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 0x1eb7194bd08de2c365167c0974b1738ec582af80aaa2fdd2307234a2e271ef37. 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/77dc8f78-0801-4319-bc79-068656311ffe.json and https://artists.proofprofile.net/proofs/artist/77dc8f78-0801-4319-bc79-068656311ffe.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 0xb2b83c9cbf30879b9108398b4079c1210439ae91c92d8c0a603a297d2374f843. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GBKQU1947864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3f9572c450e0b3877c10292b25467fc86785173f4a0c2f4ca80e67574e2d5b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBKQU1947865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7b636d3bf6f3250ac0c8e2d29cc7b7514ebd3698a680663050e94968cd394a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBLV61911478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5c3d668e820c0fb33f7069a7ac0eb7c3b0b915cd9f85ae6cc8c290b7b1137b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLV61921405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cc4b617a6954a062c6b2be2ee9ae765ba8da8675c13f46e7bdeea9b38ce420. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:26:17Z), 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/GBKQU2088698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c17ecb337e05eec6c15567a48711f6cf20385d6b549437495e482f77efccfff. 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/UKR6V2074005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305ded8f854fb844958779fe9c2df8d1c483741b85b0b5961f4b1de47506c013. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SIB152000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb36ff01761a5fe365f99276c661af8d4f3533d8fc6d366097460e00cac5754e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBKQU2107881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a37db3b11bfdd1a1d2531b54a5cc7ca4fceee0ec41566e3497cfd15ce1bab6d. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/GBKQU2107882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd33244da8f5453b63ccfd1f5192090891358dd8b258679bcf2ee1dc8beb801. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBKQU2152417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd4491b534d239daacf381c65efe4a5c6504bb06a65fe1c65119db9f258fe4a. 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/FRX452172382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaede7559e7407261ad5106dcd5147a237e05edee582f4cd8f06e8edc3caaca2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX452172383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb7425718c34e06647e3b343a0ab5db8af0e6df9f84cd8cd6a1bf15cc675846. 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/GBKQU2312049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae9e8459a1fd45632f0fa85886717b5f07e9f0405f6cec65903a11c1435b898. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBKQU2312051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278c5aea762d79a7172c870637b8702d13ad9687eb405a5b4a4016116063c515. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/US38Y2312713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334b8b8e0d758822adb9b30bc9cdcdb06edf6b9b2f669f6f65ec09a8b75babe3. 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/USA2P2438661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba483ba9acd28480e39d655fd2211dbced2a924f5f41a1e7bd25741d914d239e. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/USA2P2438662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5162b622cb729828dc1a3a91f7ffd81190e3759bd3e1cd35646368e02e6fd53. 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/SIB152200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21c12120bcdcbe7899c110757a621e6f2fadde4a587197d93cefe8a98efe86c. 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/USA2P2355948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9cff8f6fa8b366f141d269aaabd9b6a47f3f29736fdf7d3cdf315299256581. 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/USA2P2355949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b678959fc5a2f4b65b38cd14d49e5488436062c86d49c7899418b7793670cc. 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/USA2P2469809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b678959fc5a2f4b65b38cd14d49e5488436062c86d49c7899418b7793670cc. 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/USA2P2469809.
New Generation - (Space 92 Remix) [Extended Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b36a8b0e6d8b8bc01272f275101e50785dbf1b880b297063ad5b195deb9427a. 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/GBUR62000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6719845563220383052e26b4da50ba29aa70b404465000e5c2dcbeb05f3f040. 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/GBKQU2407933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55129ac0e549e9b8d99dbeab089361c89bb7b4fa4b14c7a17b1f2921d9970dd8. 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/GBJX32166003.