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 0x848f7abe9b9419c7b25b652a8ecb97608fd540a8d573f30370e1ec439957fbe7. 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/ec096e40-33fd-4c83-8fe5-8f83b903fa3c.json and https://artists.proofprofile.net/proofs/artist/ec096e40-33fd-4c83-8fe5-8f83b903fa3c.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 0x641fac0e11862046451cc5b65a661e8bb923e142d3ce162619f3683b965b22f3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GRIE11400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c373ab519a10abbae32164a3fca28326718d5f9db1eef3535c5027c25546752. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRIE11400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed237a3cfdad88151394071f213bdd04982fdc97b4aeb694f69585281c07cf06. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GRIE11400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37943384182ebc79260d2348c2a72222b4250e2680820822f4acaf7bcd05f6a. 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/GRIE11400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6339e1d980cac14242c954806041a08ab0f4218bbc526b244542f35956814561. 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/GRIE11600168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567c0927f6c1c865079a9bd94eebe24dca46e537d4ff0fab5e88bd5a048c9ec5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GRIE11600170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb891159c39684b223793784af9438ffd4772bd327bd5c90cc7c50d3d9d608b2c. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/GRIE11600172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66756260354b9a284668c017c737293542465babe5c06551f5b65cb7d91f4b51. 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/CA21O1907704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceddaae927ace07001967c4ddf2f54197c97f7a47f25ef8cc66d0fff4dffd752. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CA21O1907705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65304d72aebb05b55810d2cc7648d93748eced98fec1103c9517941b1c64004e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CA21O1907708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff388128678045528d797f27b24b5a383dbaf6052393fb98858962c10f85316. 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/CA21O1907709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbafb98a9da85ee1dc150f0b18267b3e3efef40e2b01ecc40d7d4e2a7b7c2b21. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/CA21O1907710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ac6f8b03571788e37390e6ab5269c04fecbd61c352a54f817aaeaeaaaaea2e. 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/CA21O1907711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958717c39c368454935d6c36ded1ec3adb4b797b865f4896e6f2d602470b2a3f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/CA21O1907715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0601c5304fbba829bab18cb711369b9a188ea22b96ca6784bc3932fd2516a9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:45Z), 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/USVPS2248303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7759eaae4c824d7d91efb7839b8b9ea769b607c05b5c8656b1aa183260378b04. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USVPS2463501.
A State Nearby - Adam Port Calypso Remix
A State Nearby (Adam Port Calypso Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf9658ff9cd95bd67c91f98370805e0ede75c4d15fb59f8b6de99d3403eef76. 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/BEN581800049.