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 0x7153c287cd05137b78c080a8709d26fe16c2ef445dd06000b899fb8d46eabf50. 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/9c452a3d-327a-4934-addd-c3e286a0c03a.json and https://artists.proofprofile.net/proofs/artist/9c452a3d-327a-4934-addd-c3e286a0c03a.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 0x9387673255ff23dac652e3ee88a25986f98475a6dd6d41d1203a8f7683c69cde. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/DEH742229290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77c1ca5c78c8d6a693158818258f671706d26af22470677efbca75ffa7920aa. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:13Z), 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/DEH742321922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce876872aeaa22a39c531c7c89373c9a61360013c8680d02954772503370f90b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEH742408914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0821d9e2da856e5834c386cb6ac22cdad0632241c9e3d527c4782233cb6e7a19. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEH742415241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61abccde3b457b3c6782525fdc820d146a7432b5ad7170ee89d8f9e569fa0742. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEH742428731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1206d51d267e24fd2662b403fae059891a07aa453ee333cb3ca01b84d4ed72. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:27:37Z), 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/DEH742435663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaddd0dd6c94b24cc1ed1f0363ea230f5652b211711cbd9593b80d149c58751e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEH742437312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc885404126cb73bd0a34e37a98c60a5a50110b723da08bee5f14041ba7512750. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEH742504170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb028d5609e9e5f8c0f413a16258f4fc0ecf98c3fde372fe88573d95c86c476. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DEH742502971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55368a7359cde22172f75f77b5668187d71c768b10171f7f84b8166bbcbbee19. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DEH742504172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cf69183f4104b52a4544109a7881b415cd6dc4d8d73cb19e72d9ff7272814f. 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/DEH742508219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0feab7db2d37b61402a145bda3e21a0eedc3d8cc073cbe1a0b6f5e7bef8693. 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/DEH742509128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec295fd1682e9af96eba777a861cbbf89ba67ee758a31e3697a8085997727078. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEH742509334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3e3ddb742c2664d8cc31bae6ef73f13ccb966e949397ab65444b56fa3e1697. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEH742509957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067f2e016ce6794e4295bf35df2460d4879626739704986627abf71a7fe2349a. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/DEH742514745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5dd4eb2b9582cf285cee221b4aeccad84b15d5c63186daf77e08ea265b025a. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/CH7812548173.