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 0xb5cd0d70618854f5c8271a6ae377f87dd6bd94bd551fb009c8967966702dd855. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6d98941-e028-49b1-92f1-d9aadb0aa577.json and https://artists.proofprofile.net/proofs/artist/e6d98941-e028-49b1-92f1-d9aadb0aa577.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 0xae30928e1f46b21b7e338e1c17f2b7b0c0c016312ab37cbc49f15dbc65a5cbbe. 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/JPB622400826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09403217b8f77228b38e8facf170e54e38b4e10fa4025943ef19861408dd2316. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB622401251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49a3effa0497f728a32a817fee1b469334087b6bec3220dfa36251b484138da. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB622401252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7344a3f3ecee8a998350494b8a170d05aa8993c82b2c2f0465143af74467dba. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB622401253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4632a70549475306f08297338659de8aead3bff7345245e8ebd4fa6f353e6401. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB622401257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0905ceb1a5c1f5d73425123f0bb3973a950d218ddf23e63a4268c53119e38492. 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/JPB622200651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f65c12b43afa7be9753d1abe0a2385e0f915c98728c7b87efb04e5b4f24d83c. 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/JPB622001339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a34b9b7588bd8b8a77dcd6a3e8feb44daa2e3d89688fce044f7dd5f7264ba4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPB622001344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e341003c1a5ff42ee9a19bb9929f1e498eeaadfc6c9664a4da6e8777349a31. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB621900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a8c2614498c67599f7bfcdf5c1a3206989ca0877e489c78792b8e600603fc2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB621900128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e5f6b82aa1340900a132b35b5c5c7d47c0722076ff8b6f15a4d884e0c1e99e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPB621801188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffa713095b3f9c51369816697ce448ef6877c4283053c2868a375619b6458f7. 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/JPB621701706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da3d3c12513322ecc9ee8fdb7fea8091211d095d3bfaefb9b21b6675027bbb3. 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/JPB621601030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff721ce599ba383b7353165b411555f9d7a720a8bb0857993e90edc907f44002. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB621601031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455f56e15e7af4bcca1b07b6f492cfe256ce30ce75d8c77c56d8f648acf321e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB621501303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c315c4c1465418d5eb01528c7e85d2828b86182a62a43606645842649d2a68a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB621501308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae30928e1f46b21b7e338e1c17f2b7b0c0c016312ab37cbc49f15dbc65a5cbbe. 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/JPB622400826.