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 0xdcad84bc884cd536c5d4c826ec6112d6e3e1c7d29a4fb902338f2e7785b8bbb9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33493631-0fe2-4695-ab74-d9114e80d41b.json and https://artists.proofprofile.net/proofs/artist/33493631-0fe2-4695-ab74-d9114e80d41b.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 0xc16df165fdbb23bf31737f9e513ba7ed18d385ce03119b03e7df0fceab96991f. 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/GBPFW1100630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a259c40a7da9511305e7edddc8e15dd5d43bcee3d5dbd1960dcbb53cf7acef1. 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/GBPFW1100638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3519821405a0b49288c1c44bab98b00572ebf7d443734c0245b60e7ad75d4246. 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/GBPFW1100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3732c282c1502f9678a2bbad045ce3505212f0a549bf165e47d3ec8e2b46f16b. 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/GBPFW2100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2288efb71d474b5ac403641c6711ab7e2ff37e2c25a3c4414d0e985016512593. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBPFW1100642.
Traditional / Arr. Pluhar: A la fiera de Mast’Andrè. Tarentella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf18eb9f056f800f02d9e07734a5e6d1ca7d5d4bd00c5d6a0fbd178fe818eb70. 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/GBPFW2100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e44ff819d94c6cc7513d49235ac398dc594d6dd72929edf091072674bb01801. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBPFW2100138.
Caresana / Arr. Pluhar: Serenata: La Pastorale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25d2dcf605b4cfa16036ddc13d0c84dec07243f5963786691c86467b22a1010. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBPFW2100152.
Caresana / Arr. Pluhar: La Veglia: Una dama, la più fortunata - Ballo detto la Barerra - Non è vero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab0d68c9cb9c27803a1c8561e54ef826eedc9623ac2fba91ad6c38efb516628. 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/GBPFW2100146.
Traditional / Arr. Pluhar: Fenesta che lucive. Lamento funebre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e50def8c96c69d4a14a4e96e6439188136ef269cb33a44c691b5a5ee358fe9. 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/GBPFW2100156.
Alla Napoletana - Falvo: Dicitencello vuje!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e44ff819d94c6cc7513d49235ac398dc594d6dd72929edf091072674bb01801. 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/GBPFW2100138.
Alla Napoletana - Caresana / Arr. Pluhar: La Tarantella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3732c282c1502f9678a2bbad045ce3505212f0a549bf165e47d3ec8e2b46f16b. 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/GBPFW2100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5f4a840bc93ecccb1aa10085c4272d37d71ddcbb8df39ec0279f8b67055d76. 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/GBPFW2400005.
Traditional: La canzone di Cecilia (Arr. Pluhar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a348ede9d0969d62ba0ebc766368fca6666f562fc01122a4cebb7f9fe1619b8. 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/GBPFW2400007.
Traditional: Jácara. "No hay que decirle el primor"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55666e8f4a049f3d80ecea06c9ea9746414c0e515c6deebd8e1a02ddf161d337. 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/GBPFW2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf29226b2f04953a6eeaadeb487253437f7d698606102b7e963cdd5d8e1058b. 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/GBPFW1100640.
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 0x11261def6cfbb03c8d94f8302a98d8a14738c0e72336a96a5488b518cfb72b78. 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/GBPFW2100141.
Caresana / Arr. Pluhar: La Veglia: Gioca al ombre il mio bel sole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfc1a8c837c81daa0fec9f7e46645fdf7c09c540122327ad34f78fbcbf6aac2. 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/GBPFW2100150.