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 0x3894ab10e9ababd4b7b204a24c82e8ed9b233f8b723d95028920e037b3c0c5ab. 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/837ae404-073e-44ff-8394-f228a445c498.json and https://artists.proofprofile.net/proofs/artist/837ae404-073e-44ff-8394-f228a445c498.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 0xb992d2d4c61ccd2711793da71bbf628e72e83c2951d881fa083da8434fd182b6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:59Z), 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/QM42K1705229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8d661c04dc4ef1be07c8b44cc027b839adb9ee5fd754f05dc07ef25d4ab3ea. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADH1747520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8e318b40c03493bb8fca172f057d57c2b98f66b5c9781319ace35a38b83dbe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEJMR2060014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda082de9239326fbf8156fdb9f60b2a5fe68258c2d7cf33895dd3d18363b11d. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:00:53Z), 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/SEJMR1780010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a50bcdd437b9f9a57fb6c1c92ca1b3220a60cdeb47397595e52f02389b77477. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:31:35Z), 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/SEJMR1450014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f1aa9c6b1e412b2f4665debd6809403b074ecf1ce67e447d5b456393a27aa5. 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/SEJMR1109013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feec164b7aee29c0fd3aad56c8ed743cb5d5cbb60e63f16ceae8b22257499c2. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCAEF1900229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb2cf682d1f2934ae98693001f100742dc4df2c19f9b55717cb6e62b70f238e. 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/TCAEI1919374.
Kayzo & Whales - Replay (with Shiah Maisel) (Nasko Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e5cc3ec376c257eac816a0ba75e0a8efa607fed5364b890ea9b969599e4d83. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CA5KR2201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a3ea778a5e562304a02d8dfabab486641eaa610ecf8da5898189ee3ed53f4d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMHL2239511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b6dd5c8474aad3db395238d9f1071e990e960150c463d4b136356623d7e9ee. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2201204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb84154111f42e69ffb9d0120f0dbcf433b9c9da5ef1e05386c9126f8e8db26e. 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/QZTV32359132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adba18d426afa20763a080d1d9a9bacccaa93fb8829e11c37c7f00db6abbd33. 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/QZHCR2000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c118a66b1b91833f4fc673e5a30abbd5a1c1e8fce344fc172ebcfea5646bbe4. 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/QZ5FN1910534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0cc7d367f84522cff0f82b187deb9f04d2c23fb812912f10381fdfaf4a2381. 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/GBKQU2271050.