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 0xeda575da768aba8c4ead397000ffede773b47ea6239561da325496eb304611c1. 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/2ba3d0d6-fb9e-4c7c-9750-f3ed367e8410.json and https://artists.proofprofile.net/proofs/artist/2ba3d0d6-fb9e-4c7c-9750-f3ed367e8410.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 0x6d7de9ca3c8dd11f66017e04d08dfcf778b3a30845eda0879f15b7660eb5d0fa. 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/TR0061900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4775be430118e99f7d4479ccce34f1a1bd2511d374fb09a7d5d8ac6db90251. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:34:23Z), 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/TR0061900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd3e000cafb2f4acd09c1d43d9c411b551e513171dde5b57df3fedacc78b6ba. 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/TRARD1600235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812ba12ff0d93b0f75f69e4c9716fd0e74af8531371afc8467a5fb98491cb7ff. 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/TRARD1600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4aa5c4b2d9959238f213ad58425facb169a6dd168deb57f3ba503fad079b33. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/TRARD1600238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04d48b9028ed4c47e52f5d24c96d309da20657e3bc763a24ee767eed4680c03. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:53:07Z), 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/TRARD1600240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57df3c5b1b70371f92de840dfe81c16bee5eef084c5fc458ebb0d6033610b7e1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAHL2318124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70ae96a87d42050a45fef042ded018af09272157701e3ae23f532194fbef2d4. 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/TCAHL2318143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92e669080dac3046c6227a0ffa6e474c8b592302d179e397f0c06b83be99fe0. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:53:52Z), 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/TCAHM2351752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c084a7ecbe72a91273cb64ed4137b54fc978e04292eff8e65cd644d1201209. 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/TCAHM2375526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edd92596a567e5d01128da7fd1bf9d07e1ea08c983935ed98f79bdc32dd7e88. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHO2367582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba83faf3be08cd61c7e10034f9785a99a13ef7cc605dbb1742b2f45e87ec15c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAHP2302388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4c4fd1d5af5b4ceef379570a47b047c55c81181f2c0581a247fa859361e20d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAHP2351367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea25b8beb87ea9bbb19bfa69ec1c00da37fc79501ef678f2ff969d34c93c001. 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/TCAHP2351545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3059c07c9701e3cfd8a15f0814a807250865cd296b6d195beceb10e1eb15d6c5. 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/TCAHQ2384477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625b81eb42eb025572034323517a8dcf58b36faea7c677b90d03af8c8a0eb83d. 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/TCAHQ2391449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e15135165fbebefa62fc76770dc7579165996b23ef667411204ee96a4aa052. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:15Z), 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/TCAHS2369413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6251b35eaf83876f023707664bc9abb79b0017063e28bb78f34b0d278ecae3. 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/TCAHZ2428689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f089e2105bedd29fc21c6c2bd92a950d4498beba60fd578bbef97b6fc411135. 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/TCAHZ2428741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffcafd60816e7857f100f50347f548b423e11294ed04b8e579b4ca3b7a3f674. 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/TCAHZ2428908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf63b4aae45ef723d716bb0748e83f5cf80a5999cd10702748df8d04e5c292d1. 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/TCAHZ2428921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f2bc386e89dff2f512d7d19901407f770eff68e35062301ad12d4418d9cbe1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIC2433401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222756cbeb4369280528f678db360efd954b18e085fb59392876ae923b60ff58. 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/TCAIG2411030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffe9692161d4c16d93c7966e414b0eef32ab85bf7610a72874839a9e7a9b492. 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/TCAII2425162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d308942b6c2988782d4589f178207591cdec7038027453ea53a52340b2b90a7. 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/TCAIK2448226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d3f84a079625746bfac84988aba91bbb2b382ab5f985e67678adc50fe4bf3b. 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/TCAIO2477262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54ba18561ed082c85d06a2d34ef3caebc407d7ee56fcb6bc430bf926da3f8f1. 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/TCAIQ2492710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251f25dd12daa9c16e3e2f78c0f02718143f6e041fc3d2645cc1b3787e69b8a2. 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/TCAIU2479592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36be7b5e00cfdffd26a562a14ab5fe6247bbc71e0344d99e9a7db4d77c953765. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAJA2406934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9568dabb0fa2dee86477c383b49c3aad293cdb829f1ae220612926c579f79ddd. 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/TCAJD2468315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802833ed78d623f4be4bf90c7b1ea0b479372a54b860e3f6de3dc86d3a527262. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TCAJD2465047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9d2a7d7a1770702675c90740ed236d86c2bdb2b4644aed90cad520b1ffd06b. 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/TCAJF2571815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732fb34fce7dea4ccbe4be289ecf1c70439f7c7122c840c7c7f58d4560881ea6. 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/TCAJG2557077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9220629b246f184a00d699dc091338d2a043c0e765e848400656d387218436. 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/TCAJJ2538175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1928d0c3f59ccb5c211b25012e530a2f99f6907b6d262d235f7b3802d8b35f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:05:40Z), 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/TCAJN2547429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6a573d4b73def9fef4bb12e2cad2affd819f97c3732e88bddd35724d910203. 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/TCAJN2547441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ab8aa61fde4efb78f14e0b2bc37ab64b927a5dd2a233c968fb86ea64ad4d79. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:20:33Z), 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/TCAJR2562545.