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 0xd0e200f1aca5212fa93c900c5bc389b5c36a324c4bf0e9b6fee9617c41126e30. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9911aa26-6a56-4449-af17-f002e43feb22.json and https://artists.proofprofile.net/proofs/artist/9911aa26-6a56-4449-af17-f002e43feb22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il Cuore e la Fame (DIECI - Ten Year Anniversary)
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 0xc4fda6acaf110b2bd4ee2c77f289b3040c33dd3ce757af1efdb6ca77664666da. 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/ITOGB2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c9eef13264be4d75a6b7ed5034c8b3187811a15af5185b7d5db22b868a01e2. 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/ITOGB2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa751412325bf3ae6c9f1ad3ef2ca5a5e4568b00ca8b2033e848adb33b295e1bc. 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/ITOGB2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d3a15debd763be4807d21add97e91e87bd700b9f390e7dc013f6a34367373a. 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/ITQ181500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebf7abaa8e2bbc29b73074124a56aedda64d2874e2c2b0c839faa8c239c470f. 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/ITQ181500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75d70eebdc73e905ef155908f7736edeb6c842786e10932c6d2bc9953fb0978. 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/ITQ181500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f9c3adbb320eb155aba3d5f1941c0144bd7c5caeb15294231a657e0935d89c. 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/ITQ181500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef274f21e337d58b69824e01a644e90d97359eeb003de240187691457d9aae6. 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/ITQ181500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5219857a2dba7eaa29628facb5b52d9d741dbf40f3a447b318a07f486f46f14. 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/ITQ181500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8f9f5d5b15c234f025aa6fd6062f4a39c4848708b28acbef75822241388ef7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IT5FS2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2d8c230b6d44ae13d31ee437784b86f1f50d00856289880b995b4d4d3745ec. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/IT5FS2300010.
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 0x61fd92bf2e88665fb4e16ae813e64b9532ba25fb6d60bdf32e3321397a1468ad. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/IT5FS2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639c543fd250f446a0182f1f9b450041f623fdb813db0e24389cc894ea4d93e2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/IT5FS2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017471c3de7315906976672de10edea076b82fc225667c6876c8669b239c40ef. 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/IT5FS2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500d116a3123ca2e8db6c40034ac5b2f6710b5fd7f755137e5223dcace52a587. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/IT5FS2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0708957f1f35a128728b205f29d98419d73637008e31d3a5e32d4266d68970a4. 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/ITPXB2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3a71da9c34e3567eef08fed29f29adf8c51444ef79a4f51245848e7c4a724b. 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/IT5FS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd13729dbe4eb788b0c3bd51fad89c507766d47641e54ef40073069a2b7c06c. 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/IT5FS2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ca573860cc8ce971f6f95501e63137a4266360219bbe2f586377f3cd32cad. 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/IT5FS2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815ecb2026bd8060fc6c4ed0cbbba143a451dbd711233967a2b146ef07d7869b. 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/IT5FS2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43689580c88a2f765c0a12852439294a40318a1ebf0ca365e0d893e1a8d8bc5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/IT5FS2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9956d0a5fbbc89db1a348d6516469b7ab2b0dd7ea800506aed0c081ebd75063. 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/FRX452421186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c0a9d838700f98a6da6c5f26eb08b1f42e64091eb2271847b3745a45bcae57. 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/FRX452421187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3244384558c77b89d5c948caf3f0f57c513c7f1d214e441c8607e8a9cd014c1c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX202463245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddf7207ca011cf8abb95420247038123f58a7ecec54660b80ffada6bb17488c. 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/FRX452421190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f1aea06b57507fd3265611844950bccf6f31b616ba06fe4cb3ea37bc623e07. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX452421192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad5f2de77a1651ba4283d1871307bf783edb6b8b853d3b52ca9d845a03632d9. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FRX452421191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e744b9dddc2cd3f98925f60711202b4c8514b79d0d719881ca1125cf1856d3f. 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/QZDA52315511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cf80f7fe55bfedf9678cf396cb3d2e3f048c0b244788103385eeb4a8a38dfe. 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/QZDA52315513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fb48dd8eb39f3ac0320765419a2f44b8f650fc63044ba08c4e4a6824b1b506. 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/QZDA52315514.