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 0x68456139ea7b68d2a52fd70f6b212f2e08d5c6c0478f441747170a399fc561d9. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef1900b1-1ee7-42fb-bcfe-b207ff99b435.json and https://artists.proofprofile.net/proofs/artist/ef1900b1-1ee7-42fb-bcfe-b207ff99b435.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 0x991423eb28aebf24d1b3f166eed949a153d42b3ec84d8e438081f7487ad828b9. 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/QZHCR2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823d9a8e6136968c5e396ae05f1530686a493c31d15433d660979854fd126b05. 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/QZHCR2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0916757c759ee4c715ce93d4deb4a70329c71a04eaaeb82512887a552b7ae181. 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/QZHCR2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f60ea7aabc0def4e976794840ff2407901b0e629471d6686ab35167d58168d. 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/QZHCR2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5950a2916900e9c7f8bb0450b9323bc5f40d4e918be5f17e3451404250f0e. 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/QZHCR2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f0eb30735c02c9cdc8a368514a1a3b237734184f837d196dd98bb78c5d9d07. 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/QZHCR2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc44a433d367a7fec9fa57b0b0b9716135584fdb9809230efb9c01bd8e3faa18. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHCR2000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ce7dab87d04d9f623aa63f60739abd825cca9c3e807e9009bc342f7dd9f0b8. 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/QZHCR2000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd534ae6e81e888896918233f03aa825215731e30fabca7119a9e503c84c5ebda. 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/QZHCR2000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87cae20bd901b46d23d674bb7ff4f4d4cdb5c85874af923831a4f3f658e6397. 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/QZHCR2000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1667eb333c8289af44f5cd9e81d8b16fce8ace73241fe317bbe1a4009b1c7b. 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/QZHCR2000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90fef9417650c0e247b8eb14c5797a82da2ff3e26340cec2ab4010a289c0025. 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/QZHCR2000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e494ac60ba78fc7cb9537ebc33c0b8ccbe426fc34f36a9043c3a1b74ad8f92. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:36:43Z), 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/QZHCR2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747eeda7595fb9908974e8aea5939a4f53f0e6a3be49e6783ec7441558da7e95. 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/QZHCR2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8114a94f61b80b5e16358ac51488537adce209e30eadc9fca25549041074987a. 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/QZHCR2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f286e1f513ff23c2a89f462779c74b0590817251090c1b47728dbf09f6c3d4d. 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/QZHCR2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea5f93df31d096e3cb683d46e5508a5043998cb3257a5e2fd1da5aa37390e51. 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/QZHCR2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6698fbc071de9a616df9946be7914359d629ba2b120fb9bcd247ec6d46b431. 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/QZHCR2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4556721c08efc16f5ed04a9c14ee5dcb94cf903df6ed414c0a07afa5cdd2a1a8. 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/US3GD1400917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78027e4b30a0c968b797509fbd1ddea15fce1d6e658e8bf39e92d0dfed02b21. 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/US3GD1400918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0858a168cef463705b3b80e1d714174beab45be372f619fc6a99165814079941. 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/US3GD1400922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d03d7aa299de31d75b2c20e753d6dd2f4e9e949e04b8afdf07c2b49fe4ac15. 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/US3GD1400933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632de9be6488d1fb8791107e31e526d7692c1c7c804836310b3c2a25e898b048. 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/GBKPL2001501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e058e967e32f72b76176aec6024040bd2f3a4b028e8c2de644cb9f236e6b273. 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/QMPKX1619997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d42247a9f597c206f7962669db83dd28efaca640c2e87ab7ed0b75256a9f80d. 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/CA5KR1540385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319321199367b79013643e99ff4646aa8dba88b6c1eee5002cf08c6e0c5fc035. 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/CA5KR1540386.
Lorde of Legions (feat. Jahlil Beats) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa642acb52ca1f7ac3bd143aafe9358f7b74988218a3e82edbaf014320172d781. 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/USDM31683401.
Hop Out Da Phantom (feat. Jahlil Beats) - ROARY Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ec25e14da453d755b8114d35f16695475fe46c371d8e3ac0f11be3e6688da9. 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/USDM31687901.