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 0x29bae4b9b8cdb4b38c329bbf58fa426029e7aa09476e5acae6562c481e83d6e3. 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/b90b7004-7b6b-4b68-9c6b-6f94e7d9ba8a.json and https://artists.proofprofile.net/proofs/artist/b90b7004-7b6b-4b68-9c6b-6f94e7d9ba8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Amore lo-fi (feat. Nicola Siciliano & Madame)
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 0xecacf16c2a2fd5473315e34314dfe8e8b558657759a32ec61652085a732a39f4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITB002200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cadf56b5f3a3b4fb554b8af58449f6077f810530996cd6a39a0d85484929b41. 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/ITB002200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc686b2fcbe09298e69c64838f2348f9c34147691484c938301667d2d2fc43d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITB002200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716fdcf458797971c884a1fe84dd923258b62af78f02bf7640c24e9a64ae6688. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZJL41900347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db79e084fb53abb57c87ead9dc4c49c382dbbddfee58af55b2faf5fcaa80479. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITMF12300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7bec9d0439e71e13d5e72551a7738506d33a9ae630d31ddd45d46e024dddc9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITMF12300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1ecb2f3870aa48f0687fd625199383036d5a0e626b6def8fdbae8b8ef9cf4d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITMF12300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1ecb2f3870aa48f0687fd625199383036d5a0e626b6def8fdbae8b8ef9cf4d. 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/ITMF12300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db5f404bbdb06a40b9c5155abf0856bfb60b201dad2d83efc8828c0273823f4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITMF12300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2074f78d571860bbe3b40d30743142aa19e5fe33375ea6b3581dafbd3e59870. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN82390116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e963eda18d0c3404b99ebe8f796249102f151377bfecdb43643206574a37f4. 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/SE6QE2424583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed587b679e1c126a40da90ab7f43d8e886fc797694cb806333fb5850b2ca78d1. 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/SE6SA2457609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed587b679e1c126a40da90ab7f43d8e886fc797694cb806333fb5850b2ca78d1. 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/SE6SA2457609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e963eda18d0c3404b99ebe8f796249102f151377bfecdb43643206574a37f4. 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/SE6QE2424583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e963eda18d0c3404b99ebe8f796249102f151377bfecdb43643206574a37f4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:43:34Z), 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/SE6QE2424583.