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 0x04e4545cc4bd29d8dcc4ba058207bcf3b1802e7b13043bc652bf57e874320d70. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33515bfb-2bd5-49fe-a002-d6999170b828.json and https://artists.proofprofile.net/proofs/artist/33515bfb-2bd5-49fe-a002-d6999170b828.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 9, Op. 95: I. Adagio - Allegro Molto
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 0x20c64043a767bb395a85173c2e2835e2d195bab9fec002706b7195b536307cff. 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/FR9W11407776.
Symphony No. 9, Op. 95: III. Scherzo - Molto Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5d2d50b7f123959e0668f3f107d8fe68ebd4072cd20ba6e1b89bbef5a60746. 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/FR9W11407778.
Symphony No. 9, Op. 95: IV. Allegro con Fuoco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bae664141eb93e93552dbb5c7287c6d3610989bc8d118118c6b53e2c01cfc3. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/FR9W11407779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6105d54c1e71c3084c2f691099a656c920c48460fb66ab80ac3806f8a5c49214. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR9W11407782.
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 0x5b2ebe287fdc5c27e75aea9eac0b94f97b76c01f7e88fa5f6849198cbc7baea3. 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/FR6V81396962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db4a8528e7f81cec6d518d0bbb1bb4ddb02cd564e356c0765d72a90734c044a. 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/FR6V81396963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95f557f78a4a2541c5f7eb6824dd7faa6c2b53cf91f0d59032442733ef0a4c4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:38:34Z), 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/FR6V81396966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80b3fe47cfc2d7cf680e07c41a9a33bb129ee197bab802e1547a6aef2f8e8f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6V81396967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876fdd59f4241bec84a6a90761c76d32fd67e14a4624cd0271816d7606db4deb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6V81396968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63241f13625ad6f9b9e2cd57cfe849a0cb9d441608174d043e27fba913562a2b. 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/FR6V81396969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b52688de1720c174f018a7f3a7d544e873363e8a3c8e8347232f49057808dad. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR6V81396970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b4302d07478c5a4bd007b83b68de130738a8cf04e35481edd8df2d5bb4ce93. 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/FR6V81396971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cdd1a49ef4fde0831ff3503050adb41aa1d016b93b500469dfdabfc0d0e07b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6V81396972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fc65c9e5cb8aea1372f6634e3fff029ed46b76eaa1a4b980a106415e2b1eee. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FR6V81396964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f388b9a16d177f0e07d418d323512d2b6cc0266afe5c8cde0db26fcb4a6888. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR6V81396965.
Tapas: Le balbum (L'honneur de ceux qui le font, le bonheur de ceux qui l'ont - Musique du monde et d'ailleurs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3006a9d5b6af41776946bcfc1a0c1b9400681eced6ad9b1e1c6ada3e644ceff6. 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/FR6V81395163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcb095d565cf7be185948dc73a5f6269a25a5c9ebe9823846db61a5c4990e05. 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/FR6V81395164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30299c75d69aefb663fbd93521a358c4552e56a6b51e11ea91cee2c9dd53b39. 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/FR6V81395165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8482cb2b3ccf9e4954204d0c017c99deb56f6a6bc9888d96793781463cf7e7a8. 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/FR6V81395166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c48d39c5bc3d433c25bb74348e7dd82dcbc30276a17952d7a10b94b8691ed. 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/FR6V81395167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80323036f4f75c781f8ebd7635a040e217cb13da06291018b82e5a6796ed94b8. 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/FR6V81395168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7681d82ff702cfb318fafd628a835acc0297070e0cc88c5bd3680bc7175c9e. 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/FR6V81395169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c14fcc76d26d568fc982fb25f4d5189842dac2045657fdd5c2d83c45dd12a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V81395170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9972aa97228a4ed8e081e53f27f88947695cc9e4c72f648b42e6b5c999c1faa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:23:19Z), 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/FR6V81395173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7420b136a88715ae6632aeec417d39aaa27aac553a7fcd5f77c43270bfb63b3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR6V81395174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4800b2751d62427efad8afe67671589af278b06bd615e5430acb5ab8ac0ea574. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR6V81395171.
21 Hungarian Dances, WoO 1: No. 5 in F-Sharp Minor
La Vida Breve: Act II: Danse espagnole No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba30d77aa875f65c31e3336ca75cd94ab1715526140bb26b4e7f48b24c64763. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/ES5301149576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d60cd48270ec69de54553a23e4b5a48eeca9fa5395b34173b77e48c88d56cb. 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/ES5301149587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78bf24f2c0690e8f96e52a73382e2d41e00ac8ede0eefad3a9036a624b234d2. 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/ES5301149609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529576c7e4a2120fd64f449127c45c3a6cc24748210147946a4a418226c0dee7. 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/ES5301149610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177d6f844ffbc33d459bf4811d39810dee228360567f5d2c7fbccf14d3d5130c. 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/ES5301149594.