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 0x1a4a3951f2ee2788fa7633688b33619cdca930186601c9dcd589431d00d47cd8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ed609bf-316f-438d-bc07-c7c2e53f172c.json and https://artists.proofprofile.net/proofs/artist/6ed609bf-316f-438d-bc07-c7c2e53f172c.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 0x3b13cad4172e9e33f03e0db3a7160e67a66ece6f8ac0807f2d3f4b1be21bea95. 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/LVA100300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10b825668aa474712da81cd41faf2e37540f23152bedf2708d3f657038b82f3. 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/LVA100800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f97358438cf1575b3fd22efbca6f9a730fb13d6f7e7eb52b62ada24e16d2e32. 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/QMFMF1493011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf506113127c0245ad32f3a879f141e4c2f16811a87f226597982b41c320b06b. 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/QMFMF1493012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb6d0d1565de62e7519fcbeaa724791eee896f05bd0b3d59241757ba123be44. 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/QMFMF1493013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78316e5e3e7593371369f0c30ef08f3abb5fb06b084fe6c6f9825c958d1da1f4. 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/QMFMF1493014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a8dac4e87c70116b1b66b09b03ee4c2e0ed9d2eaa7d6e1f56b84507b8a80eb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMFMF1493023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea18a580c11fbe79ca5728f0eb015c9901af4316f5149a3d675b49d98c6e886. 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/LVA100300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fd8fce6f64d52acd077dbf88e388edf65f52b4fbfc949e8b18e80a6f88b7e9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFMF1493029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba0b675ed913437afafd3554f99ec1c535a78d8281afe6fad731cc81d013e4c. 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/USV351406456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb57205b5fb54356e43f63bc1de95015525132c7d3e27e7e008aac97b12bf284. 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/USV351406466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1722802ce4f506a39c4e81da8273df8ed3e8cba6084ada340ee5db69ec037028. 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/USV351406469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4908c1533f2185aca1365606c073aef0886cdf9a23833e17ef28808aff77162d. 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/LVA100500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7c6b98374a07ed1cb5288caa76fd1ab62904952b8e1ec3d61364170cd8e6e4. 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/LVA100500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf350c5a29b6fd2fdef304a35c00fc5fea531ee04cfdc56e487d84958f52075a1. 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/USV351422065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ecd66c317780ebcb6c5b294e6a879418951c0e5c69c7da769015fc24bf0e1c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/LVA101000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85f9f4f208f0f201f4054f74a46bb6ea03b5a6077f2c74ec93c92936c5f9d5b. 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/LVA101000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0852a911d442e2d89857d804af751a02fd8c2d9403b0fc65b33a875ef0b7319a. 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/LVA101100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc7e43fb7f4712015c60601c8ec2df32f3c9a0d56b22b4dc748c80749f229ef. 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/LVA030500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0573b1bb3795d632e1198c2739f8d26f88dda0db7f9051f1ca53869f45a88754. 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/LVA030500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60983e8e7c44ba76695155862fb8095160a17a30146806a9bca0e673b882da1b. 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/LVA100300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8859634ded23f19a4b4bde5738fff0001dad54a6dfa84280db206e62859f034a. 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/US8AQ1010824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667032cd43c31a3cf3ec1d0ae09bbcf559cfc1546bb0cb9196abebdedfe6f607. 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/US8AQ1010826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f289e3517aabb940cc58d2b0458fe1dfc4265cf89002c2b268d21a0d607a819. 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/US8AQ1010830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780bfb963294c7a16614fa6870a86f982240066f37f1a4f3169ca34a8b58259. 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/US8AQ1010838.