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 0x29b14617261436ef21d24ed136c8b3cab97b383192643f7352659f60722e4f09. 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/aa78f8ea-6892-42bd-9461-95f7cc7ee3aa.json and https://artists.proofprofile.net/proofs/artist/aa78f8ea-6892-42bd-9461-95f7cc7ee3aa.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 0xd570f6659c5d8fb72583dd051cce4e4748510e4f8e168e86636bd1e883084426. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZTBF2387367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee32c5d588a49283d6186fe7e0497007118090bf9b0f9267fdfcef8456412fed. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:35:15Z), 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/QZWFH2396964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac5e47b7c1b58acbeac39e3789e12a3ae51b870d0b03e8859ebade95b9dcfec. 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/QZWFH2396965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc8692325486be41bedb9c89ae31681c264e0f8069b69b1f322c4069ad2cd27. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFZ32481614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde21741a5dedf2120e8d0468bddf87bd7521a7db914f84c3c1bd9dca2d1afaf7. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZFZ32481615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3ce8253c09e3204c013eba247ac06cf778030b715186a754f1b62d881458b7. 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/QZFZ32481616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e80a9657bd00ed55778e872b66efc350f9a5d388b55d09875b52374a4ee8eeb. 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/QZFZ32481617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6256823d3e97a4d84c4196284c06cb62aca09781776c652ea6e35b20611297b. 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/QZFZ32481618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8b75538d8d377bbaa355b62abaa5dfe2f80d7cc1b30b4d4c4d61fde5eb4ddb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZK6G2400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b04e3be52eddb94603292b6abea5f5886509ab1b8777a56d074bbbd668fccc0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZM4G2401139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb962a454defa74334cb5ced46ccccef595b5e39ee077dfdd5d6e04dd74c38ba5. 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/QZM4G2401140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2e29e429e4bf8305ea24e9445d9944ed19666b4d55a35cbd82bcdc913fa0b8. 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/QZK6G2403549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa409ecf8f472bda0beccc6d68ec7bec8453efb6d14fcf3884c05a8cca7985a. 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/CBEYJ2423448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7063406b563d36f34cb5fc67adee22e9867d1a408e558222087a89accbf1d8b8. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/CBEYJ2423442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83d154d451ea9eccd672ee65532362adc9c6b7968d451888abccedd4f443bca. 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/QZM4G2401172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5591255eb362eee75678dbb2aa4975c5c0a988df3f5d406702f2d7ab809da9ca. 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/CBEYJ2423449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16759d19b8313989f6151952d9b4291c6227bd3b35c3008636a8a716ea61019b. 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/CBEYJ2423444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d766779131ab844d33be6a83bd7196643503ef1151118e350bfd9d5cf0b3cac. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:39:54Z), 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/CBEYJ2423447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa409ecf8f472bda0beccc6d68ec7bec8453efb6d14fcf3884c05a8cca7985a. 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/CBEYJ2423448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7063406b563d36f34cb5fc67adee22e9867d1a408e558222087a89accbf1d8b8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/CBEYJ2423442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83d154d451ea9eccd672ee65532362adc9c6b7968d451888abccedd4f443bca. 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/QZM4G2401172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd395f4dbad3d4c431cff867a78c28de5450a10166c04a89a9175db9dc7fd5160. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:42:46Z), 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/CBEYJ2423445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5591255eb362eee75678dbb2aa4975c5c0a988df3f5d406702f2d7ab809da9ca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CBEYJ2423449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16759d19b8313989f6151952d9b4291c6227bd3b35c3008636a8a716ea61019b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CBEYJ2423444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d766779131ab844d33be6a83bd7196643503ef1151118e350bfd9d5cf0b3cac. 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/CBEYJ2423447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39d4699c1ea1c4b70e1d1624ffa1b9096c27d76ad7751e14122c2ba6e52fd0f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:42:32Z), 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/CBEYJ2423443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6a1e4faceeff81b5d8bacf11c871d06470c09b19db8d1f75fa62adfa3a6ac3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CBF8B2415770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc304fe8300869d0a6079dda77a34d9a7b4091faceebf3bf33daf6127c5bc54e8. 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/CBF8B2415772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5ce10bd8166bd791244a30292286f5ce5b0756ed95286f92ad7a80270d3d26. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:41:04Z), 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/CBF8B2415773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eefb0baad49b3ca905e9fda86e729e32e1f869825ddc4cf8d0610efd4e52a1. 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/CACWV2576634.