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 0xab318ae60e58d1d0d99b7f4667cd2906221b70269534a8b91dae7b63e7e0e9bb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a30ad6ba-052b-4d30-a7ad-3afad206afda.json and https://artists.proofprofile.net/proofs/artist/a30ad6ba-052b-4d30-a7ad-3afad206afda.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 0x54a2e7854647e68e1ed7f7e9e16fbf0a2414ae8ba2d6eed058ae7f869e08dcfd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NZRI11901210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee74c3a81354ea0b90b04dc9ac85d5e4ab40d9c7e38f3c5ee567d85e0e0ae2e7. 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/NZRI11901212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdf7347251dd0e95095e659309212ef9d2be57454160a1410b810c786d25bac. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/NZRI11901213.
Catch a Falling Bubble (Catch a Falling Star)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50db17d6337bd997ce18c17b6e667a91b0ffcd7f964bb32fbdea0a4f313553bb. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NZRI11901222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37aeef10ed1d0aff5c2be50c22a05601a00b6d2da05a7bcd0f35b581be2c270. 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/NZRI11901221.
Colourful Kiwi Christmas / He Kirihimete Karakara Kiwi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e1769705c91b9e45feec7f293d8290b4d2a06de1cfbaa2b6bd12256aaaf8e5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NZRI12000278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767a488550e7c8ba7916da3f1c767a26fdc2dc0cb8ea4ec675d9c794eec839ac. 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/NZRI12000279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807870c5274cf09e1117b796e746f69eab5ecf45047dc019b8f3a24d307ac521. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:49:15Z), 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/NZRI12002018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11c34f6dad37bde9f28f95374c78f8db3d8f8b05ae5a95299ef7226164dec1e. 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/NZRI12002968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc799774bb839d77be1b72e639c253ccb78d2375a2aeede59531ba3ff822dc678. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NZRI12101043.
Old Macdonald Had a Farm (Samoan Animals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769a435da19c90209eab028f379e8ba768d05bdb900c99739e2b722264fdf38b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:35Z), 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/NZRI12101044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b85782d7ae023d463e1e78a71dc370afcbf40c00a0a87026b9a60eaefc35893. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/NZRI12101045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dee6448180c9da597f78f2b1cefe39e06412d7b0179346de6becc735767e4d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NZRI12101046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7ebe7597eddc2dd4a8c4bf13aff5313a0ed0632c4d9fea6f54f264fdf16f05. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:33:19Z), 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/NZRI12101047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8fb7638788227b4d3954f635725096f85a049af1ca0dce9edf2c51e8bf5446. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NZRI12101119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688ea55e7919133514cbcbd97751d07672fbf02015af18e302d1566847767878. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/NZRI12101033.
Old Macdonald Had a Farm (Maori Animals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9465a410709be46cb52fa3bba8aef899e92784815c627caff9f33bbc009f777f. 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/NZRI12101027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf47740e66e3ac8b583a26582115bf1f31b817ece3f326abfa8b990194b59885. 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/NZRI12101028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91abf49f4714f966efd31e09077dd1a71370287ec6246870ef7fbcb79ba74f28. 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/NZRI12101030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbcd7429a9481dbe07d5296ff03d900ebc828ca6951c09a4fd6d8fbb5cc044d. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/NZRI12101031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25648dcc4e57adcc97a0bb96d7de04744c4eeaf401ee86d9287db5c8d0891cce. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/NZRI11901214.
The Māui Dolphin (Vaiuli as 'The Māui Dolphin')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3cb2c2d9ee0e50f7cdc016c883c54164e5b60eeda6fd6d356ab3bfa158d94c. 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/NZRI12102676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f575c818085cb12559ff7cc56dd9b6ba4d6c290245918d9c83002d4d6e7ea70. 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/NZRI12102677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d9b3014d84bba9bf03313828db6a93871934bd78d6bfe15726a4212c880ad3. 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/NZRI12200414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1758a6a1f33f4c510fafa6e685727dfd0f65e6316b31606b7dd015ce3c566b. 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/NZRI12201908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976601f149c872d7189eefc7e190ce3838e2403f41a2a942a8876379fd4c06dd. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:28:45Z), 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/NZRI11904357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b309dafe073c53171da2f57a78653c2d17ffb497432d782fa26132c2d1cd98. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:57:13Z), 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/NZRI12402430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ee034158cb603a93196009a90f6718ea46ebe481408b382a50712d8635d4cb. 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/NZRI12400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa04aed4bdffd36b065d0a5b4a2cee9942a4020d28db9a66a09f230ad29fe3ba. 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/NZRI12400785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1632e349b89d01435ea4f4af5d524e68ede4210aa8af35ccbf53f7bd7fafafd. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/NZRI12400788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b1938d1bc030ad7fc9c692d03a7d2ebe1654665c9cf470ea85a1461182dab6. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NZRI12400789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f28fb5992dc72f6f370016b035756ae9f8e518240d692be85ab474b98120055. 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/NZRI12403735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b85ef19913e1fdda88f1aed18e74834dfd70c096c814100729e2276a6e73f48. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:01:12Z), 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/NZRI12201604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f40d490262d7fc6684178f8141daea53946e2fa0d4188be6ab06e2929f2c3eb. 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/NZRI12403725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cda503efa21f508c344606d6735c2f269adfe2a34a1705db4c0a19e386d527. 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/NZRI12403726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe630cf96fa6b6eebbb878f68044f5391661a368daa42c35211041edb0d526bff. 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/NZRI12403728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3576bdc2542de959339d94dceb96a4588e109c842e413fa5f2d96e981c09ef0. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/NZRI12403729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc267189969fdd3c3ee2704b94e3d06eaa358026248848ee8c29169c33282b603. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:44:14Z), 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/NZRI12403730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59c2c5978061313d784e01f9aa829263978f1dd8cc725729d1bc8cf9f665167. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:20Z), 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/NZRI12403732.