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 0xf4b44ee95ccc3c1cb6ae2b051db5315d9de88111d41c1747141291ba8dd3c92d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cb5c430-3d87-42a2-beca-25d64b2ecb7f.json and https://artists.proofprofile.net/proofs/artist/8cb5c430-3d87-42a2-beca-25d64b2ecb7f.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 0x91faf874c5a96a62e235d5979e8800c86a04a5dd74f367ebe131db753a727ec8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:53:32Z), 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/GBKQU2127747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e3e154dcd7c9df256e81160d65e10afcdeb9db2fb8409dca5eade1de30ae29. 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/GBKQU2127748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc74344a9781c4f5004981d3dc530a1aa31f271b072a4d6267a845a0ba94fe9e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:53:29Z), 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/GBKQU2127751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3e193f7aea3d420e5a99577e11f00d003befe878b08f06b707b189edbb82ec. 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/GBKQU2127752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02cbcb7da30f41c164238432bbe253176cc1f303451b09f073255a5e50dc49. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:27Z), 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/GBKQU2127753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d77e986c1bd364313c420ac714c525cf84e64166bff8910681d0bdf1136c393. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBKQU2127754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a436880ccacf0ae505f1b9c22f1b7d9bc5b988cfa6e24ae56f2dfc68c563493. 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/GBKQU2127755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820e3a098b657faaca7b8d9510002b067e9c6f3b9a9f70a1788e54e9577cba23. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/GBKQU2127756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7186a81401697196d1f26a42c9d68c6a1b84827590d2aee95dad967bd91e0a1. 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/GBKQU2127757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d94fd1b99bcce92d13808316160631f56309c816e40754f4bb1cc94a8b72de. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:46:44Z), 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/GBKQU2127744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05722b46d1dedcf94fec24d70a9b2619f3470098b204240eb4d8f02001799633. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBKQU2129629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6167ef16fe4a93743df7c8d0610127c66f287f808d97891531f2d8bb02e9cd52. 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/GBKQU2186783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57879c7696ceb08d58bb2e6a4cbe63b8a7ae147f1f69dd299c8ef00dd71c802c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBKQU2186789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7034a67be064b2f8781e39640281be7f64d3e8ad00189eb8e0848f3ee02380. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/GBKQU2186793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39a5a36c874dd5ca80a4473994914073ed050e93bca69a87358e7fea2dbb964. 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/GBKQU2199412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979fd848e75f0a4dfb48effc59f9a9d5aaef152ed15a7fa27ca2021cefc155e8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:26Z), 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/GBKQU2369419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517cb70fc932a2ec97b68043d5ff09632faf1cad67ada213e29ad7973a179554. 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/GBKQU2359533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed4826cbf6b83b201de5beca29b6efc4305a8a2f3cf4f46cb6386dec6ef257d. 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/GBKQU2362464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6466a917325249cdc40bb009ab5a6716d0d83b6c4c7f52f54916b3a3c6290297. 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/GBKQU2369422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270d75528bdaa23eba3e06609b6cbfcb21cf73864cab31ed8f7434f9f0307835. 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/GBKQU2369423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa671cbe89019fbbe3f6e7ecc08261fbf27eb01d577ccb032da31d4a515a6cadf. 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/GBKQU2369424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b5a801ebc0145bb9dbb225352499c7c812428da5fcbfb0c04ad02aa66fa757. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBKQU2394270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ae12b7a9796511261fb98c59b677742693a1be0f5e58f49749aeecbee5aa1e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:44Z), 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/GBKQU2394272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316faded183ac21eb929d7c044357619f9c8d9502a0b71b2cf29606859c749aa. 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/GBKQU2394273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36db5d1ff4a3f5cfac057589d022594001ec17808cb6688861371cf0fe94832. 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/GBKQU2394256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1beb26512de4b6b1d98485285fb84dd20020e9623dccba6476151a35bc71b9b0. 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/GBKQU2394275.
Café del Mar Ibiza Chillout Mix II (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0f9e8142fad2bc5e9db7f75bdb208f17a8f99ecdf3df0ab2cb3dbab3f6a8d0. 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/ES8742302001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecafc63899c18493b5735a656d2f890b8c9765cfcb947fd1441f0841393be6e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBKQU2127746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c89d26a67e2497f5d7be9a0022edf923e254ba03f369bd140aced85bb8cd3d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2369418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5571d7bf8aeededcdbde796e04b3cd6597d54a0a405fe1ddff78d9b00fafc06. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PL42G2400001.
Café del Mar Ibiza Chillout Mix IV (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed4826cbf6b83b201de5beca29b6efc4305a8a2f3cf4f46cb6386dec6ef257d. 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/GBKQU2362464.