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 0xd4777e672589f7a25d344e34aa44074530d28e7a2853aeb29e322abc57dca3ad. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55387143-834a-4996-8a18-61c87633e55b.json and https://artists.proofprofile.net/proofs/artist/55387143-834a-4996-8a18-61c87633e55b.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 0xff01aa0b79bf9d2266c510d6b2bb2482a1ccb549fdb8e53e8fc0fd6b8a2c05b8. 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/BKEZ92300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa419fe53794ad2d8eaee589d1c6f3f997c645b29c171541c0d2ae3c46d8dc979. 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/QZWDD2377041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb88a80a508f3a34e3ac5d39f1e0ae1494af312a571d387b0223c30ccfa0818. 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/QZWDD2361322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b00a826e2a68809a714cb206143e64d5c1bf37d6c103762bd67ff447c216d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCY5N2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b641f9c9eaa4e6d79a725747780ea2fa197179723027fff2cd00d786916cac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCY5N2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff01aa0b79bf9d2266c510d6b2bb2482a1ccb549fdb8e53e8fc0fd6b8a2c05b8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BKEZ92300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc80ce4cd44f34adac215696d3ebe12eb4ba8e6a33c57feaaaf2294d7cb9c14. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86fae36f296cab9ec23f42e76fe65d2aed10848ea859060cc87023191afa6f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC2GV2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc5c654a00e7077eec337552d8718cf6966cd5800495b7b652b2a4105dc2b36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC2GV2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dab9555849357dd80d5916279e32ae94fcc1f5207c459d4a040dca6930689b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9a33224c7917a32833148b83ea1e4b1f7ba066e75086f5d1b130f85d996079. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d31627d98767066d66734fb1db8909980b2cacbfd7119957aaee6a2780ceda4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe429235da724622db84a82816979bfbf3e79adc8c22656f72628b991e5bd79ae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2400521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc80ce4cd44f34adac215696d3ebe12eb4ba8e6a33c57feaaaf2294d7cb9c14. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dab9555849357dd80d5916279e32ae94fcc1f5207c459d4a040dca6930689b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRRGE2400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39609013c9338221d2cd043e882dec9a2c9b9fcd4c184be0e0c3e2cdba3b571d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2300579.