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 0x268a0bc4f4e3f9196ef34e9bf14a181a5fe2255a8ecb08fe2f8f47b8b788c4b1. 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/3a418eb4-e1d4-4b00-bc34-8b52c11d1eab.json and https://artists.proofprofile.net/proofs/artist/3a418eb4-e1d4-4b00-bc34-8b52c11d1eab.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0b5f3ee73e6f85209769af2858720467e4546fe2554d9a6e6e26cea584bd3f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2539820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d07dd1dfff00fea374cb99a52eee20a33be4529cfb3d907b55e441549ddad20. 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/GBKQU2509517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654f5fc946f2e850f35dee4d9a7525ebe6b4ff9ba50fa4f8d8b8ba8509d60f45. 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/GBLV62412787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06ff2dc91df0471113fa33b96c60a8c241e582565dd70ec9f642083be2f41d7. 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/GB8KE2422875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8fca192e5c17793b9437f627ddd5813227e9e0912b29c6b56ba5eb4bbc1553. 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/QZWFJ2456881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa189e4602dde2796f6e4f7561b28b815f14651e33801a6a1b1816df5e9d0fb05. 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/GBKQU2468441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5286ee5521fba1937bc08e7b3325cf9b36ead12acae476f24282859267ea81. 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/GBKQU2463880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c81e28a191a5bcbee3d9f9d0ec64fea40834c3b809127e74ccaee062bf6bb8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2442981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbaf979e245c32c25e536d9dfbe2d982c1346dcfd656b525f7e67986de4ed8c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2463881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0a5842b9714d9fa671fd34f02cdaf061b86a8bc8291a2212c351bc951a11fb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2463882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04691532d229bbbd0e106d61431952de64e57a4b7da030972f19e31b235c00a2. 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/GBKQU2463883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c81e28a191a5bcbee3d9f9d0ec64fea40834c3b809127e74ccaee062bf6bb8. 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/GBKQU2442981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda47c32fcfdaf5c2a16689f5ec57cdd61650ac59697e9664c155a0aab079927. 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/GBKQU2435424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b79b625f46b610417aa46c752f595a5327f236e7a4df0988035b0e345c1b499. 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/GB8KE2406826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdd3b135847d3c438a25b1d7b00f194f427f6c3cc629c96872c10ef53051cdf. 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/QZES92439857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c3b6e0b58a21cef05a600d550e291c0c131c848f56ccf0515750d6504987b. 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/GBKQU2406257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e744213076fe7978efdd75561b4411bb88344612df3841b9e5fea8215d2143. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ72454681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaf95e0f62d2afb1410e76f8e471976c21b08b69122156250181d26db067432. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB8KE2328576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd273a5c9d8ecd30e112978682e4311c990a80c2d362068040ff6d5217fe4619. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWFM2383278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7a454c3b3469a8dd614c5ac131ff028089a399555920aa4390dbd1925443d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2468438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa189e4602dde2796f6e4f7561b28b815f14651e33801a6a1b1816df5e9d0fb05. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2468441.
Nothing But... Underground Drum & Bass, Vol. 24
Nothing But... Underground Drum & Bass, Vol. 26