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 0x9bb01a40eef23dd7acf024f37580c962e272a0be563a2416f359d7963631a7f4. 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/879957d3-05ee-40bf-a117-6fedc6c9eb1e.json and https://artists.proofprofile.net/proofs/artist/879957d3-05ee-40bf-a117-6fedc6c9eb1e.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 0x1c44df52f7ade1e31fcec44f934a49d7c60e2462a1c90b0b6b621e2ea752262f. 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/ARE4L1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b038715d64338b2f0b8e1f31e4d0cf7eb62a2eaea3967f30747c08f49825c3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARE4L1100002.
Un Tesoro en la Avenida - 2017 Remastered version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa0dae784996db20e8488b7d1f17f84577bee9f98c5b3be6f609810460ee51c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM4TX1715099.
Canción de Navidad - 2017 Remastered version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c30c3f981afdab46039415e12136e05facb85177c156d159fc9d9e7d45f5a61. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM4TX1715101.
Chica del Tonebank - 2017 Remastered version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f52fb26b19723852aa76c15eeec5afd0dc00716932703058cdaec9efe56579a. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/QM4TX1715103.
Canción Juvenil - 2017 Remastered version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80cccfb277b0b2b329ceffc9efc771c5cb3a1c7a5554ea31db89a503c7255e2. 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/QM4TX1715104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4166f38b3e35a8c9c092b6331fdfdddfc20bcd75500a8a957c84405011a061b8. 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/QM4TX1715106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4691df0fbe7b51f71cd08fdfeb8206d6145757157c095e4feacdeaf526f29652. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/QM4TX1766933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c919f801fb2bb41c1810b639e25755052ffffb8887b6e39082cd12b633c85c. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/QM4TX1766936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03c3c686c65298b2970de837b64aea6b063e3fcec9e4c19bd51021bbb7b7f1a. 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/QM4TX1766937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c2f8c05e048bcc800541f4daf8b8905330f3cff6aae49642735c98245ec448. 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/QM6N21731733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c74afd4801fa5f0a6aef1256b54c3c48650f8ee94e5d6ff95b839afde5144d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:57Z), 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/QM6N21731736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329ff06a4879571197409211bd75c44ab2cf4664ed8cfa30cd924941c2c6938a. 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/QM6N21731739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeb5765ad580b59c9763601112b1ef3f9fdb65e06f8f1de8a1b5dd86c52895c. 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/QMDA71868946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc6bdb645963ac1ca92e835cf362a1a4e378c0b36fffd7881d3fd3f173cb327. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMDA71868947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaa96d0aaf07d928806430194d767b138c3afacc22ae29fb0e72d749fd17725. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMDA71868948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5ca989f0e172c29c5e12293d19c619b7a99f8c44762495b18e577b96db5772. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:30:38Z), 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/QMDA71868950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ebcecdebdad98b935fb7f8e1f65b1b4586e3f251a47f3ead5da7190858b37d. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/ARC2B2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd945e2ee1712c26ccb927579bb754c822d138ac5a2e034a7ff4c79127a8888c9. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/ARC2B2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff1907b5c5912ed9f2e135ee81344ef581d51f0c4ca8110a87040f4ad77fae3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ARC2B2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bef37e8162ea645eb295c33589402983d0568e41835907567ab7f1e89681940. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ARC2B2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202e73df98a8253df18a1bdd9027a7f48dfe4134c0258a6d6ad916d776393e03. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ARC2B2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b2af9daf75147b87552f464ad95ff7cfc47eb4b325cadc0fb71858e17b374d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:05:55Z), 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/ARE4L2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8a7c54f1e04b10bcced74aec241e977f3ae26767f40d718a833edb89b270d9. 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/ARE4L2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a9330ef4fec11006ea3dde8060931321f41d36daf08448db4c197fea429010. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ARE4L2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84900f8a356f1b5c1ec7a10df65a754680375ebd02cf9cca1bea9693f1f5b8f7. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/ARE4L2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fb39a748c4c82a42e79a942419851857034f76b77e35fda2a97f7900fcf638. 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/ARE4L2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fe2f695f053c8800a9417fd1fbe3d5f3120a5d2ede4811448cd3f0eb917d49. 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/ARE4L2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc72cc99e755028efd9494f04eef266685e3fb343be9a6c52a0b358054389907. 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/ARE4L2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07e1c0d4a716cbb5df77827c56fe31f8edb7c3032621fecaaae64b00b17b4a5. 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/ARE4L2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f429386d151a56dbb3be7aead636749181466da596d88fac8c3b39435359d67. 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/ARE4L2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9c269b6638b54a5e718c62dc27aa7888cf89e44aa5a469633a9d7c2410b8f6. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:30Z), 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/ARE4L2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7da848aedde82f00f5a352c99a730344691e0fb46995e9208fdc3d45543c3e3. 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/ARE4L2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5d32dd273b37e689b7191b5b536d31155cc79ffebcc71f5c64c2b36028569. 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/ARE4L2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b311d909445476a159b66ea7ade0c1127e78cbc7cc5df8225ea1d0374a98035. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:36Z), 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/ARE4L2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa37ccb37f72e68af92ca25e23538f2d2c5ebdcdd6788413b7f6619524d71e8. 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/ARE4L2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac527d0e25ba35623f65d2f7d91330910b5082d861eab4a2c478e63ad5198007. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/ARE4L2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec13df359ba12342830f5b9236273638679b8d73579cce59ea7ba83741dc2250. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ARE4L2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8729348fdd58c0d0d3cc1857c566570d1508eec1ffa3e848112f3ccfad976d23. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ARE4L2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a6f245131d683cd0ca3d648f39aff7487309c3e6c3ac59949a31486bd7c431. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:44:54Z), 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/ARE4L2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ce93e606c108c49e0c573a6a36baaa218d21d8c3b9e7b70889895e22b0b0dc. 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/ARE4L2500021.