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 0x2d054acac113dd825ec639052450fa8276cfcff636b9077edaca5225b9dc9756. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daad3172-b234-4b3d-acb5-565cc004c7ca.json and https://artists.proofprofile.net/proofs/artist/daad3172-b234-4b3d-acb5-565cc004c7ca.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 0x9874b4a6ca6505f0b5d52169a5688887acd20a7a77dc5551e7649129f5695897. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYX2200442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9762c51c2f80c099e32d3246dfcb25fb265ca1ce4d13cb4712fcda6dac46bd52. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEN2281417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927047330707890a74e334e592bb8ec7c37bcd8bbb17c8962ce8e67d06a93f3d. 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/QZK6M2110702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8685c0565dd4b98d41d9753e35dd59e9a8891e0ef1f93d7226273a6e3a7fe230. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMEP2120770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586ad5880a4af98f6de5d119cb6aae10aca2c73ba01b52c3a1c3002c3ef7e824. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6F2442741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef002380ed6de1eaaf2de43282347fdb09d6f39c2571bb9d5060d25e4a297aff. 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/QZHN42448705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b9c2d7f4277b7564933297a930ae70ac478ac2c02285e37150bae688bd2293. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLZJ2490462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8056fb920655849a0891ccb6b1adcd97e10872fded440bab4fe33dc344c57c0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYY2432336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3928a4a3332ea69939db28f71d4f2d43a4aac429986dc651c37b2068269ba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTB92399536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca69cc58d9cfe5c6d8f08795f00266aebd21dda2b6eb50ab1cf77fc98e7573b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB92307253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c72db2df51ccb4885cf15101c69ec4c501add5c583aa27a8cf6806a7ebecc5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB22332444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe184bec11744c8ffaecd2d0cb6b17bfe7e44ab9420d41a405a05ee7694a9549. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPLR2331723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee2a53f51003d6fd55fe9b8c4ab3892ea1b46ca2debb92eb6a75a337cf72b32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEP2307126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71949f11d22a7fc30c6fe4d75f4ea966a1a8f6c2143c84446d04b82eb2dce18a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6F2319410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dd08d5930e18ced9bb924569d37e3242683287271b44f9983a2880c0a50678. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6J2381043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed1e7e09f57532827ff955d8c09fbc9c4c22f726007e9f3fdce7284ef176278. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6P2358101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699bf743557dce923738b6a6aeab7a90282748d6ac7edc3d818fa1d86c0a8679. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN42306621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6f47f71bd81b9c06fcb039a11174c26e7cfc484fed39e707e38b909316a0b3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB62249504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8af3bcb733c2cac3e601836e556d5935283aa38495c585b4d15db5576b4366. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAY2262446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9762c51c2f80c099e32d3246dfcb25fb265ca1ce4d13cb4712fcda6dac46bd52. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEN2281417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8b0f80e52d6c3fa9ca2e1360ef5e3bea354fbd52eaf03071d6a7cc3b27fd25. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN72213812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b0ced0923a1cb878c066faabeb97046da6397275002af96f15f1c620d11ed1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZQAY2417673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c475324e0b473bda1bf16b48def86a8ede982202bc71c7becd1905aee32737. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTLA2578882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d439de75a2f5dbf74af862ad5fe3f8f37f290f34ba2bb4e2b6c8e8e6107ae5. 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/QZTLA2597977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80787d247195ff6ce2cbf4c22bf09a8c6cdfaffd9c75ea1026b5f9c63ac567ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTLA2510207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c43f3eae308486afcebe47296130bc935d5fffac99c80376cff1d6df672c93c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTLA2580747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66985c90ba62f206e153f4c310bf9862e8b5443e5c06fe5045895f4705698219. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZSYP2454678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2ccf4a6a8ca418af14fbac0f18cba7900a7b426a574c9e7c63ef1080e06260. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS7J2435225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc9547ba9acf0bc8ec47d3aed7f6f58b746f53c6d60b31ee1d01c57b452931d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS7J2479001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c820f7fb2b52e295a665020025fc989f2221342f11dceb0e95bbb67c1c5438. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTBE2488706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666d8b3807fcf131386e03e6be134c870bf8844505b350c6c215b1bc78ef4b1f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTB72409232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eedb7da5a99d2d5c930898a20c000ace66ca38ffee062714999c50a81f30848. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWZ2450058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e2ce7a859fbf5326a6ac8edc1cf102a7f8e17d6900206b5433824cfd311742. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWZ2452676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014bc22bd918cf983c30a15d22cb11f6e479427c5741ef0908162996b121e435. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6G2516548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089d1a8355b836c4cd5bfa3e9f6ab682832742ee1e31cce628fc75bd29035972. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZQAY2596980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be826601796203ddc44d4b59191d24f8d2af8c2b116853d26741325c9c05679. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZQAY2596781.