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 0xa426fefe9410dbda9ecb55643e941e18a1a9f34d50a8bd2ded2d6a913c9c849b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4899fbc9-bc0e-41c5-80c2-097ed6a94808.json and https://artists.proofprofile.net/proofs/artist/4899fbc9-bc0e-41c5-80c2-097ed6a94808.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 0xabaabab399f57e66f627ac3ab8514586f754c1a20b5058f7d7136d0e3fe6c923. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T13:00:22Z), 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/IL6652205009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86616f2d6a05a94b7ed2b0f58f1391f0e98238a0ec29801a04afe84dfa1b2221. 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/IL6652205010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e27c5bd1f306ae916a521fbf1cf39b92b2e347e05afa9b7997d21d731163c16. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IL6652205011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c5eb46bb96125e4113113a16e38a0a13ec69d3ba3739480a7c3b9f2da67a79. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:02Z), 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/IL6652305571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a564fbdb3e94888e792c6689b59b906b4876bd619cc675312ea4324cb78e833. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:14:18Z), 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/IL6652306429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb9350bd6ae116b6680514a4197c7d2d8dc0fd265425c8eb595c6c27bfb860c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:07Z), 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/IL6652306558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf78a66eda06d01619a0abbbfebfed0f678a44079efd641d5f9190c952c5e57f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IL6652306559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e94603d96da0d29518c918583575fbe4d4b9d77daa2cd10630954b588eef0b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IL6652306624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59c4e4817c4d3bae2070da450d822456f4d11ad2eb9a3cd1aaef00fd02d30bf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IL6652307893.
Entr’acte: Act 4 (Carmen) - Captain Joz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841653fa3a4db20d08806c863223a9fa99001fc35452b0062d57693115bb6239. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:35:18Z), 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/IL6652307943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bc23fd194c38345d35194ac4cd51028faed7b678e58906a29a4195ce04921c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IL6652307940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3109301d24c6e3bb522556ac75c7dcf2eb92555dcb3cca0f58c090b6d3addd65. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:13Z), 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/IL6652409536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fbb9804c2ececbebd74c1b467420e5a999652980ac573864678c36845bcceb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T04:59:30Z), 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/IL6652409555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451e3773349751ebd617b0dee744880f250de03aae415a522fe8233ff72c118c. 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/IL6652409559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5987e11ad04a449ad73ed3d2d801ccc6cb06faf129abba22a00b03cbe5377e4e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IL6652409217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2685bd1909ef2aaea3d03dac8524010e646ecba98ca6be5fc4b61035ca0e46. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IL6652308202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a03e19043e91aa597e06991b9ef0374312e2167587c6740187886bfdd100166. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IL6652410362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcfa146c3497b5330a74f7a824a4fadb5c3369ac1dcf83ddd4a6959d1b54d7e. 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/IL6652411155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e154e41cb8325a25bbf6c1bea08569c7d89591219ca9aaecf1436412d064ab. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL6652511898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205f6de3c4c0d8456869a5602bf6d5f0a7461799006861fbebf80dddc7fcb224. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/IL6652511851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c5c6a342d32abfa5c5f10ee15f1fdbd3a514bbbeb09dc053403f42b48cebca. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/IL6652512030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108a63fda4a40a856cfd8cb0b0b71d7256e70cdf8f413f2a6f77a1511b0456a6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL6652515086.