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 0xc17b54d0a28a71fa05530088766dd143a08a38b561631fc34f5f9ea9e9763771. 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/83d577b7-3785-4f92-b2d9-8e80053c25bd.json and https://artists.proofprofile.net/proofs/artist/83d577b7-3785-4f92-b2d9-8e80053c25bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Parranda (LOS Cantores Koko y Koronel)
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 0x04fbc0a5dbd5af0c9d52cd722b16747a5058e12401f0570f83b713fa91088ad3. 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/ESA012027551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4ee626a78b35174ffa861898dca4130c910db520b231a097ef87dd35075262. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:45:11Z), 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/ESA012027553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7614babd148b7dfc53ba57fd99ebeac6c81832ccc45119e7d836835ed8561fad. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ESA012027555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7ba6e3f76ce41ab13bc43790e01a3a7e0fa2a527972a0dfba29a427d3801bb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USX9P2013593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaacad3c802760be46a96a555f3659ff94c0495c102104373b34864d666ec3ed. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USX9P2013596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4af64f8cbde36a3c98ec9b3ea66ff3938b2ae286443e94e3e4ed68b29953f0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USX9P2013597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af4085b1436ade847d949dc2adcf1fc6aa5373718dd4eca5efe3014360dde93. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USX9P2013599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7ba6e3f76ce41ab13bc43790e01a3a7e0fa2a527972a0dfba29a427d3801bb. 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/USX9P2013593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d855b80b4fe2d0bddd7732671496c2f9c0ce17b7038b79772e4b1becc5bc586. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:15:20Z), 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/USX9P2013594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaacad3c802760be46a96a555f3659ff94c0495c102104373b34864d666ec3ed. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USX9P2013596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4af64f8cbde36a3c98ec9b3ea66ff3938b2ae286443e94e3e4ed68b29953f0. 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/USX9P2013597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f9bf490a4145167a770f7ee3e2aed1308d3c5433c833abf167d3fa0f8b4032. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/USX9P2013598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af4085b1436ade847d949dc2adcf1fc6aa5373718dd4eca5efe3014360dde93. 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/USX9P2013599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd095a03b9d5401be80f89b44c24662301a4f98aa387de3da0996fe30f50307a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:07:58Z), 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/USL4Q2101235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd095a03b9d5401be80f89b44c24662301a4f98aa387de3da0996fe30f50307a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:19Z), 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/USL4Q2101235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edb3fc12d9f8e84b362d8123f35ea573233c434259d3b784880bfbff9501309. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTPX2263360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edb3fc12d9f8e84b362d8123f35ea573233c434259d3b784880bfbff9501309. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTPX2263360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10818ee8947614b4ff0a6f0b9668fc21421b4c926d7291e7dcabb364d2496ab1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:21:24Z), 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/NL8RL2461928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bcdd7299338cb1576ebef72c9e5f53461d45f98471ebe4dbea92795b201c12. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/NL8RL2560036.