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 0x227f15faef72120ae5e14cd76432633431473906989052cf3a16410fb2ca76b4. 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/9b3033d8-567b-4a30-b708-cdd5e5ce7d1f.json and https://artists.proofprofile.net/proofs/artist/9b3033d8-567b-4a30-b708-cdd5e5ce7d1f.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 0x6bc3f29de3cd3f9945044872b7b73be33aed321fbef85991033f49fc4ed54369. 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/QZFZ22147593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dda0f5b7b6620f4dd1ad82ae6601fea4a8d7a374860b4cf27a24fea7c0817d. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZPLS2188512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59ace676de853636cc232c416cb3c58c92121903c1ea6e84b2d79e4c1ad3896. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTAS2288119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7db126a83cc13edc06766567e8e17c8f4ff12b14e106a8e92b31dc89f26152. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA2P2341730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66f325c48b4783f7531c5aff5dd878e527d16f28728d7f766af94f635a886d2. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZTAX2235701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4124e31efd815b65cb27349d917a1f7694af81abfca09cc7fc829c0f00fad192. 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/GBLFP2319478.
Closure - Flexulant x BAMBII Remix feat. Rahrah Gabor & Brazy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818efa3df6ff7419cd2e45a780b44252f5fa11177c3ed7125ec0d65cd3964643. 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/GBBPW2300308.
Closure - Flexulant x BAMBII Remix feat. Rahrah Gabor + Brazy
Closure (Flexulant x BAMBII Remix feat. Rahrah Gabor + brazy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818efa3df6ff7419cd2e45a780b44252f5fa11177c3ed7125ec0d65cd3964643. 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/GBBPW2300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7622684103e6afe9ee0c786fe4e33fac46e4bf2f65fdb3ae3a7911074a8cb6be. 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/USUG12200571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf393480672fed9166456ef455d5e712f69aa4ded9d7e07dd93e4eefcded2cc5a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZMEQ2266368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5426457b6cfdcae1b1bb5e622727204446b67f9a9e47e441b86b7652d51a76. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZFYX2252252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8ecf5e12b41039c5c66e54a25538de72ecb91ca9bc95254f654f6649fd7916. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZFYX2252253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045beb49573736ac3ace04b3124f19cf25ffbc4c9068fbff3d803ae13f52f065. 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/QM4TW2387934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045beb49573736ac3ace04b3124f19cf25ffbc4c9068fbff3d803ae13f52f065. 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/QM4TW2387934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b9495a5ddc5fb41594e74dfea0f1e6527b251aa09f3e31f632dcf97b7ae12d. 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/USZ4V2400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eaec1c9aa7a7707d9c34c7a72b61d25d965efb2ca7b671a13457f49c8c6bfe. 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/USZ4V2400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eaec1c9aa7a7707d9c34c7a72b61d25d965efb2ca7b671a13457f49c8c6bfe. 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/USZ4V2400281.
take your vibes and go - Taiki Nulight Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb101f2e36a0ec270b2b8ba377ad28fcd638bae9097acaa2fce689815110ffd9. 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/USZ4V2400432.
take your vibes and go - DJ ADHD & Chloé Robinson Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47f0d308e09d90d8b2d9155461d64f85e61e1affc8d22be46470bb75437f326. 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/USZ4V2400431.
take your vibes and go - Kino Todo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcda4e7e28821065dcdfae31320b89db5653c452ca993dfe459f39d5b257854. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USZ4V2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b9495a5ddc5fb41594e74dfea0f1e6527b251aa09f3e31f632dcf97b7ae12d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USZ4V2400357.
take your vibes and go - Some Guest Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52946206424eead32c8d6809e4ecae21fddeb5f9feb7d9e75cfe648d030dd65. 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/USZ4V2500024.
take your vibes and go (Taiki Nulight Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb101f2e36a0ec270b2b8ba377ad28fcd638bae9097acaa2fce689815110ffd9. 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/USZ4V2400432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eaec1c9aa7a7707d9c34c7a72b61d25d965efb2ca7b671a13457f49c8c6bfe. 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/USZ4V2400281.