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 0xa61cb2a8f2d6c5895bd5126ab693743fef20376edf1f938ac056c4fe154bbf70. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5b38d36-f691-4142-b482-2c60bfa98dcc.json and https://artists.proofprofile.net/proofs/artist/b5b38d36-f691-4142-b482-2c60bfa98dcc.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 0xc4a7fbb9e31f1685374992abe7fc4174ceecff7d4882b3b88f7835ef6aa14820. 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/FR5E70500880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58900c97549f99cca2b614a3580c3aa05c5056d2ee3e55b17edecad2766d63f. 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/FR5E70500900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe0cf7c8dec645baca2657210ea7a1e730ed593ec97b78b6fbb0c490923eb4d. 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/FR5E70500910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71849667910e3d7dfd8c14184f918b938f37a933c5fb9411db76319c83728b9. 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/FR5E70500920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b59b0f8124283feab8aca04da5d5eae2a678a4c77f54dded1496bc8525f5f62. 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/FR5E70500930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fdfb1e4092ac2ee0ecd4afd1eb3b51e907bdd6dd0c1bc1ef666eb4f72cf230. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:10:48Z), 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/FR5E70500940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0f210f2748669c9cc40738bd400cf868c50d0d9a2b35e3155868ebfa670bca. 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/FR5E70500950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70121476dc383d0d0026dd7b2737367ea01f9f24045143831cba5f90100eea8. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:23:00Z), 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/FR5E70500970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7805bbc0d5d5999cabbfab0f1b78bc6f61b4434dfb5db25b374c3f0ad18ebfa. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:26Z), 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/FR5E70500980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c5f65211a8b2634fc2b7a2f73f27852c3e7c42758759d6e6b8f7581eac09cf. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/FR5E70500890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433106a631550733bdb8437e3abc4b0b5a720980f63ec15b3ce2efd127d39fa5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR5E70500850.
Gilles écoute un disque de rap et fond en larmes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a0291782287dcdc2a9d118142b7849b0fae0a4bb5d0b1bad23f922e923d67c. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FRUM70801613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd2c51d04eaa52e59e0efc4625cd2c910a1e1a5dce0c4a8e8dce078a9613271. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRUM70801611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e20467dceca301190afbbcd47a659866613443ce8e801344d85b94a041a9c53. 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/FRUM70801617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d52f6c6a230221b96ee7ea5f3dd0675923686e6f534cda123e29303e2a9d80. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRUM70801616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb357cc55afd7645acb4f078f296dfe2d2800063d464c6370157ce9f7cfa6aa. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:27:05Z), 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/FRUM70801612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf475efa80786d4550c7a45e5d880490e7b7e530f9b00a841f5f3ee4a5e4a3f2a. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:30Z), 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/FRUM70801620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539a32820b73a56a9bd669f36b35b78f9eb74bc70dc903102572bd8cfb2b220c. 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/FRUM70801618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426e704cc40eebbe66cf7b9ee9ea0dab8aa88ae88ab6a4993a675cd380730c31. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:39:19Z), 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/FRUM71001683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d5bb433b4493d0989a00a205bb3ba21a9db04f8fef756515d2d1290a8def0a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:22:05Z), 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/FRUM71001693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6100cc34889ee93d629a88f1475ee05037717bc7e70e6b1feb142cc9a7d83cb. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FRUM71100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60d3fb858509a951ae0546930a9da6792d7fd9a74e00d8dacfdd2ca0adc49c4. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/FR2MF1500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fd322b5adee63c0f63e350de2325b4672b3ce54fd48dd24eb1db4454dc482a. 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/FR2MF1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e80cd8957cd0cc66edf5d90b428c99394fe3c0978a39029031a28d34d7dd29. 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/FR2MF1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ae4b26571ffb1163510c4b2ae13f585d2d0645046927efadf433c4f708fc8f. 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/FR2MF1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b395a9f43a924c7a044ed443654c613d831fbaf65870527bc0ce34c05f0a8b. 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/FR9W12300752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2df2893b36bb1193cbcd52b744c1febd8e984d6b219e2c5cd2f1e68175c1449. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W12447946.