1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x60a6564e71dc539d861e4c400d01c8975da209cb6fad050730f4682647265da2. 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/9fc4ac46-66ce-4f00-b3ed-c6d56b80b35e.json and https://artists.proofprofile.net/proofs/artist/9fc4ac46-66ce-4f00-b3ed-c6d56b80b35e.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 → block OTSBitcoinBlock must exist at that height 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 0xfe079167371c7592a9577af937af76152fa463eff9cebb4b5bc5a2b0d2bc33ee. 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/GXD7V2454354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395b54afdb294d2e5c8e56e40345632a8a50b1129583ed1de2a005364479e81b. 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/GXD7V2402455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7095f57fb8187347d0c5bb28d20ec5fded31c70511c2d0ff2837abf0aa2731. 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/GXD7V2423173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12b38c51ef13fc2bf8a82c5631dcf97628d01964890c3c4d3886af88b015fb0. 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/GXD7V2453839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6826f40b1bdff7b5898ca4d849387bb4b1e55a24025b81b2557e9e1df953c1bd. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GXD7V2430029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cba286c423c4a5492b6a7f1a89cc0701f520d3d65c129369c37a8695176aa0. 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/GXD7V2461247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4614476709e3c163ec2a7f7393bccf15a54c2f1e96edaed23367c06c697e1e69. 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/GXD7V2469716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfb498104930926978a42c394b9355777c861c4038b9670c6a825d59bca2c98. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GXD7V2463933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab24c5c590f74532d1ff25349fd920e9444d7534a833edc701e9f25ec6d2556. 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/GXD7V2484543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858044c6df4b62b3fe9da5ed19eabdfa08691d1454b5fcc0f6056b3da800e1f7. 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/GXD7V2473572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa402e136033382329b3f370d2ff17ac8ec4f24885d2ad5835149cc20bc42872b. 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/AEA3A2421955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ce7fdc15bdf1778ea0d6b7951103d8ea0f188ef2c08571c91d6d175c668251. 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/AEA3A2421989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad891f4511a46ddcc4407d5487ac066b51bfd47608c7ce4a9f786005d6f1a690. 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/AEA3A2421991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8c0ee51b49b47f0c33adff84549fafb0ef2bca0635ea3d8c5d76e22e13c6d0. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/AEA3A2453913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9ba87b0bb2b8caca7034b75a853faa31cd6316d54d61fb3f20cb0ef8dce204. 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/AEA3A2482178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989578060c7798356b0e8513c1a74f092faae1a55ffe336401b82cef8a4476b6. 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/AEA3A2482230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58131a0a04f1247cf2276b88062a7f5154b8b485c0616bca4f35bc75d178a110. 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/AEA3A2312972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb6605c957f7e679f19a76d8122da03013bd07342e21c1d2e31efaf3fcb73f9. 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/AEA3A2368544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f9927d88286075cc144569f04eaaddbc5334411c6cdd637b5af64e81dbe4c4. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/AEA3A2324132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe994e1b099e8d732afed8f5938a8dbc140d1ccd4c380e46b15847c66519b6dc6. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/AEA3A2384692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59357a94d85a015595fbea7ef9cba428f1c97e44a0eaaaefaad2522582c3098. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/AEA3A2337060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef4b05c1cb121813eb6220f28b5c6543faea729694112a8cd29980bbd76d3ad. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GXD7G2255612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dac634efe03b503a4d52f9c80793c810faa2a506d334d135338a971a03cbb86. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:06Z), 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/GXD7G2256656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8840a66987bae05024c094962d5a2cba42d4583d0bf7dfa062397403c82ff1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:47Z), 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/GXD7G2259686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42df6a599cef0cf550afce8df628367868d1c8d3f2d99722e591235dde22047. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GXD7G2238462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf2487e38ca630eda81591410c39fb09389530ecbb0b8be63de1b258931c917. 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/GXD7G2230889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16787a1a04aa4edbd2ce4ef3012dacbcdd8c9db77b6f0ade7005b9ece5df6f2. 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/AEA3A2235791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2f762b2db902e1febd8665d50d9e67e98fce738effcee203b19f38767384fc. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:22:41Z), 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/AEA3A2213455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f73e32c6f60c01f1058f2bf30c79f5d8157af5bdbe82bf403a83f50c6a9658. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AEA3A2216582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9605c9af866939030c87fcce938d3d0f3df927ea73ff27b0fcf1ddb8641e2975. 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/SGW502295432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6a64d7d92452ecdd3d34ff927b257552d0b7c76e0d9cafdfb2906964bd63a3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:56Z), 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/SGB502516808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4cf369ca095720765a70e882f09539e6205aa279369370dd5003277e871759. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/SGB502519942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6acb0605ec4eb88155ff333763dd452252d2defb30acd062bd3f3bc1afaf43. 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/SGB502585881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3eaa5516d2686b53dddf235dea2863ebdb026d036b39399a74a2781e0e1718. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/SGB502533426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf490193aecabd805161065d52134c99ef3350f9b8552d82f5c9f62a277b0281c. 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/SGB502597297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655bc840d99cacbdc4e210cfd48b60d50cf9a0df45a2a9066720145329134491. 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/GXD7V2559293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867c8c91f61c53eca2ad444af2d96d2b41ac348e6ce2dea6f3b7c182af474dac. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/GXD7V2569575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04831ae2eb010c9956f673e2d6f9c6da6d76f24dd3cb50a7547b35c2f27876c. 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/GXD7V2578914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97882e4b97b40c27e7feec72758c7d47b217f0ccf27818dca35f0b501d34c8bf. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GXD7V2596908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d31c246570bd6a71dafe14d37e29491bb56dc5c74b7aac9507bb2875f5b0b5. 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/SGW502598867.