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 0x357502f99cc9d55f0562582350374c7236905e84160f025adec7b63263e97f3a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a12a957b-a110-420d-ace6-5c6df42859e2.json and https://artists.proofprofile.net/proofs/artist/a12a957b-a110-420d-ace6-5c6df42859e2.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 0xbd9f4483f3845c9311907722d543043db7f223a836017243ad375b6874dd2071. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JP92E2400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb89118de447ed8a8f3c9872135f0eb4d3efd9c7ba951a500746f11e47961f0b. 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/JP92E2400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a3e9b4b30d8b44a65cc6b2ce9346d402bdd6caf3423c085adffd5b33af1d65. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:39Z), 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/JP92E2400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cae47d758699e0e00aa2eaf3e825334f384c7799de368981195ff02891fe55. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:59Z), 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/JPR502409035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb95b342af2528e6c39b6a0ce7f069ff5f4395f4330e9dcc4b6fd8196e629a2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPR502409033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cc1b0adf91475f17dd664ce4d2f23562f43e6d9ca1a5e4ce327733ee0d6562. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/JPR502409034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf303864799b253ba8baeb9cad60e11473d92bb5adc2b467c8db5db469770d38f. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/JPR502415610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc154918f14dd7c892316633b89b2b5e4effb57c7a51eb21920b041044baa89. 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/JPR502415917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc96661481dd8add1436f940f13c14b79cf1bbafe13419f19f97f6675676a8e. 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/JPR502415918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d032a5346cf92fa1c5b4c58545434998b2c6c423a54c63556ed578c100abbb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:50Z), 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/JPR502415915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdedef538f0da727a9e9eeaf68b07474c25fbdb3b2ac9c8b3464a6d6a4471d05. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:26:05Z), 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/JPR502415916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4087ad0d7442b0584cb6a89c2399a3c6e8d3cae7a08ca9f76bd4cb90826ddda0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPR502416200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e20c6b8c1f6dbb35b2eff479fd2f4b6715cd48198297097bf7f71d7d4e81d6c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:44:09Z), 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/JPR502420356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0f24c1ca52ee2864360ba78ebb11f968f4cb6173b79cc3f359447c4d6f023a. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/JPR502504093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cac7a0c105348a2895004fdacb480e809b81d6c4077262b25580e4b23c73ab4. 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/JPR502507147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748c48424fe93c13320e8c18fd9631e89d5f6309c03c21f1fbe4f14bd36dc59e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPR502509827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1f202227a7518e4326f702ac67b647d5831d9cd78c62cd84a82a549baaa3fb. 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/JPR502510073.