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 0x88a26c1f21e9f3abac8560b2c08c487b3e7136ddcc54efcbe0c69b97e747994b. 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/5a54877b-7e98-4284-ae57-21f46bd4dfb8.json and https://artists.proofprofile.net/proofs/artist/5a54877b-7e98-4284-ae57-21f46bd4dfb8.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 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 0xf430a737771e1fa5dd64a70cc86664d6ad70319c93e25936c566b40070dff7ee. 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/QZES92288695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf671761e8dd5cd92c1cf4867502aa81f287329224e8627da1069fc604b7e490. 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/QZNWS2317492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ee2aaf6bf30f71be2b8251a8f88852f5c4426fdb146bd0b240b6751ac3e031. 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/QZPLR2112523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bbaadde5853cbdefc320423ca4eff3bb8154a7bb8aab0d33602fb6befe0a92. 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/QZDA62304355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d27894830348af5ae2e60a513bff78cc983a5ec2618c5dacdcbf57558748cc. 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/QZFYW2162284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ab1b2a02e796b0f6ee622d2660743c3e6e22d2e27a86959f83abcd74a3b57a. 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/QZDA52005337.
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 0xd1f7db56c81214eb859a13c61e782e98f56d25fc02ffd6dfb836814d52ac2e7b. 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/SE6QE2498719.
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 0x3bbd6c8a95e77f74bb2bad4bea714071f97b531cb247247ab0478ab2f08ec480. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE6SA2452128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9921fe20a2a19294ed5697fecd244f491852e4e3b46eb907293798fd3129ba. 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/SE6SA2465911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e60da409f8542c8b62277d861e1221c574efc70d3c4a284979e07b97c6ba472. 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/QZFZ62026387.
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 0xf1d1d6e26f6d45f62d7979c296e81b878ca29f538aa8635f385172e05dd41902. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/SE6I32460836.