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 0xf65a5e9e94762dc444b368afcbcca0570a4d2c34ddc4f6e3353c6eaae5b632ff. 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/ae25501c-8a0c-4600-a2b2-beca26f8f7bd.json and https://artists.proofprofile.net/proofs/artist/ae25501c-8a0c-4600-a2b2-beca26f8f7bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Joey's Nigunim: Spontaneous Jewish Choir
Joey's Nigunim Volume II, Transformation of a Nigun
Joey's Nigunim, Vol. III: Live in the Choir Loft
Mozi's Nigun / Ana B'choakh (Kabbalat Shabbat)
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 0x71c1586ae1478e967699864c4b6c837f79196cee1cbb117b6ff3768418c62373. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:58:34Z), 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/USHM81448112.
Lincoln's Nigun / Yamin U'smol (Kabbalat Shabbat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686ac476deeb71896d4f7f1a9afa21c6d4620841ef270af7bb23084409848bb6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM81448113.
Nigunim, Vol. V: Songs from the City of Brotherly Love
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda62490abb54b0a57512a03cc5ddeea05c93a678fbe90e18712c378bdbdaea6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM21657395.
Nigunim, Vol. VI: By the Waters of Babylon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f231047678d5b9566d7e19d0a35a8b78632009937d5c49183cf598907820f9. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USDY41785898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744b1e310f58242e3556f427bd5812fbab48b6f1aa6b201780732840ffd44e04. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:35:33Z), 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/USDY41785901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd92bde3488c90b2317a5c9ab55c54eaf4da72fbb07ff99feeeb40aaafd59bfe. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:16:40Z), 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/QMAAK1978945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9ad45fba0d4e73a9a4339d1cfff70b20ce9158b1e301206bb11cf8392dcf99. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMAAK1978946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3ae07118734aa6f699f8b9b55b69e971ffd245662670a2b68b5bd9937de41a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMAAK1978948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e19760d4be011e1203dbb307d456f9ed28fe599fd68d4dc38a5731520a2001. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QMAAK1978949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76351436c89ac029865a35a8815c6c98aa7b4d36af4760f739dd387a61c2085. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:34Z), 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/QZHN52501731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101f6a7ba58a02cf9df2af618040096b23c4c534952cec4d0f97e3c8fb692191. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:57Z), 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/QZHN52501732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342e5ef3d280c2309e0b8ec19abefb598e03b29443713691b62b049d20bc51e0. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZHN52501733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903e79a7d1bafeac5fa9e700fecb8b43ad03a5805444baf9864cb84cc08b6705. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:55Z), 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/QZHN52501734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a8503c69ac702ac015bed3b066840eff7b4602fcf2f509b3dcadd8894c6a1f. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZHN52501735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af0a619ac6b731ccfbd7deef1800829365e237ccbdf7e3b25bfd4c35a8fe5a9. 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/QZHN52501736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2c8e286f2e67aeb697ad66299458ff8c5dc784ed5052965c197789f3814129. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHN52501737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cd18353e5febaaf9b580c2aac641c21e72b6fee92fb29de0885160efb90e29. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN52501738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65f7f24e5dd308a0fd291e9e1ce9105abc9b8573b46488723ab68d0d146778d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:43:15Z), 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/QZHN52501739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681b5c4b64f414a7ca83bda2b8dfe22c53f663cdb198c047cf7476a87ee57345. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHN52501740.