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 0xfc986395772c2767a88a0cf290ef84f2bf667eae52e3281eccdbb48d3b4761d5. 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/03e2f981-3502-4f0d-9a21-72570b3373c5.json and https://artists.proofprofile.net/proofs/artist/03e2f981-3502-4f0d-9a21-72570b3373c5.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 0x9731c73816b001cdd44b60d8ca267535205caee1e3bc53d73ca184643fd98eb7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX201615263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c32fe93d74b98886638267d210410c60d9c57a6838684b858cab210105cf00. 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/FRX201615264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5b88b2feb7a8639a700cbbcdfd5755c877d31cd6d1fc42c86cdbb405bd9a75. 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/FRX201615265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93dcee53160dfc5941da28fd163cc8d78de93ac45f67f9f45bf4a5c028b0f4a. 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/FRX201615274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae27a7522685e203332e10785be71e1cb43872aa0751e14babca1e096ec8239. 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/FRX201616437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee91e71005d362548c47b2f857f59cec23dd0a9328f02571bff5d2dbede748e3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:17:38Z), 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/FRX201616438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5dde5f0a510c4458e7e456f0bc08caa8079b979e21c37e6f9f2fc4cadcaa0e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:10:43Z), 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/FRX201616439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c38e0b738ac90fcb494fcc43043b80ce2ec228e7b21aaf3c62745cc16b5fc55. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/FRX201616440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d01b8e3c0e6214961fda1dd23395fc0a4b565c7656e2461c1a76ea6ee9dd098. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:15:40Z), 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/FRX201616441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808a300bab9ab312b9671b11d974bd0a00f4da57bbd021f1e0981fe15e1b6ef0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX201616445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9790b472447c9083b19de4c489b46fa54747c04e81d86354dae4e1152ad1dc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX201626600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ce351dac8f247fb56f5ca41ad55a8e5773745ef3a69ca01ebef733a7271ece. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZ650607454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31440f2c07e3ae2a04a1a7106c0ee3053ddf53b9f79901145dae501d043e79e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZ650508457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2939677a563a45da454ddee3ae500989257745109fe5b964b4cdba1021c4ea33. 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/DEZ650520536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e16954db607b45405dbc2923819b9954693cdb684ae2fd3d7613d33eab7251a. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/DEZ650520544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877083da0b1ea3bda6f888da726fe92c363be9b87a197322e75b72861552c0eb. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DEZ650520547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f6aeb0a2f2a52c801a89dc7953ef850eb225a5a4eea4cea169a09f368ac0f4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:23Z), 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/DEZ650607950.