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 0x9b76273ea5fae5dda9f236bcd18898b11dd4875ab2ea45440274c5ec05205c6d. 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/7b9a3c29-a702-42cd-a734-e26f10586680.json and https://artists.proofprofile.net/proofs/artist/7b9a3c29-a702-42cd-a734-e26f10586680.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 0xf489dd86d957014106f1fe1b4a68492a40b10292d518ddad936b445cd7727743. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V81159546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1061743fb66617d698e96bcf0799cd7fbd1d781b8ff1d7797d865c24420c75c. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/FR6V81159548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dd40fe8182b3a461cdedc9ed9dba3619a92f838089f179c977a388faf81fb4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR6V81159549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2710ccbdbde7e444f9cb356672ec1eadd42d4bb721614ca13d2c259ad6a66836. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/FR6V81159550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c34727159a1f69634afc3c8ad53e8a2d7d2f22451ef78048d1e012709bead04. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FR6V81159559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328e60db52762fc62aabddf666d6d289ae0bfef3f785e9a2362c8a96fd082013. 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/FR6V81159567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37798d95064b0bf741f3626acafe0a13c3c1af02be32eeb063bb7efd7f9318ce. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR6V81168222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89afe596932aa91b3c46f6c00d3b3075eede05825fcb5e579bda01bf43e272dd. 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/FR6V81168226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7b5315b57d2268c602af016be6deea52ffc33dfac149d7283f4518e76dd3c6. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR6V81168227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5f15a62b380320197f23385715c35571047ac06bf1b6949ce52baa1c5fbee5. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/FR6V81168229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee0610a2f47c7d6391a57c80c822c9925b2627da3e13a111530b23402e46ad0. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/FR6V81159569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95129298ab11f825acb37bad1b6b18ffa2ebafe28add0b94ecd6bf35a58c1513. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR6V81159571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7419ee687f2e1e680804d20c656932105c44562493f228bdc5057cda9377af0b. 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/FR6V81159572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4945bb0cb2bb8d83fdee071bd4ea558d565d087fd14e9b5d3c6a48997e776c. 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/FR6V80339690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e258e716e53198d2311af9f2e87fa30674ac988966c745e515813548ccdf43. 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/FR6V80339695.
Avrei voluto cantarle io... (Best Classic Neapolitan Songs)
Un secolo di canzoni con Franco Moreno in frack (Best Classic Neapolitan Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c474908ff5f48617e856783dfe7c83d99cf50dedd72f21253686945a166f2c7. 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/FR6V80339663.
Anni sessanta canzoni d'amore (Best Italian Classic Songs of the Sixties)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a30e25259dfdccc279c4476d27810afac2d919f76cb91381945737d0393d21f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/FR6V81159595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0fab711cdee686e6a9518802fc0a2f9de0bec3f8912698dabf0f12364bd485. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FR6V81159604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac64cecf5ff5b4444d67d2e2b383da26ef3c4958e6b1e3e7734f4bd99c1c6c5a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR6V81159605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87746684ffa0cf3e41c17b1d795d12b087355e34d219b98a69a182b171b667b. 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/FR6V81159610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce3f7363667afc16771d5c6a319adfe09a740af7d75b15f6324a657e160b108. 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/FR6V81159612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb254facdb9c7ece16da685ac75eec02a81a2acf147e80fc4d485685b3b976183. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/FR6V80049314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63af550df9ee3cba6557c67c43d3495fc8f27ba994943f1cc7ed9fea311b9b48. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRX871525243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132df13d525e63e58aa30ab07103c1a815e5bf50a08ae38b7315d0bdb0f6ea5d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FRX871593085.
Due in uno: Franco Moreno & Franco Ricciardi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba604c4052d977a05f5b62977391c75aea0bd8e920409c019c554484b64a923. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR6V80339464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4aaf1f0ae4adcffb82c00fcb30b58369e0d97ddfd32f7f65fa35a37b27ef17. 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/FR6V81845258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded2d07d24aeeb947b643b989522f0f001608d6a68c1e031f5508c07a481b0c8. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ITH471811310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1570f4f77540b1e31cdbd26329133a2060812ff762bd44a33e537e1d0b8610d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ITR632402681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe7b8d7463125e5bf1c21426704b7bd3d8e7e1c2fdc1d667295ffc710709055. 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/ITR632502022.