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 0x0024cd9cdec101c69222ee5c003f953fdcf2ff9e3a5df1d39c7b8538ea5002cc. 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/4fd9ff3f-f866-4c27-92b8-2a97d889d4cc.json and https://artists.proofprofile.net/proofs/artist/4fd9ff3f-f866-4c27-92b8-2a97d889d4cc.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 0x03c43d27d92e9a97f1a94339d257c412ae225d3dae29f31e15c1343ffea4df24. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR10S1452057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f188019f5c383f0252bc05eb73f032c68f57eaf9c7e7803d75241e5f632ac6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:03Z), 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/FR10S1452060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceb540c5ed1e8e81e802563aae2a8608f6959725ceee6bd9ed2772c7bf262a2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S1452030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8867019f4dc98cae353d970716377ad70a51deaacd0ece121df479919890fb8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR10S1452045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447f0575802dd35ad4f3ee401d0850743541870e973dd2e05825aba27eafff0e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR10S1452046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb2d817e093d5f40fd45efd3eecd9ce7eebdec611f615ee5adb689d40b4bc82. 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/FR6V81947004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41adcac9a3c6a1144f2f3e90549bac5365fb1585b9d1dc299d4f5ca0095d2289. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:17Z), 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/FR6V81947014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5065fe758149e7f972bb467fe105a96ead2eed99433188bb299ed42212ff955b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR6V81959585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471271174aca325ee01379891f66ef654ce7dd8636dc51af34f915403c128758. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR6V81959588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021e1d0a17220a2b1f710ef38e5245defc8aa453578258e93880b7507ff8806c. 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/FR6V81959589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8281a8a15c86195e2809b1ffbad9c18d85c645f3b6fac4914384984be7b45cba. 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/FR6V81959591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0570e0c0ca6d7d503d32f7af8b3e74e683b367a4930ada514ee350d2c7d215. 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/FR6V81959603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050066d92bc3e808d1815c3fd89348eed9e9a8204b991792ffce8422150f2e92. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR6V81959606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562a4adbc6fe28057922e9e8b425b07185fde1f0188a0771c291a387f9c5b054. 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/FR6V81959607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe661da1eb5947027d506ca1c0578e99ef9664629b4e2a6b6269311927430d9dc. 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/FR6V82631819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef089501e691a372ae2140402fdcdc716a349ec1af99b4abe29ca182c70cfd0. 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/FR2X41508221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f19c04728fee47bf853e0d37900bdd58068191e1cd4478efd46a4f44dae7d9. 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/FR2X41508226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d85eaaa92145bc6202c34344bfaa87489d6644d5734f2bf125a8bf1073f861. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:32:56Z), 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/FR2X41507819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb921bd48a8503f3810ce0cb0c221cf07596f7c286ebdde2f9a833aa747eaa2de. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR2X41507820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c81e9a9cb87dffadcf70ab9378005637a285803a67f23c22f60691101066df. 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/FR2X41507823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd218fc736ad1ee5cfc90e348b481218acc06e632f7f1c5a4f1b3788d5c27bd. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FR2X41507824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c2dfcc7e10545379ec28b891244bd63b02ba41a5e048615fc1b6992472b921. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR2X41507847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234e271c38846d5957c94345011dc47a252763cc53821932a007a9c30f440d8d. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/FRX871570647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9eac8cf156595be7570541bd1bb21d5d660266caa619edb4a6934eef0d606b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:46Z), 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/FRX871570664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1c4f14498aef7654269b5d83baf1c0e6ac1a38decf8861e8ad107983a773aa. 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/FRX871570650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b2805257e6333969dc6b66a6fb0c6ed67d8d4d7e12d55c051d237e8915c104. 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/FRX871570653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f07361a707b71e8d9a92c21631c86febd935bd59fc60f20c3c8b53a32613fe2. 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/FRX871570655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f6fb5fff238c1dea82c56d2ed81b114d27512388b9fe411630f3ff57945cb2. 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/FRX871570657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f44b393e5cf8768840cb9bd0ce01a871166558c5bd56d331ac1994ffc5cc428. 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/FR6V81959587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e1f130e34e7b237dfe2bf9875dbffb76a848d5c1c088fd2fb4b306acb2540d. 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/FRX871570651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a69be4514e60cb6607473bd1ae3daa3d9b63049601457920c66888750e6f788. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:02:53Z), 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/FR59R1671244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ac0c28270e4f3677dd6821915235fe3deb123a57dd0e499b58617ec04cf7de. 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/FR59R1671245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a178e2c644365aa9f644aeef00c5d1da0fe94eb9207f51bae5c5d17b19a766. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR59R1671257.