dc9aa48a14916b620b062217. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ITH502223005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb93b116ba6f6da0655a1180f55fcc6be99dc121fbdf20fbf41856e690f796e. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ITH502223011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ad4257aa78674048144024f594eb3e4fe2736e64fe6f34595e9c7cfcc29396. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/ITH502223012.
Francesco Di Bella & Ballads Cafè (Remastered 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5fb45ac7a5b4390c8782463b49d3cc7b155129b608eed4f501305cb3eb03d9. 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/IT3RS2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a680f7dd33c3e49b11ea5daf8d63a7bb59770445717805c2620a256503e1e67. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ITCTT2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84240d3e7449d4d20665e27a3e08f8196117a6e383cbd9a802a69c847d6fd081. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/ITCTT2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53fb3c0989ae9b7b8fc9d2d8abeb4f17ebf60fe9c5cccfff800f2b82d4de656. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITCTT2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f74ad5bc11db450f16aada5639e701448262344d22f8df6faa3a2c156fb940. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITCTT2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ae6f535e49dff6b3482b5c265a8561432d232758a6dd36d60e474a422aa67c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ITCTT2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68dcece2cd6dac730b2cb96161e78ff95e3b944bf806695dcbd4a39f09af82e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITL751400214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf0a745db478733d4f067dcb60d2d4d8c85925cf3b199784050c13fd04b970a. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/ITQ922300745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689474986a099643620441ea26b6c436bb36b63db96ed668c06b263fe02f3195. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ITZ590806407.