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 0x62e7fe82e81cef3e84d56b04316fad91df590bac3bd9eba2e42151fb32fc59a9. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a6cd23a-51e6-4c78-9aae-200c3d83b665.json and https://artists.proofprofile.net/proofs/artist/4a6cd23a-51e6-4c78-9aae-200c3d83b665.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 0x847b2817bbbd1fa313946e500affd74184579f17eaf25de5ac767ece27866d43. 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/UKQJK2210604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50d158e97d789e3b102a4c3befb1046da90eeeac92fdbe6493ba4fcfae20551. 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/UKQJK2210605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650e6aeb0ba483684c638d63a836e2b313c935df6536efbf23a268822c7b453b. 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/UKQJK2210606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb279220dcabd750a6c05c76f7a20f62c3af3fd6955eecb6973fcd0750e46b08a. 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/UKQJK2210614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ecbc2d8ef3c15fdb2f4d7373d8bbaf396f6971757ba445c6a757553f538373. 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/UKQJK2210601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22dd153d3a9952b066b5048767749fcfe70ead9233d016731ce65a71ea16bb. 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/UKQJK2210615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ba5e1289a69620d75673897749df4f6c8588d2015edd4192f3459497ad73d1. 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/TCAES2014440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34716ac4d9f318363f78707a060f28e15624e32e2d455e3a0f4175f3a6b08017. 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/TCAES2014443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352b90dc8a203b84594628e8f2e21f7051699e5265386253346457e7493d40db. 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/TCAES2014452.
Good Thing (feat. Christina Matovu & Called out Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ed72b05af24513e72b9d794bcaea43d9185c66c809f529f10c8e4b26a97f9d. 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/TCADD1750068.
Here I Am (feat. Becca Folkes, Faith Child & a Star)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09f5c21a817fc85e3ffc766cd0a223a828fa9d221cd4041e78630bada2cf1e9. 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/TCADD1750070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84da2e18640b26f2b82eb9ec36b67fe83d354f12578f24ab62bad5c318ae20c. 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/UKW3Z2302818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ea8cc1b8d3ba046ecc76ce5e528d5bb316f77b9e7cc88fc806091809caeef9. 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/UKQJK2311100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ecbc2d8ef3c15fdb2f4d7373d8bbaf396f6971757ba445c6a757553f538373. 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/UKQJK2210601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f74a8514feb197601f9fd11dabf507c16cbea8d3282cc5204e7d44b7373a34. 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/UKW3Z2000409.
Never Let Me Down (feat. Hayley Cassidy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64c17583dda8ca5d1ebc1271a9bf854bc01431d6f02134975c06f14de9e7fe3. 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/UKW3Z2400860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c852f990ae3080730516b9469c462949f4e7dceb4429189c1fc528e485f8b3. 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/TCAIK2446345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84da2e18640b26f2b82eb9ec36b67fe83d354f12578f24ab62bad5c318ae20c. 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/UKW3Z2302818.