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 0x00409be8bc5033b50a9ee7ccad12b1d1e202eb1ace72e57ab88d3072182aa2a0. 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/366a6067-67a4-4bd9-b0b1-c50ac2c475ea.json and https://artists.proofprofile.net/proofs/artist/366a6067-67a4-4bd9-b0b1-c50ac2c475ea.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 0x9674cb8a8dbc1b7c1be9bf844939c046f83d87ddcf58152c9eda33fb2feb49fe. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/UK6821702368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77d3a599d191e1dfb6b648ffeda59c289c02734fffce10b20de60141fd2adcb. 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/UK6821712867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce97a9af06a6132a265104168cd65940a8f69bb8c0435c80a4a9daeb652ba1. 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/UK6821714695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8c7a3bd32d2f18c5fcc6c22f07320cc2588da6726c553600f39ea2d9647d65. 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/UK6821899605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533618c2cce67149f917315e2affc61ae1041165cf675ed996d119b0959072e7. 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/UK6821728477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bcb43fda1c773cd6c4b703921225eca6927661baf624976bb81d96d5f06656. 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/UK6821728819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c61ee4caaba8751e2db6569272be1c6dd0f008df2d106c91f027f598bdc9e2. 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/UK6821728614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1685b25d97fa730a155f0d69c026452c0a91e09b4b877195bf96230d334c2b7e. 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/UK6821728442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fc667ff07d602450f12e8d28a850f15a963e1f7985b7b1aefeb5f487da48a4. 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/UK6821728486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2db72d01a8bfde421d286bc639d105011bed511209cafa356238f9ab971475. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/UK6821728716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0515e38669ffd42fcaba23af78a04b963f6b321a2fce87c7f59f6ea7bdce07e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/UK6821728560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fded5e4d976dd887f31aa1db10a663ab21ad1b9ca6457cb496b8ff019885e94. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:35Z), 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/UK6821728470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da9adca1a4d78fa876416340ad6509b84370c7b70f8dc8de6066a9b6846b813. 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/UK6821728711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c3e6a255b1e61a024f9093655393515a0e48cedf216729ccf28a4f8cc2c320. 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/UK6821728735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c9ea96ed1954b4ebcbc79e7a2f3d9ef8d47447edac15c6070fd648ecdffd89. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/UK6821728481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bcc54ea9dbab3192e1e2e2245dc3396a5a25e3fb8b8ec812e6483545a55e26. 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/UK6821728633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e55e87fd1115d005d497fd77317ef1a6b4720f9bad1d688ae55bc85ca1e81e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/UK6821728495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907978e5e35ddf750ddb0181c3f02451a6d91b62f8727c53ced667d73e7639e9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:02:50Z), 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/UK6821728448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb88058cc88b4c66c2ed63e3acf1045bd9ca91997cb12b2f82291674e32ec1ea. 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/UK6821728658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bbb364a84ed6331f211ba3cd53d891196e8afb40c3283a764f9acca920299f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/UK6821728699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa23f81ac86559b2713a8a9d20cecc6d0738a020715c257a5c480c7e2094275. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:53Z), 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/UK6821728825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f16e3047055feed5dc787cdc73bdd9fa3335352459a2669bc50d8914b3a923b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:38Z), 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/UK6821728579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bd460805e194cb24e97129279802950dd145ff6a45ebf810d9159ccff4328b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/UK6821728464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800269ca3d03c99c2c0fed53216fb99913350bf4777dba88b64f79bafebc4fc8. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/UK6821728712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a10d211e00b94c8c7ebcaddbf2afef0a4c775ca39cc99f9be4e6709226d75e2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:09Z), 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/UK6821728763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7518a05d1b6c24be6dfeead35ae94427b773f7ecdd362b44fbe55928cdc8268c. 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/UK6821728849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecce7d50c58d1af74b64fb2e7578b8a31906d7eeb18bd8d8dc7dc49922fd5b8. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:08Z), 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/UK6821728584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a10319d003c09ce40c7c423f3712386a6ad92c05a3fb7833995ae610a53a4e7. 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/UK6821728746.