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 0xbe3c8f411e2503889c748ca3148070e034809e57b16fbc0f6a81293bdc23f21d. 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/973640bd-1111-4309-994b-5df65eda2931.json and https://artists.proofprofile.net/proofs/artist/973640bd-1111-4309-994b-5df65eda2931.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 0x42ae3fb616c92d695c5d21be9ec218d14802cd010d0e03f68da001830ff5be1a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZMEQ2206015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe146d2a0a12064cf227aa98f25d3561d272f7042af00577ff679d4808af8bf98. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMEQ2261370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42f6c0ec465c34b129770b6678b7f0e0f6c7c342abc8c7e943a5b0db6b94c9a. 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/QZNWT2278776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3371937bd9d67c1623adee121fc2a105755ce77f7ec21d6659bfa5ad96a62f2e. 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/QZNWT2278326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cc0d7eec3b625ebc09e96112fda7a967543696aca7ac2da05d4ef192fcb4fd. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZNWT2278775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26c3d623b2e2f23c70f5ed45cd84a9a9059705de54cbebdde7cdd21b36ccfad. 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/QZDA42340868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08203b29885dff4affd0b2b6eaad6241cebef7c0a78cef79ce0ad5ee9616eb35. 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/QZES92351840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801e8978f8a46230b38d375bcaa405fb4488ff2f76493a609b56bce2ccfdf578. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHNA2355492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05f0503b65ad2ca04d31ff227c8c89b57c0cc4af66ec723188d717cc63ca934. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHNA2355870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eff870901f088d2400cf6a014d5ecf490b360683a810260a735fad253219ddd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:48:28Z), 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/QZHN32451793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb82e1c8f74adb340ae0e9a9f6d1512b2bce108416f997419cb0b2871ef2048. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN62492231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2357e34f5fa0e04ef0dc94c60959bc2c4bfa3cffdd9cfb886161573fac8b6e7a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:23:16Z), 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/QZHN62491860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae7d9e746a7553742d07f3e6c79d9311555895ffbae7f4ada0edfc2a4c63cd6. 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/QZK6N2431127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f80de9a29c4a05831255eadc780244108a3d0cc93dbe97296a16b1b0b6fcc0a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZK6F2439035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b88abc891c0c700c2a03363025c9cd6d4400bab95dc4f6cc11bc007946e82a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:56:28Z), 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/QZWFE2455180.