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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb850057fae6284d42f3287c55ceae0fd3529426b095fabc43f86ad2fdc9ca916. 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/aba388a5-53ae-4fb2-8539-f7ce795e66aa.json and https://artists.proofprofile.net/proofs/artist/aba388a5-53ae-4fb2-8539-f7ce795e66aa.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3392808bebf77b49861b672a7ad091c9a12c258e1a805680450e3aa77490ea2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2P2444857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b965d375c6df3cd1cc40d620e04c78e104490afe082bf058ea70d2353eff6ee. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USA2P2457042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5fdbe86c3ee2173e12d7a6e19ad2e03e58478775737033a5326c6846bbbf15. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USA2P2463198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c73bcac69af685fd8bcd96686d6245f4d213dcf0430ac1bd7a2da4663bacd7c. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USA2P2463199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d02c896dab48441623c602537b9ace1e1ece03bac58e5bfe5373b6eb70ce20. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USA2P2463200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61fdb57576b309544c52ba0f79d37627f4684a59dcc261e9a803b4b821917fa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2P2463201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fc32a1c985b4b629178d57393be6c26c3ed224c177db8b7996724d90c41016. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USA2P2463202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908f28f3b0679046f901be8ee231240a7a577a10ad7f967791c86b0f30f76e27. 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/USA2P2463203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241fc216dda0b10eb33f895e2fb0c5b6317b210df5b2c9fed028c55440d736d7. 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/USA2P2463204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3392808bebf77b49861b672a7ad091c9a12c258e1a805680450e3aa77490ea2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USA2P2444857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13de83716efe1c0d21f41d9c1fb8ae574ecc3ffeb2b2f39f5e8e866e5f8b6b0c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2409883.
Give Your Heart A Break (with robbietheused) - Rock Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7b8c1be5c663f43aba0fa83e6f798f69663803855f54e1db5a1b728c84d2ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12303427.
Self Sabotaging (feat. Bert McCracken of The Used)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2057b1fbe7d5ff4d0e34d3fd341bf9064565cc13599f444067fc1efe8c5ff4f0. 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/QM7282345876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2057b1fbe7d5ff4d0e34d3fd341bf9064565cc13599f444067fc1efe8c5ff4f0. 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/QM7282345876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13de83716efe1c0d21f41d9c1fb8ae574ecc3ffeb2b2f39f5e8e866e5f8b6b0c. 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/USA2P2409883.
VAMPIRE'S DIET (with Bert McCracken of The Used)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bdfc7f5831739b82235e197b4f13f61fb5aa4da68f78c2b78f206cd6f3da57. 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/QZ47A2000810.
You’re So Ugly When You Cry (feat. Bert of The Used)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964f6ade8d562168119422ebab226f5552b0cfa317406f4ff92f5095c512c98e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDPK2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303e2eeafcb92463942a9f28cbfba28eb780db64f884e389ea7978b1dc07a3a0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAFK2151511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de2143fdec18f816591a4bc361940d6ff347bb8149c62323e4f7a517dc74694. 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/TCAFK2151526.