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 0x376fa7219de864d96435b331dc671d63d7969e72ad4b0701ad2140ca6ce8d72d. 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/4f357656-eacf-469c-8351-440e0697e88c.json and https://artists.proofprofile.net/proofs/artist/4f357656-eacf-469c-8351-440e0697e88c.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 0xd871e39fd7a5e5c59cfca828435607fe3f5adf02eac6c277068c061e0dce9ad4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZA4T1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32657e4ed5402e7ebbd02acb84c4fbfcb3163765bf4390ab168fedbbd286ecd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZA4T1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac267e1c4fa135b110f659d3a56d716180339e612ac63bacda486ff1cc8c4f41. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZA4T1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a546167f285b0a65470405523f59f7dc4ae7dac2b23429c3d353911efdf286. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZA4T1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d80897cdb800cbdb86807105ac4d706276284457295702fa5bc2212cd7d5872. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZA4T1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8718dce3af0cb18dd87c7814fda2910e1a67e6a2490e95b947e145b40c73fc. 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/TCAFW2141834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3771220e1f2f76f0ea3329b15c3bb34371376a7b37d18e98281eab13e8109781. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAFW2141869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc312ff74ff48ce6c91ee81d457a36a62ae29b3319c1a06e3be3ab6e91605a794. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCAFW2141891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5bc1a7feeb8b1f558f638cca8d908d8863afc667300b1022154c3fd3b3c41b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAFW2141910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cd49e5bc4fc7433b5a6778ae9aa56cb8e7c9c0048fcc8497dabecc8ba97b6e. 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/TCACU1683717.
Only Right (feat. YG, Joe Moses & TeeCee4800)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d027ed6275d2737eacfb81b7fd0f0b7039bcb703ba4b44a32a4fffe83a4fea. 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/USAT21501411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d027ed6275d2737eacfb81b7fd0f0b7039bcb703ba4b44a32a4fffe83a4fea. 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/USAT21501411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36800c01b4aebe85cc4c59457b1f27912b5edff1c774f593d9c5f2c3644ddc7. 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/QMJMT1600986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc3a270d49adbc2d826ad066b066caa1a494b61d85a40a35835295a37f83761. 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/TCADK1772349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0face10a297a4de2c6486b9aa6dde4871ecf511e4dd72f2b8028c65d8904b7cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM71416470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8c2f84375d6b38d4672976e4b23a015a128ffddc3c53c916d7a712f043e67c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TLREW2231746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e6319f8b9483ed11e62db900c74b49c2dffd0e12bd4db001d1873ede2cd508. 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/TLREW2231749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee43be3a57fbcf3b903bf2bb030c4a45ee197713e0fcc77736bb887638c3edf. 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/USUYG1323563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8586a8b371a62be562e35a5fdec8bcfd78b6d93c951d49d6be2a82c956fd77. 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/USUYG1433867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283dfec5a4419849b5a4b8f6cd7e66d1ecf7054526161df4eb02e27bcd368cca. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZMER2451159.
Wit tha Shyt (feat. Tee Cee 4800 & Reem Riches)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81c5e357afbdecfcfc63f8504a51d13d939894981171ad85072b520aef19f56. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCACL1611096.