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 0x2299700b8c28a30a9d31410c7d038f85c9cf77429691518b477afc2f8ba3c4ea. 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/adcee7d5-09c2-40e5-9e11-534448e45e24.json and https://artists.proofprofile.net/proofs/artist/adcee7d5-09c2-40e5-9e11-534448e45e24.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 0x6bd1725bd25db1314a002f8324dec385a1d42313159b46f0f7c50c8610d2e5b5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:44:38Z), 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/USA560645042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dfe8733f00c271809a75752a965eba91d6e0fca4fa28ecf895a1e2598bf169. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITB008600228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab0739a09b1e88f4a3c9188a37d9bf9f23969f116e5f4b66883b0ce6daec718. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITB008700167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc4866a7c6cacdc3a071a72a5b1c22877fc141b0c2648208d028da1740a2fc1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:57:53Z), 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/ITB008700162.
L'E' Tre Ore Che Son Chi Soto - Canto Del Trentino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb8c15cc51254ffd2a20e31a312d0ccd3a5e230c53d5f4794315778c4124657. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ITB008700583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588ccc3705e7c137df813cf566d0871065355f7393ba713a532f79473ae3a127. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:21:56Z), 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/CH6321405157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d830260af571bbdcd80cf6a9e390c5f6418dec5353d03c053797fa4d4438822. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:22Z), 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/ITS041400288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf21496e1bd09ea8706d1bbb481708013553a7b7192e190fe9ab67d87dfeb0b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:23Z), 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/ITS041600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb37fff88a3f5664724eb0dedbea365b956271722e0751bf158e97739e72d97f. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/ITS041300845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ba6b63f2d7f85507512d80923e09657d82109870f79c5c2b8dd90b0b3e2f3f. 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/ITS041300849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d11a8edbd6f1fc74ad24db71676d503a61af47f29259d32f156845ce9c2434. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ITS041600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afa8b81c5b9e699532fedb9eec33c21e7ab7553c76fa7de99b6a61d7dba873a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ITS041600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b536ad6c1c3ecf7d3fa8a57e10a5ffac3d1d1c282818bb7ef0ca87c50b7aaf4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ITS041600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd295313cd279159713ff486116c78d1c80e83c1143c974adb62be46b5a0062c1. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ITS041600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bbd3630747ed411692bf413a54680f62837e48369006462537129e9d786830. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:50:30Z), 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/ITS041600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6420f6e61f6d1521e17cfcacf0fcc886c7e7cd1c8aa87c0036dea00e474d7ff. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/ITS041600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f3e171eff6d5a0c0aeceb388189535949dc46161a64455e14317dbeabcebaa. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ITS041600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80db49473efcdd0469993f2aabafda4e9ac46de010d7037f1b9655f2576d640. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ITS041600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599b449570310fa8dbdbc8d414da24cb6ce19678b904c69a88c69465a007e8b9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITS041600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3995c24c044d12b81930722320f0dccbd14d94b8543ef2a00b64bb163ed606ff. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ITS041400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd7647d00fb4dae6dbd388c54b0853133a08f719887d122509cc602edf0c3eb. 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/ITS041400261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fd3d0c1c56fb62759921e139526f169c1a2985114126e3143c7658d6e64600. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITS041400280.
Ta-pum! (Sul cappello che noi portiamo cantato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca098a26aae6192743c6a8fbb297eb742d59ff6a05fe0b3ca09aac447dcd52d0. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:42:09Z), 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/ITS041600146.