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 0x4d16a75fd39c440f1955cc9e61445828230137a32014dd36cd703ffde9465ead. 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/fcdd1da0-0214-4a7c-b5db-b959b88dc9ed.json and https://artists.proofprofile.net/proofs/artist/fcdd1da0-0214-4a7c-b5db-b959b88dc9ed.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 0x688d391026b4b835bd390c7483652a79d6a1d22109964f62fc2c7a71f24182cf. 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/GBKQU2209270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f902fd4c2ed303f8987cbf420cfc2613914d9db87423cfc89a3e489fd375d5f. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/GBKQU2428927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4db9dbfec9ded612d443da53f8ba22e30eddcb391240942b251163ee9584324. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBKQU2471753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412eab69dce9a4859b934b4eac9f36c8000ff4d5c89ab989debb8318e1046d61. 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/GBKQU2502597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c652e7915ed78e85dc8fba8299554bd754ddf8eecc45b980c48f889cd023c8. 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/GBLV62404928.
James #1 - Original 'Bass-Loop' Mix - Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484aa8ec7743634c23642af2db440413e63fd50c70087285219ddf68a37f4229. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/GBKQU2533630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa67d009a9175f444eec55802d004771cf1ead3eb40bc2fd01d04d6b1aa9f575. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBKQU2571809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c133362d2b67adc7f02a23a13457d6fe43e38ee53a8637d6ed0a6755637bcb. 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/GBKQU2464932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd30419e854da29507d162f6a578536259f3cd9e41ec1c0a94ed330a22e130b1. 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/GBKQU2436163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a430f6091e9a3e90c40b4920ad4220dc62dad3f26e86c51eb4ee868a72bf77e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBLV62132296.
Party Jack - Angelo Ferreri's Re-Touch - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181c89866794f76ee6e7e7e49f71dd88a7cf2cbc57208b1892dad4a784e0f97. 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/GBKQU2202771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0a74f19e8b63a25f134a04ed3c4c3d06cb1bb049807c5becb3a012e7e59824. 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/GBKQU1905093.