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 0xbf50833fa9e1144a547c2ff4bfb16ded494ca5429c9400d7bdf927d057693bfa. 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/fafd9309-5873-4f59-866a-42d8b927716a.json and https://artists.proofprofile.net/proofs/artist/fafd9309-5873-4f59-866a-42d8b927716a.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 0xde7ad75cff2eb1608eea0a9da1e1d1ba51b281009b21e9e327992bed4d06af41. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USMC19858368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb810dee8da59cdd746f5bc2e00eee9f8785f13ce8190550ef6d91033ead8397c. 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/USMC19858363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a646ed82bdd6f7200cc054c0bed05d4ea7c35943ae793e823094bf19dadbfd3. 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/USMC19858690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfbccba0627abcb000c5c1268f88ec45d1da5156833dc7386673d2deeb070d4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USMC19858361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d93a03c65920163725743ec16ed2af5861452dc1117d5147ef97c9d0706ad6e. 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/USMC19858691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c931a4b6020cf1384ede1415e9138810a51687e3c70d14d7798ba6b42a0986. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USMC10110416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cad5fed3167ad494560a6993fa64cee34ad6a6df7871133a0b0edbb74225273. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/USMC10110572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0027f350f5ffa01f19220af3ab59c9fef8ebcf0ed02888010365f2d2fe50b9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USHM80972448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02007d8c3b1673bb6dcb71b11cf12a32b656f5e94f31540dc6bdf2ae6ba8e5c2. 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/USHM80972450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafa9ec537cda0e1b9a0d4bae137bc53c58051adfe9ad01d5204b9eeec635ac3. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USHM80972451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a630850278a7f31a29970dcfd50c1a0ecef744e7992632b25a788f2732a6279. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USHM80972452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf042729b0ee6528815370f3922b804bcbd0f5a706974583ca7a31de50323017. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:23:38Z), 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/USHM80972453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174585c67b850e2de36079c771edcc7d29ecebc46efea707b3462d289422d33f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:33:15Z), 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/USHM80972458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea810f4cdeb126c6a8e2c55a708cfc8c0e3e1b8b7fccffa0ed3caac3d4fc13b6. 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/PRQF51010029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ac294995779e76a2d8a91f4da534c50b4428a2aed855ad63fc13210d4eea45. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:29:31Z), 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/PRQF51010030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad19304393e84cb9c90784c1dd38e63d3ba5fdffb4e878374df5de62076c11e6. 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/PRQF51010031.
La Muralla (feat. Tito Auger, Tego Calderón, Mimi Maura & El Topo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b35e2e4bbe8e6f4a7386ea94844c0c7ed023f32a0ac9dd709752996d036152. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:39:16Z), 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/PRQF51010032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e56dc24066a4940442d2d3c3e60429f4821c7a583893c4d4caa36f6255f56a7. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QM6MZ1404750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf47e015363555636238b63b9e3b99eb2e0ea77b118f3e677c50d8763eb5c8fb. 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/QM6MZ1404754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0507d2f25d85ada428ae9b6c8f657f3e9cbf3f88bf37753d66ba08b9ba87a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6MZ1404760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912cb5f3db3907c113db25b41d452de08e9c65e39d2968af8ac203cf7fceb874. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM6N22408572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf447cc100227ac6348525c7e25d90d387ec3f3bb08f6ad5fe7cd02f09027d193. 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/QM4TW2464630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbaa118c93a4976e9f5350b1e43c5e8de4ce941cf106189e5dd6101238be76f. 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/QM6N22408574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5edcfe6a73b0614c6f175953cdf637c57211714ce1f592d710d92eeb7cb0e8. 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/QM6N22408575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6c7cba484f3bdeb2a8ce495b5e1b8df9aef938be4a838ea7762a1f6ce38246. 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/QM6N22408576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1727ee830d11aaeafe2d391dde09e2c359e8d663d7cd330d11b24a4889e85d0. 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/QM6N22408577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb998a1a599b545ce258da8ca60cff4252dbc4da3e4ce983f8c94b4ffa3b787. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:36Z), 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/QM6N22408578.