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 0xfa78a9fe85bb624540e9c06d52d7631ff1c58cdf008352c8b11df9d785926936. 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/67e2d499-c95b-4723-9f51-e54f8f3dc452.json and https://artists.proofprofile.net/proofs/artist/67e2d499-c95b-4723-9f51-e54f8f3dc452.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 0xeabba227ccc4b4d87f2064d4314a3c5efa3fe900aa0324590e08d4cb7dd02820. 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/GX5MX2317795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e50773f9aa8a8c05d66657864be913bcb4237772991533ae332ff7e6e4ce8e6. 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/QZSME2301084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb21922b3a7808198a7bf58617a30fec5c43a7a3c87168828ed1e6ae17b85e33. 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/QZSME2301082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd912937b073c9abf68bef3f0cbb9764419ff89b4fe7c0c3d81985ac739aa966. 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/QZSME2301081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62b2820ed874f2d5b5532c118313f82687d7ff8e1978a9d46a5fffea41226fa. 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/QZSME2301066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eada4901cc996ca9c8015eeeac36af24d02c95c9aaf62fb1618b615c4190b2. 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/GBKQU2309240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bf11783257f1f0be5da06f6fc156d9080ef7149afed07ee36c4306c187a0af. 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/GBKQU2309241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212e7b484ca68720dc95bef35a5a18eb33891348c5ab2cefeab9c15a70062ad0. 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/QMPKX1775425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dda75d75008f53f235bd12c5ac8a815ecf9bdcc000376564b9a97393de25c7. 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/BXU2C2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fd890ae5a2ae5220242d111d411d22dbd05d81856b1d5560fab032f73f091f. 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/BXU2C2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb540465600ca17678d16e6d35971ae87d2e10d354e4e3b15726f69d8842ae6b. 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/BXU2C2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b99c59ae170bdda532d797c0bbdc6e7fcc34573edcec7e048a17fce0521c9f. 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/GBKQU2052287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd411cf250dfcdfff5801f47bb72ee4c2f592c9420a3dba320ba83223360f237a. 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/US83Z2013086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb2809f03cf13de8d6a30a4a2c40edfb88c17ad27d233537e69192cd595e3ee. 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/GBKQU2032787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d0e1f2730a3a740315ac316f74470910908e9da3576622abcbd9ceae9e49f9. 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/BXLKS2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a7bac7e9cfb9deff85730ddcc41157cb8d4bfc5e8a50b04ed822feeac424f2. 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/GX5MX2339378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0307b0e6db1f8c403206c92147c8577f6751ca92c72f3dc5a94066958fa412ce. 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/GBKQU1901646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78bfd9c7926e972d958a53baeb9d3f0ed40f850a377e93abc4833041aaca0ef. 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/GBKQU1901647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb318c545f4972adda0417ba38611bf4e47ae282d5ce52c55b829f4dd51961933. 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/GBKQU1901648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25131e7c1008adf2cbaa5c42c78de88a3699f235a3a597ada0651574134d8703. 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/GBSMU6133670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dab95201bf9d9a7bf68e88496ee1816a547027050493f73c3a5f0b5a3debb60. 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/USLZJ1795958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f21e27efa3d8ab7ae038abf54135340174efb4810833a5783590a114f4f2ea4. 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/GBSMU3901048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2e9b97b891ba338f7093668aa42644f3fc80335c54fd92f7a13b58af357d5c. 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/QZ4JJ1720041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2a34b64db37d394ec6518e73fcb2575badb53334df754b8addf0cf99e8c759. 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/QZS1Z1633494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe155906b5d7fecad5d804328b1ad3344d6976aa066e491ae7d1d70debff511. 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/USLZJ1670356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d7746ec8ee2ea468fddac1be404bdb9e18f0a31bd09c26624eb2398f08c276. 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/GBSMU2322201.
Winter Sunset (feat. Ellie Ka) [Fractal System Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104c00bf06c062fc7f065cb84d263788b24aa54675e13f44040934d07180dfb9. 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/GBSMU2323512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573ebd2ce8c9b12b93b321c4857d8624c478734e5097c0ae79ea435ee72561b4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEH741504004.
This Feeling - FractaLL and Rocksted Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9bedccfdf7226c35dc1038a0cff9e4cd4955ea59dd9166306ab8d35c5db35c. 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/NLRD52264075.