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 0x0deba4e278ec2bae2f62e387e1cbfb3bba6e8abe1a7eddad1cf7b9986881a6e0. 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/27ccbee5-bf0e-4a0c-bb8e-3fbf67308a9c.json and https://artists.proofprofile.net/proofs/artist/27ccbee5-bf0e-4a0c-bb8e-3fbf67308a9c.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 0xfea4ec18dd77c0884ab8a8e3cc7e5cd757bef7b98943b9ebc127d52223af2595. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/UST8K1689139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdec3c8759eeac3222e3e7f50fc5a8751d3a4f184a127cb162324e0934c3da61. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZFYX1926720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b0ce8f5904faf933d6cde40b8aca97ce710607070c2fa05d9252f9fa0c5cc. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLRD52017549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d594239df92235e5a47ff39f964419ee3baab8fa8c4dce82052746804fabf5d. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/NLRD52017558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc94fd44fb9ffcf07ae6ab1f00870f7a7665f7dd26113b18de8184565ae71c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NLRD52017556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066f685428b628eab0c96436f89d4cbc08aad98ccef9e7dc48f25ea0a60fca9f. 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/NLRD52269345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ce6b08fc06cf18c3f822756eaaaf19685bbb1e92701e52a74cad5caaf31274. 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/NLRD52269346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151b1c921f8a23915e8b3c056d13268951b828bd7cf45a04891f40b5211976a5. 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/NLRD52269348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45361368ff0ce28ce1b11783e72194e03bccef029379cba96f04bcdc43191442. 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/NLRD52269349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411397995eb085a3b2a187338bfdeaff6a6e6cc2f458988473b3a56a740bdd94. 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/NLRD52269350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148c66b631f50acb2cf9a9cd102fc9f4a2ad12326cfa62914a34c43c4bf49870. 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/NLRD52269351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129a5afb488f984d854aab47a0002c585492e36f17f29b0168949760d50dcaaf. 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/NLRD52269353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952ce102fdc23a5348a82717f4bb0624dc0bad771e7d025238e5c011f611f262. 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/NLRD52269356.
Teenage Dirtbag - Acoustic Covers Versions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecad27b50570b7450213fe0ea49ebc5d5bd48354137a593e5559b8b2cecd6ab. 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/NLRD52269358.
Until I Found You - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b817277c5df3d2cd995c23ad89d17582d0f0505987ed68f0a2369a2fa035e5c. 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/NLRD52269359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b844fb63cfae164b47a2e8ade73e0b7245b46f30a99f72ae7da10c3114511b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLRD52083259.
Baby Don't Hurt Me - Acoustic Covers Versions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcd413445b61ff6effbb5ea9e73ad9ee3c2c1656f43726444c41eae6ebddd13. 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/NLRD52269344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066f685428b628eab0c96436f89d4cbc08aad98ccef9e7dc48f25ea0a60fca9f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLRD52269345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513fa4f6df6f35fd1ca29d4c8be9fc99050b016dc927ccc2a5990adbdfa869ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLRD52269347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151b1c921f8a23915e8b3c056d13268951b828bd7cf45a04891f40b5211976a5. 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/NLRD52269348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45361368ff0ce28ce1b11783e72194e03bccef029379cba96f04bcdc43191442. 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/NLRD52269349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411397995eb085a3b2a187338bfdeaff6a6e6cc2f458988473b3a56a740bdd94. 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/NLRD52269350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148c66b631f50acb2cf9a9cd102fc9f4a2ad12326cfa62914a34c43c4bf49870. 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/NLRD52269351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cc4654050d1f475cf273c32886c16a5cf29a65038d8ec8e9a3da7177e95f10. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:54Z), 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/NLRD52269352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129a5afb488f984d854aab47a0002c585492e36f17f29b0168949760d50dcaaf. 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/NLRD52269353.
Sex on Fire - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6616592574a5453706a9ab73ff9d925888f0fd299f088c2c191161c4435b1f6. 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/NLRD52269354.
Somewhere Only We Know - Acoustic Covers Versions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067aa1eba94088c00afbd51bc4cb440ca42d08efb8deca5452d75b67f567be27. 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/NLRD52269355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952ce102fdc23a5348a82717f4bb0624dc0bad771e7d025238e5c011f611f262. 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/NLRD52269356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2054667d8a81faca71a059b3edc1fb545a5bf77629bc2e0124d5e2171b47490. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:26Z), 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/NLRD52269357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecad27b50570b7450213fe0ea49ebc5d5bd48354137a593e5559b8b2cecd6ab. 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/NLRD52269358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b817277c5df3d2cd995c23ad89d17582d0f0505987ed68f0a2369a2fa035e5c. 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/NLRD52269359.
Every Breath You Take (Chilly Louis Remix)