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 0x00823c2718aeb066276d0a5443fad50c7fa9c8626ccae78de8b155d865510666. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c953a6c6-ffcd-4590-8596-c281a1348d0e.json and https://artists.proofprofile.net/proofs/artist/c953a6c6-ffcd-4590-8596-c281a1348d0e.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 0xab72b9cce9677995c057bad435e5232a81a175700b88e96f21558441caf5e7bf. 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/QZ8LD1950016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb1d147af074167c65bf7b929970067c0b3a64bb582239b46b7a60a76113865. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:49:36Z), 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/QZHNC1985892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55673b2bea2abf56839fe73a30e18bd09e14e331f1dec800e8081cdb4c3d8bb7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:33:30Z), 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/QZFZ32029611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9ccc7c9a70f937cf40d59cf13c026c3f8235bff8785c22e00316ca719443ee. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:22:13Z), 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/QT4K52513911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11431a1da191bcd684a4eda91eba3769ff6933cb51dfec096924107ae4c0d5a. 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/CA5KR1939187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6365f90fba9b604562e0f5c7a50b3193030c1917b17970d3ec6e049c2550a3eb. 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/CA5KR1939162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35fbb3d70e7d34d7333e1312c6ccbec442db54373a077b3a31ad55e7e1f5050. 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/TCADX1875619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab273c04b6782429deecaacdf3d21d43ffa79c09544369825ccb2d1e8f9ddf. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USUYG1389689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc913b0b2844825dd711e95f8f799d8cd1fb65507e3ae5045ab95478b76895779. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUYG1389703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67cb3e0bb4cbaed41b29afd2120752ff012ce378f95cf48d8657a93fdb6e513. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USUYG1389705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663d0066b3503680143c3a9f03937893e20bbde54ded6185a91461f98755418c. 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/US39N1900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589ff075307dcbd8b971986ee6e9c7b91f18704a764d3ed5723af8bec783f96e. 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/US39N1900101.
Every Nigga (feat. Rucci, 1takejay, Kalan.FrFr, Lil Deuce, AzSwaye, Blackk & 1takequan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7ff52c735581f37f1a876e3a7b5c08fb95da80fe75f4c145dd27ade3a3da04. 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/US39N1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754f5af3ceedbefea4fcf1a61c262f81676497aaf175ce703ade6bf5ed5d6378. 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/QZHN31956951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc355152b9d3ff0cbc4380db68184e5812b93800fdec89404cbf71c78f3734302. 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/QZPEW2452194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1690d9f6253ea6361c418d99aac982b28f1a96b88b8a7acb4dde8885a5935e69. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:19:04Z), 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/USUYG1387855.
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