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 0x0653b3738fc567c346d3fcde697191577c0c0759bd6cb546da3bf87f89a18737. 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/2d5ff497-767e-4618-9655-4776f9920e76.json and https://artists.proofprofile.net/proofs/artist/2d5ff497-767e-4618-9655-4776f9920e76.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 0xe9daadace4958b931326be2911811652da85a5db1d932ad3872bbc20bb79a121. 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/QM3DF2166721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5abdb0fb6e065b981a7ddbd0016aae458e6776162939fabd1b712ce2366a01. 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/BCD4N2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c33302728af6a49928d1515f091109cdb8c30451513638130250cc5e246683. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:58Z), 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/QM3DF2169646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa240c584883e35a66ec27552352f35816237f009814f7f347e7e7afe21fbb7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZPEW2230026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe811e0768aa76ebb733c58da05113d16f88a086450848d064967f5d12f490b6a. 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/QMFMF2220309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb06610553e07fd0d4a22fe196e2dd0a6db4613c23741cba9a34c845b575e443. 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/UKZGC2301839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac2f56362f37ae5b9680967b3920098466c12c33899ecc8c2246f5f72e455c2. 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/QMANG2202637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ac54c354122c9cfe5e34f88134ef12a694e2adb63bdc66f2b5adb5839b5a0. 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/QM3DF2294580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1dadb1e961756d5131984f842651cfd5fdd2a49eeabc2e78d3ad67278539d2. 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/QM3DF2294584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedfc158118e36948e0047042a8121f68ade9f40d86d47e2c4ede840c05c683e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMANG2228933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00074ae461ea05f3d53a132ec635fe2e8830f03c129715285db43470c35d0e81. 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/QMANG2237333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a5a53c650d35ce5499708873e0e496d95ebe003f18b030a53bbee71178e2f1. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/US38Y2309749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6accdeca965afe0326aa09f3347b6f08cfc21349404db9e8eb9d6bd89baaa512. 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/US3DF2418976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967fa9f0c244989f30906b2db73cca6dc9206434f1404d552b5c6a112c11476b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US3DF2474298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac43a9da28d79a418b10ee97a806d80407cba501b79bef5bec6813727301f5b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:26:34Z), 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/USANG2405977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e8fcab0df0f2b2049f6e7ba8760285caba9dbc66e50d9c1ab070849654d9ea. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF2498649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8b968eb0f2b78ae403123b855963e9942aae4951680ba562c5cdacfea10a87. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM3DF2400841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ce81aa8b901fc972fd769fc6d91ae4c8e04e8ee01b3d0262d45ee59d123c0f. 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/US3DF2526380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047e0d8f9109ec0200178b932ce16882b4b84160dcff156dc28b9919cdddb245. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE57V2507437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c0348127e483e5d96a29d7dc9086fd94769a08b528c8aa2a0f26b7b3e0ae3f. 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/QMANG2234438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6accdeca965afe0326aa09f3347b6f08cfc21349404db9e8eb9d6bd89baaa512. 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/US3DF2418976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00074ae461ea05f3d53a132ec635fe2e8830f03c129715285db43470c35d0e81. 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/QMANG2237333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3546d74761da9b772117bda57f3fd027bb4cbd8c36c45a07c2895dfe06917687. 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/US3DF2469833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5abdb0fb6e065b981a7ddbd0016aae458e6776162939fabd1b712ce2366a01. 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/BCD4N2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7fc7af7b9b7e82b0885a1d08b3c446d8fba86ed00f83c3ea73e28de99db841. 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/USANG2276975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedfc158118e36948e0047042a8121f68ade9f40d86d47e2c4ede840c05c683e. 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/QMANG2228933.