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 0x011cb9526c71c19e39dd66cc58cdb33a5bdc0817515f6b175ac7e5a44ed621d6. 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/765b1bea-74b1-4711-b10b-b3ed7ec39966.json and https://artists.proofprofile.net/proofs/artist/765b1bea-74b1-4711-b10b-b3ed7ec39966.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 0x70d2ba25b1b821df749794721b86940d231bb0bbb0a5f2d6e775a503ccb2a144. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:20:52Z), 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/DEAR42281413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa5f8b3beeabd6d5e0ac3f43740288f5fb1e99c1429f605d0cbac4153e9e309. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEAR42273682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bcd223a972d72feefbce86ccdbb96039f325c9c405ccd31f409264f1b11fc9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:01Z), 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/DEAR42315775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3f3c678e5f41882a63e22c9ff87c590bbbc9714ab5e247e79c120fe71422f5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZKDK2297442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d36394baaa50e75e27c7cf27f2cbca8a41cbcf3f0d00a120eaa5efefba41537. 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/DEAR42482962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdecec3c2eb9b85a9d27447d74654ad7ed1df7010cabe003163feaead780597. 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/DEAR42478306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d88c1796d3bc6e3f39a8a8476ccb00274a3d539103ef692e9ee164764a78cb4. 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/DEAR42478206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1720f94a5c4614d3ce931f8921d1a95850127d0e7dde6ca7f49964d5ba3eefe. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DEAR42478161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03e90c0de0dc6ceada1c928d35e8a90feaba5b03aca674d4012f0bfbe96a668. 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/NLCK42412745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb879ed2db4f69a51b82c6b238dc4c51ad0de50ba16507d7d5d4524df5bac4eb. 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/CA5KR2495019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595da78bb99266d69f62d096a5d7b49885244dc390bc7c936f4e55c9189bc9d8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CA5KR2495022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5b3438f71d93e4a536966dfe5ba7261885066ab519ee45a9dace1bd0d47cb3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:20:13Z), 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/CA5KR2495023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bae231f7f876dd12b0d366e4d92caaa57b17d4d0a8279e4b6546b75002e3862. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLCK42419023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca826d2e1dc540c430871e8dbd83103a679dcd6dee944659d79678806548284. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/NLCK42419025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec248b99ae6f33574705fa984f0db151efcd93bd998c40d08291231bba580ad9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEVV92401204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1819607fc1b2248c32f2b954e0ac8be0bd9781ace40f65bc237313ede2159f2a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLCK42503545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b0bbfb38484880479dfe6460db279fdd77e00a0416755a54da82232c32d4f1. 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/NLCK42503546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bee2df7741a6789d4790aa1978504ccc8ce9a97f5e12d54ea5abe7dd4e7c52e. 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/CA5KR2475975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e09c6e05de797918e96852228eaca5bf15ccb6da54b414f9846d37495d292e. 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/QZKDK2382052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bf8381840141a582b8c6e2079d338ee4358c457fed8222627e5bda01525f42. 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/NL9WP2400007.