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 0xe89f94f6b59354b6a6c6132eae6effa5688ba87b044ff51285b4dedd52a1d871. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23f58f5e-8ba1-4100-a19d-433356b63b52.json and https://artists.proofprofile.net/proofs/artist/23f58f5e-8ba1-4100-a19d-433356b63b52.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 0xb58349d8358d54a6c0dead0a02d5c343e462b37d5ba841f9843384d44a11b286. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMEZE1923116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ef22104b1ce1cbb1cb31482aeab619a50062ce17665872fb3f6b7104526f09. 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/QMEZE1976868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35f7b91dd23dde5193ac04d600e0b5f848b41d26dd6c2de633fe940d8174dc2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMEZE1893253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4678c4e2f257e6afda9aeb14c8060ce641da0005ada2c1a7eed058e75b29be9. 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/QMEZE2025652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c16500aef0d53726795cf39a4dc59117983f566775f22b2dce2fd2c34c0ed1. 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/QMEZE1784057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228cd997e5c70f15f5354225c9a62161e9fb197b1bc8c33e6390d982be8abc01. 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/QMEZE2147602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb97d6cde03c0e834f98339395b296211c98745dfae84e91a97e33b1a7a7c63. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/UKXN22123224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84e6cbbb552a01a77cd98f5c55ba8fdfb02d478c3cee606e30f0b39f6b7fee7. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/GX3Q92086197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd231587f79509d71209df52a6e93566906815d1069be7d67c6345da34f8653. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GX3Q92145691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703d832356bd1d6fc1ee5d88aba9e20a86f29123ae619b1c80fc11f7757f5a27. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBKPL2213909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f28f835e881660598595a1f0a44c967c7b69872435b71a512b39c06150be269. 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/QMDA72210542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcffb514453d7b3fba6853526ce9639d1281fca052ad99ee19bdd1c5c3b4fbe. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBLFP2273144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a5b02986eab615a3e4311ede06a43900e0ade6acf5d5da27ce9eb41b1880fe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:03:01Z), 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/GBLFP2273140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff966c47509a2c4ded8faf249d3770e686bc0dea442d8adca5a0d505c5a6a931. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBLFP2273138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768a85ede8a803feda53f202bfbe3c2c692abc482e1a671cc0a3f788a2372555. 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/GBLFP2273136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad24da7dbc4d32b98ccc3be359de018dfc9ee1393e818661ab36df9360dc4a28. 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/GBLFP2273135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe2ec3557e45b119482156b4bf49b5622ce9cfcb1ab2c11ad712bd689a82f5f. 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/GBLFP2273142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1e85bbbfc730ad5771034a0909d5b87fd9ad8b96737ae8d9fb87f64bb2073f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMDA72228324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdd6780bb036bfe08a9a892d5e9eb18d769184ffa692835656712c0708f4479. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/QM4TW2321281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3999f3799b6a055f64e5173b78cca84f0135cd76ed584d5769212208b41a1c5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TW2399877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6835adb581c75e280444df3ad27f1303c89105c2ba30fc4ce4723e3ce21ebca8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM4TX2363789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a9878814268031834d4aef4832f43a2bb1fe8dee6d8b4384bb8c4909d05728. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:09Z), 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/QMBZ92300950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111d94bf21140179ed9d01a585c4aefe0a0f7eec20f93fe69282bbf1f1fba521. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/QMBZ92328589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e10b930a2c99307d9e19baab148e69af4b46bad6bd70b35fdfa63465d28d5c. 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/QMFME2319993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0635b835ab5ae9738e536eec55015d05767a7d43b46f51058451a8086dbefb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4TW2372236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23043c2c7a52ded4c963719ac76f61b05ff22f283481165b4ff433398f74641c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:29:34Z), 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/QM4TX2443235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3549040cf2750f3e3552c2502f4f8cf713958316850c10f89e70eeea4676602f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM4TX2417467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733d43eb054baaa3536c39602419b343f9aa91f94d7a9bd1e6f6c83a2468699e. 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/GXD7G2487313.