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 0x7dc5cc4233a09ea72b8624519a34620814500ceac52079a872bf5047aff8cc3e. 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/942df6ba-8587-4e09-80a0-43ba0de1d6e8.json and https://artists.proofprofile.net/proofs/artist/942df6ba-8587-4e09-80a0-43ba0de1d6e8.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 0xbb565a2c1b634b2c309fc6a5b294b240f6c572563652f780a140a093538373f5. 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/DEQ022116177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0be619ad1307c97ad935c5d6cd7d903b47ba7128407db0666c7830e8cbae62. 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/DEQ022116178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea1be9d48bec74778d3974cdc7347fbfdc917d74ed480d90bee8a6422fd8a87. 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/DEQ022116179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbe629b730eb8f9139632317c2081a428a7482af4c04c74c09ff53b8300b234. 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/DEQ022113239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04cef5aa84107bbe1ea579345450c112895d93fff22629001c01e67bff6a68a. 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/DEQ022116180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95216d83ff36e880308f62a3cf3a567a3089f29675df7a74ef0d2ed001970208. 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/DEQ022107699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896674372be24417658dc38c1bedaa31e5b664b3f25e85e2cb00d2a11b6a2557. 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/GBEWA1910050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d32ec920d4cbc9cafca276082df89836446c08aa79f67aea2195378322e500. 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/DECC29200600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafbb7af0c19992154227e756cafc017d385f8d15d8113ba24481593ed1b0473. 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/GBENL1802409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243737c39e77d8718f61be677f432e1ddd929d46ffc09fe8543853705ee322fe. 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/GBKQU2335194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5c53914963148f48111cab7e22bd3eb8679130346303df879c1aa95b964146. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DELV41900572.
Trans Fatty Acid - Kruder & Dorfmeister Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd1b64a413aa7b7ac58de2ba55064083110ea1c43d6efcb43429df53d19fc0b. 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/GBF089800359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307cc7c8f4f7edf9d1eba62adf3af67e333273791ab5e3efa7a4282bdf764f04. 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/DEUM71501923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78618804a7b81241bffb3c5ac90913278ee2fd5b4de565a346235a44b7da8c04. 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/GBF080300488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa563649d423ea8fc6d2e980cec5c253c641bab5c69b0e759bc05436b4b14cf4b. 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/DEUM71710056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6cc7bbac1edab64c8123ff85d1cd859377e325ed29f3cb128a8a2c252b444e. 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/DEN962002950.
Lo, the full, final sacrifice, Op. 26: Amen - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415ad5ee299d44999807efee3a6a3051707976cf7e3e3888cc5915ee9f0551b3. 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/GBF071503830.
To The Stars - Dragonheart/Soundtrack Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ac496f3f1b94e7fab63009ea71c7a16d9b68f4e660b7366fba914c62001d7f. 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/USMC19649047.
Limu, limu, lima (Arr. Schindler for Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb1020919974867cae3d6c3a34ee86b25580d6c6b3918315b81c653a9038fe1. 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/DEN961802140.
Opening Titles - From "The Chronicles of Narnia: The Voyage of the Dawn Treader"/Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd036266d488c4ef1ca7397597a8ac3f6f3c95e1520c58a27a196a89eaedb59e2. 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/USFM91000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bca85e5a585417a2ccd71be958b899cc5ef4ee9b56bb8ab215d2cda67bbbf7d. 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/QMCXZ2000244.
Duneagle - From “Downton Abbey” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec36bb87481a28e1fc84beec5ae6d401d26471959d85fc2cc957b5e83968a397. 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/GBUM71507219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285442a3538d6e05bc2d6aebe797fdb53e538923688b974a89248bbc32cbaa7b. 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/DEN960432332.
Sonata for 2 Pianos in D Major, K. 448: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba9bf69cded86d8820e7d03858e75b7b9fcaf972d992ba5fc828e6b726cf93c. 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/NLA507610602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6385ddb2c414d388e6d60ada663af0f41cd8c086218a9d0c6b4fa51071c4437. 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/DEN961730606.
L'Arlésienne Suite No. 2 (Arr. Guiraud): III. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee16117443cb87186a83453e78ae0f85d138e0fb8f7e08c84f537d4ec8a29b9f. 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/GBF078611343.
Suite from The Theory of Everything: IV. Forces of Attraction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9afe7e38eaba5c08b9a0597caf00d50842d3cd8e71c0c75ce316270ba580b1. 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/DEN962301204.
Nerevar Rising - From "The Elder Scrolls III: Morrowind"
Czech National Symphony Orchestra, Prague
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90d89488462b631222a12462926c84efcb7c31ba133afecf016d52fbef096ad. 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/GBF071500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf7f326f4754bc39c5bf889aa618509f185b5d1aefc815fe725823397bbf4c8. 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/DEXO42345744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4e86d22488fb8a7c4a99c3d5e7ee09d2fb795a3f6e4dbc68715dd135462472. 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/DEXO32235293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc581679f30ddad396a072956f3342676e87aec1d81ab8294ee4c23056708b8ae. 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/QMFMF2104241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572c1718588ecac8b0d8462a932e1eca79dfc1b99575544ef740c311de06a9b2. 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/DEUM72004794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56202c5efa6557cd57304145a1c40e38eb2f1534628672a6dd0d89097c01b305. 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/DEUM72000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a380111da03f0e1e44312ef06eef1731799be4cf86595791dc72cc6cb499ee. 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/DEUM71903807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9e16bce5bda5f5a38e278d46beda350a46c83828341ca195f7cc8a02f5b7f6. 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/DEUM71804774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302b7bdb782829b0157aa0167f6d11d2790bb8dc09e86ed0c4f3dcd7ffb2e798. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBKQU2486621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf101e8add84620ed6a266deb7c063dfe9379fb2e169df6db7028522651697268. 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/QZA742204364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee6d8efbfb08c87b0edcd0bbf2e0e632565bdd1ca4fee84e964c3c43a08eb6a. 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/DEUM72006894.