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 0xea76b3d6b7fe9110f434a5cfebfc1b812124beb2e3824486e8ceb5ae0e69f322. 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/01e7a783-e18b-4f55-b759-91629f2468ed.json and https://artists.proofprofile.net/proofs/artist/01e7a783-e18b-4f55-b759-91629f2468ed.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 0x46bc0e144795c9d55e6bdb530254bb482f9dd3706ec6edb0c4b0c7113e114a0b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITH529710732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74de2286b637355563735dea7c39760c4dc861a821b7571c1339a17e0ff66fc7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITH529710731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070bb923b171275e06ad359c37630fec74d3337ecb514db52b884ce5ce29ea73. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ITH529710729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dc2b6de58349f51b797a714e087d778a5a3ce59bd8fbcdabc25f56bd0d3639. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ITH520110820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329f2a04da330072a20ac8f1dd52e4afd5344db39994d320eb118fb6ffc7a597. 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/ITH520110818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e437b207f0213d3b6a1ec66a5fd1631357fde72e62fa67e69fbbac949ce9a7. 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/ITH520110816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3dd0c2c85dbbe2c7b360d6f69ce08b57ba68820d161e22167680648e903761. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ITH520110815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490f22a151a6cbf78ebded063063191b3e6cc2fd23c15014d94ed065d0598e41. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITH520110813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57420aad4bce969fafc32da044f32eea613967086503231826d40f4eef8baa9d. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ITH520310876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18416a7239dd9353c3568fead2ec4ba16087a39751dd15a618fc7243b746f848. 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/ITH520310874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe5d3afe8343680269fbca3ee805e2bb51240b39492a373b762224772c71bf3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITH520310873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b75449835b7acefc338ee6df40ea459d77e2ee68899d8d49574911a5b7808e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITH520310868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a32873b4be7b5aaa85392610230e8a2f71c5afa55955f9226a9a01eafa50619. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:32:56Z), 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/ITH520510923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff87adc1c48450cfbfdcc16e9fd4baaead291c54a6163b5a017e1e02c8dde3ac. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:50:42Z), 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/ITH520510922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5138dcfba60fac878349bf27b45f27c99c27e22b87edd380a60f37cc97a7eddd. 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/ITH520510920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cb2d0e834a04c3a9225d3405cbec45aad56ce0a7e4743167e6c45f13ea6448. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ITH520510917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b113f18179df274c3eae275cc6a279b7a71eed69a8bd161fbc7eaee918aab1f. 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/ITH520510916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc795e76eec4280d82cdca6e0f54a9e4b6b7438e39249bd1b615efe41ba179c. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/ITH520811019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a484a85007e5216045e886f005afc91a095d01ce5172c8484c3928aee5fabc0. 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/ITH520811021.
Live '98 (Live Teatro Nuovo, 21 marzo 1998, 2022 Remastered)