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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164a94d0ff472613c19f2bcfff6d42c7f6303878ac1912c4e5425e09d08476d3. 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/42915261-c2cd-447f-ab22-2b3b4f23be06.json and https://artists.proofprofile.net/proofs/artist/42915261-c2cd-447f-ab22-2b3b4f23be06.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3800043a1458d03848e6349e5448861b16dbaa1e9e00f13bb263350fb4cf95. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIPT61400007.
Kansan Laulut - Niin kauan minä tramppaan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd74903e8f8a550b9c287c1d31414142e62e6823ff6f7dd68df21fca2ecc80c4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIPT60500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d24012e78b3f02f13713ef6f2da1de720a8e1f53a4ec905d6894f8598f79f4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FIPT60300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc638fede5347b508f14048b19a3707014f9f64612448cb17d1fbc30d8273fcbb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIPT60500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331645e46207bded30b3e1581f8125f172ae6a07f1282f6a788acc14338294ea. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FIPT60500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb23177915c9228b897ecc5d008665e98bcd56172c9756e75b3a1360b8c16156. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIPT60500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1eeaf7b62aa520a5f8557f1b06e180fe3d9c306826cba795342e13fb7bd359. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FIPT60500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af0515fb81d8634dea2604f487f53dd210fe6c16ee3d3c986d94de618e79e57. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FIPT60500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bbff6eba9ff26f2e26b9ddc8af3a6d990932c4057fb2ab2b646c00e3e2b783. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIPT60500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52b93ec0080fccd01e1ac90e34ae5c1825f3f81492ccdad4386639a7f7b3b48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIPT60300179.
Kullan ylistys (Minun kultani kaunis on)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfd7cb6d0cdffacd834a0a0d428fe2f1a2865c8b7e40ec28ed2e8e6e1da74f3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIPT60500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0898eab5cd86f6cf3617c4153d07046cf6ae9be471feb26a66b73a9531c246a7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FIPT60500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17622ef5676d8960ef21a98a689266b4889c2fc66b36ce197bcc8b88599e622. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIPT60500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd52adb4537374582fb58522fa8cd3387718207898c72905ec99b72cd467a3c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FIPT60500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0c8b0efe60f8c95803928d9c1f24fb422bbcd46ffd209a3502437f7817b004. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIKF21400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0453f54be1486ab31733e4ef7bd4ebc947910da4c053a50d4e8869275066a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIPT61000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287ba813fbbdbd7a9d334a898070e20bebd59eb039236f749ca4a946a73af356. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIPT61400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4db752f55cf4e380ed35ab3ef6683deeab64416eede0379f958a5f14935eff5. 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/FISPN9600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473c5201d630be3a8cb62541e358261e4f9b0d10ca795fc9eb71c3c0da9a757d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FIKFP0000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0471a0a9b97e3cd14c31378bf692e331af87f79707c3ac1a07e76f23ae4b4e7a. 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/FIKFP0000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a26abfd59766dbccd858f5835f72312290796d706404545f0a323df0544a79. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FISAT9800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab460880599b6cbc4b055c3eece2ab5534ae82afd264e3b4e476fe95d112ee43. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FISAT9900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb253cf6bbdaf06ebd803864e5a842346b9d04fad4a2d237e9b7fef657e1efa7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FISAT0000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67123d8458da1b5b46edfa31d5d6c181ceaaa36d856be3c5113355bff6d302a. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FISAT0000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb5cf71ac3cff977beb502baf72841bba7f9d2785e292c5295e412179b34dcf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FISAT0000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80abd2cd1f181375bbf83fd96fe209d2c8cf15345ff28f907da5ef708593ae7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FISPN9700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9ae03c42555212eda211dae64138058f292fc602a116bc29a16488e2952a45. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FISPN9600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a200b7f44f7aed7b9a1a6094d2176b8fd93bacbcd50364fd29d7f1cdef8fe2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FISPN9500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5181bf16df51749c09f0f0ea2fa107dda2620eecc69907c052815106882036d. 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/FISAT9600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7592f41d128056fcd82ebc1010205c15f80258cdc7052add8ef4b5a8cd28ea1b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FISPN9500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3088fbdcdd53eab56666789d06861e526952165bce471227d1514cc3a06dc99. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FISPN9700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c4f48298c879c6f33de16cfca0a41e92fbf742a84c422ad6f1bbfe0fc7a8a3. 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/FIPT60200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d74012478e3abdb9f33b0c4945a1d628687ca6bf17e43a215eec4643991be3. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FISAT9800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcd715afacf51e2055a0f4e947fa27237a81ae8f8ca5b650c15ebe6a9a8ad00. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FISAT0000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3fb8ddbcf4e780f99d38e2e2e0c1644898e6b8f0b03ef4b034be663b3dda62. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FISAT0000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e15fd692754f34b509c8aa9decddbe87f4e3de75a883db0cdfec4348d5d133. 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/FISAT0000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e2ef87bd1a5f0b6473fba58346769533a362790aa493632128f650d0fce213. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIPT62300002.