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 0x3cec8800a10ca926d3e0969b36cc72cc4b47b6ff56743e70a058d9d9b13c353c. 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/f8254e44-ce63-46a9-9f9c-7cd112b7fc39.json and https://artists.proofprofile.net/proofs/artist/f8254e44-ce63-46a9-9f9c-7cd112b7fc39.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 0x4a55c34d4c8edf89f7dead7fbc938b3330957fcaa22ebe76658a9cd18aa3941f. 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/ZAA012000180.
Doef Doef (feat. Katinka, Loufi, What The Faf & Wortel Kombat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6affa6b7b4d90a4828c26e9519f36721e5e24e4393b6d40f679516327ea008. 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/ZAA012000181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec28fd4a7d01a1a8144905d4e5fe069b86eee56f9441bb4fdca0c976843f9fd. 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/ZAA011900136.
Welkom In Die Wildtuin (feat. Wortel Kombat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9703773a79bbe39274894703acd94b813937c2306ab722b9d12058907b122be3. 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/ZAA012000182.
Modelle, Rebelle, Junkies En Jocks (feat. Nicola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0da642b43226bb8e4ed3eaa34783c9af13583c464db0f7d8118b9830787ffe6. 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/ZAA011900202.
Volg My (feat. What The Faf & Wortel Kombat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161804a91f4fdefee8fd23cf0bde63b358342d36dab728faf43127de7387df8f. 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/ZAA012000183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cfcd18f3268773243dd07e4fbb3d8f15f52fc073eab19e00fffd4a67b320e5. 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/ZAA012000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaceeac9a94413a63e2ca17bcdaafe406eb3887c7cc96db1fc4b46ae4fe3b091. 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/ZAA011900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acb574f4907fa337ccf987ee857c13de3ce5a4c670aac3c4925fb83f7ec04f4. 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/ZAA012000184.
Boerepompie (Synth Peter Remix) (feat. Snotkop)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d1798806d4e02753dd58834bbd1dc5281cc962037daeb13e33c96812ca21fe. 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/ZAA011900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747a8c0023a02c4b8f2bfbffa139e7dbb931e470d33615a7cf4e2cfbdf74ef9e. 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/ZAA012300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58cb0e87c343fe00d2d9cdf3bc5554034fc6a7f389faa179c3215c25f5208c5. 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/ZAA012200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c43dbc4960503a88e554a85f017662be77386f93f59c24070daf895983c904. 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/ZAA012100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947d278764a22cec77fdfaa1c3c84f3728b177169fe751e453e47542635ac463. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP2047395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6affa6b7b4d90a4828c26e9519f36721e5e24e4393b6d40f679516327ea008. 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/ZAA012000181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cfcd18f3268773243dd07e4fbb3d8f15f52fc073eab19e00fffd4a67b320e5. 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/ZAA012000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0da642b43226bb8e4ed3eaa34783c9af13583c464db0f7d8118b9830787ffe6. 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/ZAA011900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec28fd4a7d01a1a8144905d4e5fe069b86eee56f9441bb4fdca0c976843f9fd. 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/ZAA011900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaceeac9a94413a63e2ca17bcdaafe406eb3887c7cc96db1fc4b46ae4fe3b091. 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/ZAA011900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa642b8a4342f3758395ac01a78f1af1f5a0d12959ba843f6e4b3262b5515944e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZAA012400334.