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 0xa72d96f6c6c7fc88dc7bc7b6a90c954afc5548c01dcfed982945973adff1738a. 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/fd1fb202-2139-43f6-b7df-87331091a10b.json and https://artists.proofprofile.net/proofs/artist/fd1fb202-2139-43f6-b7df-87331091a10b.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 0xebf984ab34706dfaced251cdd68b77b94cdf03758d9fd9f07d2d1251072d331e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2201867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc84e204c59dbaada90cbe832d785a8139c5ee152e368fa5d22cbf3298a0824. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:07:54Z), 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/GBKQU2247472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f19c1471175c8e2a195ea1042d5647edc8ce5f210097ce5ba8674c092fcb41b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:57:10Z), 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/US83Z2219798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d697bef79dd9146906857c7fe1e600d6919a0a6f5303ead49336e43d70e9d3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCVP52200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cc54e53eace71a2e0f040588cd85672d200fe6e8b1a848e32ad15801c46659. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:43Z), 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/QZS642339503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d178d55e16f55fb2b1896ac5652062774fc4794359d86a1f6d45feedfa5540. 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/NL8RL2333539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2242e2681abd8f0936ac305e17e9084b070629666915b7e9cfae70447acf3fa2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZS662427571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfeaf1aa3cc5f65cc4867743d0b043dfb5795eb7756900a96ec6b5150fa347f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZS632408661.
Let's Go Deep (Ragie Ban & ENNE (BR) Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f57008d7b7c4c4313e32a37d2dfeb8e3ba6cb2e4acd4cd281deea5ff8b9993e. 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/CA5KR2375027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02656792630ede50e4ee5ae9229fdcafc8eadb363db87c05a48332a82374ccb4. 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/QM24S2301398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea379d987004246aaaf47deade0fc32b635b411be31d8e1f1293adddbb2b3d2. 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/CA5KR0003554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a3246b2c6e09f3d1dbb09b37221559d5d1aadc3755384c2f1c2850a921db13. 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/USNRS2443420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc2f64fb8a62c7e64e561a4d3678c6ba8b884a7a552818d33b414638b11b17e. 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/GBKQU2246566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b884c4e6d8e9c00566ac31a7681b9987cd563222e7956389d259a8ddee4696. 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/GBLV62029489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee03f3aaf45bdc3a329d89a28adc90b5bc1fd402b21d64694e9092b61b63104. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBLV62317541.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch