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 0x4a5edffe512ceef69673b2a84f7b83013699dbe416a323d71092bf67d6626ad1. 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/17a54095-d91c-4ca4-b53c-ee790a26844c.json and https://artists.proofprofile.net/proofs/artist/17a54095-d91c-4ca4-b53c-ee790a26844c.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 0xe56772afc18cdd791c1bcbc62e5215b1ad03220a0cd4c6c0d046cc3b11a54b4c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:25:50Z), 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/UKXN22257824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf920a9b0c7f4f49b8e8e7f99864ea1951db973f66ca46fbb2204b044e8c5662. 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/UKXN22257825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360dfe42970503f7264cfebfa633c8b9c3e272ddf45c9324d15419faaa311037. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKXN22257827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2407ee99d530df73e1133e35b4c14980359d4d64e6d92afd0fe46b55401e02. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/UKXN22257828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412ddbc05894b5f2a9dcb8ce62bcfa3561852d94b2e492430f21368165b19448. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GX8LD2304010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3dc224a8a6c3e276da203d5f5fb2932dcb81a6d0e887a48d2a668771d1dce9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GX8LD2366029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1466d75657b4777648ef0d3f2ad7fb27b1866d04ebb7e763c6a47ee287b32ae1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX8LD2343208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa8c5701fb713d0715db2644f6268dd2ff17166d7c4edb64725109b1881a4b9. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX8LD2350483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7cfb729ca15a7b8e62ba55163feb0d0a1333a2a5bd12d68af95744a4bf4faf. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:59Z), 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/GX8LD2373715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7743ca00270375c68343000142a3055ce153df4cfd4558c0e131bf907e6dca86. 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/GX8LD2359388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b34dc3a1166d01fa25c31b250c5f74e9db3f45fcac1680cc21dd6a3f308daa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX8LD2368747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06909a07410059df70eab191b5195e52d15a31482e9f448ce9f1f37db2fe9f09. 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/GX8LE2351394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fec1a62f9824f5e0908ec8526902d530eedb02b6746aabdbe6ec9bfcb3ef8e. 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/GX5MX2303101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00721576720fb157780a8b37d51af28e60782da09fb9fc548f3a5f4a3f233f2e. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/GX5MX2320841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8df65934340d886b985d43d1b8a1c7188867726284db072993703393cc9fca0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:19Z), 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/GX5MX2354790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab61e3477657ad8bd34edc70606a14080afbe053a8d04b07cb04937076db8288. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/GX5MX2341587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b4b601a2c8ed4567db7ea9a6d9991f58db6c777231df85275bb65b2737dc80. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX5MX2329454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97c4556dab2698d7b36a34169b326b7b35879ec5cdb471a472bb657ab2742f4. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GX5MX2306613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba27dcdb37f2c28b665f4514af85dddbf63bd82b9f9547b7ef35a99747d0459. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX8LE2454994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f9c04652d7f0155c072e04371e1a3619ef9fd170dc99c60b82d886e7bc93fa. 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/GX8LE2451160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5ffb45f4dc01086bb13bf9c7358c560e688433d509381b2bd607fec423b852. 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/GX8LE2464557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066263be3bcd18c485235439be6a6adfd066d80d9eeb1bfbd731a35f50d8ec6. 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/GX8LE2430323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10edcd80b665b24517e4396e690fb3fdf0b5dc97305b8939508dcd60a68fed7d. 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/GX8LE2478912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdec1f288899c8ac6b0ca689212563d14472ae5e89ee2124336797996143037a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:50Z), 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/GX8LE2470756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8800eb91495dba447d69732c4323616df5ac6087f4dd5e6f796a7eb02ca3deef. 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/GX8LE2477282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e700cf79c0a8f746bdc4b497af08443df96cc1f69747d8d34b951effe5a712. 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/GX8LE2486766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9978795bc8a58355165d224efcb1f91fddaffdb1bd7c587a92399b5a24d150. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GX8LE2495587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc32bf234d9ecb54732d9fb9acbb14266addbb9dfa6cbedcdf201d67062637a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:00:19Z), 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/GXBDT2516294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892427cabc25e75caffbb67e10377a3b5857fa8f0559cfc007fccb598db533f0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXBDT2549543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3c7fdb496b86ae2a3de91b3402b22b4a5ad6d39e78f7caae4585152ff91fd2. 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/GXBDT2510667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796559eb06625b9a6fa92f166c2ba0938655177f5aba3fbfc1cf6fda2ff28ec2. 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/GXBDT2566214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2e404b912cf4691eff193911356d4fe1d91c9241a0d089beab0369fb181695. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GXBDT2563468.