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 0x310fb486d0ed33b77ef4fc70b0e10cf1ead016edbdba6e1398d246bbef463643. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a33be0f1-a06c-45e7-8a7c-db8e44438c10.json and https://artists.proofprofile.net/proofs/artist/a33be0f1-a06c-45e7-8a7c-db8e44438c10.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 0x3e4fea6debfe7b64a892ce34610a4ba4031c7715bd6ffd3ed917f23ef38896aa. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZBRF1889368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048ed9861b87b1b1851e1e62cfb0d2958c2e0fdfd4cb3115bee95be76e354246. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZDA81837677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab393e103cbb5605c064d8f9130298ff5fefbe43160c75c21c9f4175d00c720. 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/QZES91890527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b0e4a64bcb2d665d424254b1a4321d0046ac2c43c015a779a388fce8f60c40. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZ8LD1930216.
Should've, Would've (ft. SadBoyProlific)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf520c61e22e5718678706132ddcf73d53776dae00314d65ccb5fd974d0ebbbce. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:53Z), 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/QZHN71935474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb268891b73a08e76919f2f9844745a845ff434193cd28cffb71ca0eee6ef9e3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFYY2099469.
Us and the moon (ft. Rxseboy & Mia Smith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3150384a0b13623c55dc823413d09a9bf440f312bfc60aa260b702932a52271d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:33:52Z), 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/QZDA62044727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73fe651bb34f6edaf9d2567be08014350dcacfd9e0c88981c63952c59ac77dd. 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/QZHN52007296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82015512a06b4ff547f1a3c4e1704ea75d667c846108203e277294dcfa19dcf2. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:37:35Z), 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/QZES92203107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815cc55a269f16e80984c7ce7d0e69b25ada4f84f8b816d013d5659d23009db9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA62178138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9e094f5000f6d9116c81857087550caec368045b7791878e9b83214c397769. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ32328408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c64756aaf6e4c1297267241318fa77b9bc42457740dc6e65dc2f627294e7b0f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZWFH2568024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870a403e624519dff42be776c03583e89df6b04e9ab41eec836627d23170c81c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7V2522013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b993c982d8b1b14a795a760fabf23de671fb3d44658f37060f93b38a31e755. 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/QZFZ41994950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e6af6a18f901bc59757a206cd3c9ff95744eb8eb907d5075b541a914a92794. 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/SE5752361264.