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 0xe41320c996661ba17b0e7380e672efe3a927f060757b53ac549e550814803985. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c398875d-a957-4efe-8d51-6527d98eb575.json and https://artists.proofprofile.net/proofs/artist/c398875d-a957-4efe-8d51-6527d98eb575.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 0x3e8c0710679842b5c046a4c0d3656ca9d980349bbac2d175f06c2228da02b88e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/AUBEC1833406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ac1ec4798fe404252ab4081de1d6b5eae4e9b0ad9ba7ee0edbe3b8ea744bc3. 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/AUBEC1904524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceb823832a1ea61e84f4fbd092069fd4dc851b1e7ddf3311fce23d0f4fe3648. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:29Z), 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/USEP42018003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573b206194a9d5739ac2becd68c8b158971b13cefacd4c00185a0feb164ad6a8. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USEP42119005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47e2e31c703f2f5f289558a67ce626e844443bc04e5005bf88475e9041298e6. 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/USEP42119006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49cb02f92c75b1c5151575c3e5ded25f284fbb3fb8daf9c452f7986c0a2168d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USEP42218002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66d8a7062ac3ac4391a646710b6687b46dcf76e62d1f2c83a9237192cc834b3. 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/USEP42119007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b048fc69e98e0e104fa005126cc3c187e7cb990110ef5973ab1ceac5ae03b41. 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/USEP42018001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573b206194a9d5739ac2becd68c8b158971b13cefacd4c00185a0feb164ad6a8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USEP42119005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47e2e31c703f2f5f289558a67ce626e844443bc04e5005bf88475e9041298e6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USEP42119006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172af785c5b245aec0a394210e3de555e13fb68d6546eb2caffed366236e6951. 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/QZK6N2477971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01b8aace72342b61c3ae2cd2be158d747650571c771e74e620d86752806620d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTBA2454082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7dd18bc555bb48170f7aefbb8ea03103944aeaee31028150c77e667dd0fcfe. 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/QZTBA2454083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf28c46e1264f9897de59763829fe011ab7f7a75453a7f9d52064fa8d9f1ec55. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:06:25Z), 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/QZTBA2454084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e20bb6c96b59b745f1afec98a1f261d77b049c218f4b32f28981136dd82eba. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZTBA2454085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f58a077d9ed3504b93fa46826520679e3e31c6b925255703d34853dd489c7b3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:33Z), 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/QZTBA2454086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b47966c45586aa3ce399aaf90309bd444519c89d5030aed06da8b8b8e3dd89. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:50:11Z), 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/QZTBA2454087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa110d2b657e09d360475bd424733e100487678d7e2bd94234410a0816ef75047. 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/QZTBA2454088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5967f2810917361d6a3729595bc9d0dcd868cb1dd241f72a37ba09b266fb96. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZTBA2454089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34797bc83ce6e5d1cc508c4db68b96afa71f39692233487593669eff3784d7b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZTBA2454090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eb8e5e483bac62cf62cbf1d5f76ad861fe08eddfa988a30d2f1aeffce80246. 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/QZTBA2454092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01b8aace72342b61c3ae2cd2be158d747650571c771e74e620d86752806620d. 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/QZTBA2454082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7dd18bc555bb48170f7aefbb8ea03103944aeaee31028150c77e667dd0fcfe. 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/QZTBA2454083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf28c46e1264f9897de59763829fe011ab7f7a75453a7f9d52064fa8d9f1ec55. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTBA2454084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e20bb6c96b59b745f1afec98a1f261d77b049c218f4b32f28981136dd82eba. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:07:04Z), 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/QZTBA2454085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b47966c45586aa3ce399aaf90309bd444519c89d5030aed06da8b8b8e3dd89. 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/QZTBA2454087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172af785c5b245aec0a394210e3de555e13fb68d6546eb2caffed366236e6951. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6N2477971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa110d2b657e09d360475bd424733e100487678d7e2bd94234410a0816ef75047. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTBA2454088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5967f2810917361d6a3729595bc9d0dcd868cb1dd241f72a37ba09b266fb96. 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/QZTBA2454089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34797bc83ce6e5d1cc508c4db68b96afa71f39692233487593669eff3784d7b. 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/QZTBA2454090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eb8e5e483bac62cf62cbf1d5f76ad861fe08eddfa988a30d2f1aeffce80246. 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/QZTBA2454092.