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 0x77501a4c935aa344e0afc06a3b8f8b61df25a0c3c4ce227a7cc035da4b3e7a94. 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/6f93bca4-65f9-440c-8e45-4e68efbac7b0.json and https://artists.proofprofile.net/proofs/artist/6f93bca4-65f9-440c-8e45-4e68efbac7b0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65b2479025c15cf693b22769dfa623d8017a434bda632b65298ea2a1c3d226d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMSDU1500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d55903f3ef64873627f16b7b725dd44f3b76c328909dad2c25c0ef8a3ff005. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMSDU1500181.
Closer (feat. ASTR) [Rytmeklubben Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50360b4af6956eabca6b86ff20f0db48b46f522f701ef2696a0d19753e5e980b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:22:38Z), 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/QMSDU1600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50360b4af6956eabca6b86ff20f0db48b46f522f701ef2696a0d19753e5e980b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QMSDU1600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe0d08e3f72723c1663a5b69ef7c55c290eea62143acb53729c7614e8c42ef8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMSDU1700218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9a935996cb19333ff41944e05b3ddffc610239c5a11d0cb7deb8665b50afc9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMSDU1700232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370eb2510adabe0a9741cb657ce511b662751dba8b47769ff88249f080c4f546. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:47:57Z), 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/QMSDU1700229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4b298ee03eda02f76b6088778f545bae8e8bdfe6070d7cfa51f93a11b7cd18. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMSDU1700233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cd42a9b303c698bafed3d7d511f80421b6df11dc952366bf2d832d33c20f41. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMSDU1700234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcb7611fc88a5787fc917876bc28ff4d0817eddb06d06c4eeba7b17f2f59ed7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:37:08Z), 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/QMSDU2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcb7611fc88a5787fc917876bc28ff4d0817eddb06d06c4eeba7b17f2f59ed7. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QMSDU2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98259b2bb8dca026eae805a147f9e7710a17752ebf063f483e54bbcf934a28dc. 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/DKAZA1700166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc4962032c83a1b5cf0da7975cd757f3ae11141c27ba0110594616fbbe2ebc3. 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/FRD9M2100590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454b77b7bf07fd8205b476d431306860b0e5455f235a95604c6d5116e1ee1514. 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/USZ4V1700242.
F Dat (feat. Purple) - Djemba Djemba & Hoodboi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f6b095f51b83854254cd9bd76fe6d6e3f62af8b529c14fd2239c7a127e8090. 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/USZ4V1300287.
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 0xc1f9a9994c92245d2d1cfb5fb91c3a923b0988174f2eb635a5bd8b05b9fd19c7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USWB12000781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39ee607e7aa6c9c5d4eb837cad82ca1beba1c12cb478b9d4bc76a6e4c0b0ab8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBJAJ2000415.