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 0x334088ec13045b18e950e8b6a81d58dd6eac1c5bf735271b7080a302f98d5866. 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/a858b679-5f6a-47a5-88d8-aa4954937d61.json and https://artists.proofprofile.net/proofs/artist/a858b679-5f6a-47a5-88d8-aa4954937d61.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 0x740b920b06d87b78b057b30ffcbdb311179709402e6020cfb951456663ecb5d3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ITI021000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd805511638ebfb305c9e8fce721f053256b4d14c404468cb6b3fe30f02faf4b. 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/ITI021000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7143aa4872e33c209fb38f7642d9f20998c09c104cc9e8257955d05264c9ce36. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ITI021000145.
Italian Lounge, Vol. 2 (The Most Popular Italian Songs in a Chilly Sauce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a29ee5f656021f5a52df88da84de4f2c8b944c38a561ed63c5488fba6a89868. 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/ITI021000147.
50 Italian Standards (Le più belle canzoni italiane in versione chillout)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405d6e190c31cd2814777e5b5b5d34391a8c6c8b2c0b4dde6e3f1906d9a6cc8c. 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/ITI021000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81253bc71226bd5a227942519a12f4576fae48cb2488948ea2695a6ed772844f. 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/ITI021000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00c89c5b862928236d6467eb4dcb8dc85eede14ba58cc44fb7c369388d1e012. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ITI021000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa81420621b5699572ba539450aeec0782bb0ee96db697571bc7d77c69992048. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ITI021000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81253bc71226bd5a227942519a12f4576fae48cb2488948ea2695a6ed772844f. 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/ITI021000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740b920b06d87b78b057b30ffcbdb311179709402e6020cfb951456663ecb5d3. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/ITI021000138.
Il caffè italiano: Bologna (Italian Lounge Espresso Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405d6e190c31cd2814777e5b5b5d34391a8c6c8b2c0b4dde6e3f1906d9a6cc8c. 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/ITI021000140.
Italian Lounge, Vol. 3 (The Most Popular Italian Songs in a Chilly Sauce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740b920b06d87b78b057b30ffcbdb311179709402e6020cfb951456663ecb5d3. 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/ITI021000138.
Italian Lounge, Vol. 4 (Beautiful Italian Songs in a Chilly Sauce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa81420621b5699572ba539450aeec0782bb0ee96db697571bc7d77c69992048. 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/ITI021000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7143aa4872e33c209fb38f7642d9f20998c09c104cc9e8257955d05264c9ce36. 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/ITI021000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de91ea0781509b67ddb98a3f8818449908187a4da8bc99319ad87b9b3229089. 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/ITI020800178.
Le canzoni italiane più belle per le feste, Vol. 1