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 0x76cdbb2cb90e16aa14680b8bd2c0456740092a4c5497f55a321adf18e95ca167. 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/f93e6868-6fa8-4b39-8a94-c8c61e6999c4.json and https://artists.proofprofile.net/proofs/artist/f93e6868-6fa8-4b39-8a94-c8c61e6999c4.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 0x092e72070d5e5cfbd8a43cbf92a3650d9660de988f6326660e511c2f8b125c72. 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/FR9W11627267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a82cd188d6e50311e9d708f3997d2f8a6a92e1a6680d93b7a484c281520349c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W11812015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322f0f4277a40bb65f233af36b117e8608179948b6f106327f3e8a21a9b96d30. 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/FR9W11627268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0623e3808520262ba3b8ff31775eb551273e7aae572a3b0809bb82a06d21333. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W12324996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb631d31c5f613ac80ac8c68f3160264023ff75c4a5c4b9d2857c003281928587. 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/FR9W12324998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cb0c34124921445a2eeceb3865a8cf44cbd335271cbb6ec25a9017e9c5223b. 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/FREIL2300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad35437a8ca41a479c996f4f90caf83d2dee8322f1d81d0190cd3feee2ba57f. 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/FR9W12324995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dde1ec7232ac7a936bc09fdc5aef15e3b9b5c9cd43ff09a82677019ce1e163. 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/FR9W12324999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f573e7a202415a20f4856e465303734a1fb7650897fcbe3624092ed697adafc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL8RL2304109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4302b3adcd45c27ada5a7fb1e79e9310220e52802101ec2f9f3b56792923c96. 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/FR9W12325003.
Les plus beaux matins (Friends Covers Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969caf879f45fee571e9a537a0965ed9303a5fa9679e251adf649e0e1b2e95ba. 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/FRIDO2112820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b50fb8876cf25651a668ad189ae25850dfce2c385f7a165e2abae5154054ff. 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/FRIDO2112823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f80cb25e0e0f7f61969f184c5753fcc7b4f1051d92566b4107c64bcfa9636ae. 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/FRIDO2010360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824aee8e11979934d6d7fb42e16c004010081768514120ac0b6f8b20ae738dac. 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/FRIDO1912152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb631d31c5f613ac80ac8c68f3160264023ff75c4a5c4b9d2857c003281928587. 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/FR9W12324998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0623e3808520262ba3b8ff31775eb551273e7aae572a3b0809bb82a06d21333. 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/FR9W12324996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f573e7a202415a20f4856e465303734a1fb7650897fcbe3624092ed697adafc. 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/NL8RL2304109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3782f229f0286e1882ad4fe2190f0f20ff50d951588bf481e1d48d5fd63f3c1. 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/FRIDO2110353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fdbafcc2d59d51f800657087fc598c7317d0108bbe2bcdc22da474b97bebaf. 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/FRIDO2111440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e0fca82335ce66196b377efe4e38d532b20677f372c4743867bf9803f9ce82. 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/FRIDO1811444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0f55a24e86091cf02b5fea618bd23fcba6005bef6472295728b7ca7debb31a. 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/FRIDO1811803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b9bb700fc9aed3fde8d0ea9d30f523c21a65fc443b6ec5dcd1df1c2ed60684. 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/FRIDO1811804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9230edd080b3a64412423a349fde3d64888802d01730ee5d1d56e5ee1695a68e. 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/FRIDO1811718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78032d06bf05274fd72c8b1030a145662c8eaf9de9ae72b6c060a73fe459f3dc. 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/FRIDO1811719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572064104eaf4f7a3e0190838c5fbddcbb4db23f6f303b5b60654fb8cc4b7f4c. 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/FRIDO1811720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce843554ebe2ae94f0d583d0a926e738e298d62a9a195c804cadc28fd280e714. 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/FR9W11507695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175082be50536dca524bf308e025c3e0d21abfc9cdf26315b90980e5af36b7f1. 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/FR9W11910514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981d93190b37d17380cb631bd2461c3108f698af41b88e10690baa954a2a1674. 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/FR13Z1800000.