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 0x1023cc0d885256bfc0031da35dabc0c2fd84a79eb1435ea0807dd5aa77a7dbfe. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b61a087-340a-4ef6-837d-ef6461a669a6.json and https://artists.proofprofile.net/proofs/artist/9b61a087-340a-4ef6-837d-ef6461a669a6.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 0xbf0cbe10180463fd7b6843824613d14094b8dc1067f8537f23797ac069927fa8. 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/NLYK92300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0696fd2c213fd42c7f274532acc9ad8cd7bf8bcca797e9a4669292d5acab0bea. 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/CA5KR2381462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dd8bcacfe9ff4e536093917a1a7e15d782c56b998c0ee239553264d0128315. 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/NLEE40802652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2f14674a3e0e6f35bb701060b07a2df238011ff1f8c0393d14a5aa078bcf58. 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/NLT2H2201011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c52444ae849233d18462d0978feabf3355d7c0efe9c7445ececbdc83f03ca3. 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/NL1DT2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547cdd2718c868fc1294bf961bd1d910a016cd215e836d7622b1e7971953339e. 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/NLAM42200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130b433a75b3db71a9a35e18990b6cd2f3346613fd511b96ce18e829128c72a1. 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/NLAM42000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130b433a75b3db71a9a35e18990b6cd2f3346613fd511b96ce18e829128c72a1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLAM42000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a4ab5a4da2c26a812cfada5173e10ce689d43738fff0ddaa00ba30797fd2ae. 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/NLAM42000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b20af9f57af93ba3dd1bfa26e9cd755182f28a980ab3472597b957805694f7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLAM42400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17fc80a19a8e5cac5cd530bca8a919e83b1cfb6c955f1c8d42c1dffa36bee33. 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/NLAM42100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075f92763898dced0d078f9932643c4d51c22517328bfced1c9cda8b22680520. 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/NLAM42100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dd74a7850c6bb300e9fc4cb4dc39f9d1a21acc4b2bda0905dd00b272360460. 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/NLAM42100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193936ded36654998b91a68e96b0d41cf31ccf8fae9b3c30cf335a840b9b8ac7. 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/NLAM42100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5808ec1981080c7e8258de0df99f28563b135dc71f08e040fdbc99aa4b58280e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/NLAM42000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a4ab5a4da2c26a812cfada5173e10ce689d43738fff0ddaa00ba30797fd2ae. 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/NLAM42000061.
Because the Night (feat. Aiska & Julian Black)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6437cb282207b02da12c2c6fa3f9d6f22e305a0e94aeb25eafe31f3883be7a41. 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/GX8LD2376136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c52444ae849233d18462d0978feabf3355d7c0efe9c7445ececbdc83f03ca3. 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/NL1DT2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1278096f01a676c69b5ef9b0128f40f52e244388876d308269e0bb238af8dd40. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FXQ392407416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc011c511ff79089b97440bb8b0404939f1c3f3cb80fc71adffbee2872e8c4959. 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/NLAM42500052.