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 0xd83708d2311fde7b1251e59b0b5325620f98bd7ca90f79c1766486bb6bd6083d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cb34049-1bec-4a37-92d8-2ca409fad485.json and https://artists.proofprofile.net/proofs/artist/4cb34049-1bec-4a37-92d8-2ca409fad485.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 0x7a08f009adb3da4d4b1656e906f2d01006af1f484b96f663f8c114c93a661ca9. 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/AULIJ1700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb154181df5d0e9763cdd7bec8276ed0df31547b8882aaeb28e6aeccf754aff. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/AULIJ1700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d82fc76ca8d20bb7519ede00197b378da046a6b23c968264db398352ee0c6e9. 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/AULIJ1700068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe1dd7619bb204b039aa166fdd936c88c119dc56eb993c5b82801570f394a46. 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/AULIJ1700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09528697ecf30e4f70a5a4794d7c8ed5502a2706a45c757929499d43ef1bdca8. 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/AULIJ1700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ec80ccbaa794d97646ce3f6b9aeebc4fc7b049d77f19b5c4d9eee935cce66e. 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/AULIJ1700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4f3cd91b3235b0fa8c75e7570204cf637035ccc907e0edba97a0915ec50f36. 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/AULIJ1700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35717e34013a19b3baeb77796a36f13d69482a3c43d1b872363743c1e2b1c179. 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/AULIJ1700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d9c161563c7a02251bd30921174e8c373fd1bcd21ccca1f5eb9e3147aee243. 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/QZFYY1951942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb4f5e84845ac23b64b51b789fdeba5ffd5ff95ddca10864ed3cd32672820e4. 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/QZFYY1951943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57a8f1ecc0b7791cb4bf22aa1bfd494bf5c25b687aeaf75160eb787901182e5. 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/QZFYY1951945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d642f91c96c6a36aec6183bc63808bcf79ea65fba70683a2bd922d756b158a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFYY1951946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff4cbeedf94cba7460cc0a4fb55aa03ddc1f2438408e4de733c74ead6996aa3. 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/QZFYY1951948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfc1f3ad001325985df191ac7f46da896637767264c1a2cb31bdd11def66682. 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/QZFYY1951950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea7e6d5fc995d14b8686f4ec433fb4dd3c5686aed0de4df7901d5572402448f. 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/QZFYY1951952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f6367a6850bd3e87370a55f7c6560719c370b638f0aaaaf1e064fb0b76ffe5. 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/QZFYY1951954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33c874a7647eb54cbe6147462a929f5ade73c1e3bf0f21e483edfa0474c0d0f. 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/QZFYY1951955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a0763853a293a85ff061316fd531ec0bc90df0d052c7734714ec7fd5be958a. 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/QZFYY1951957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7993239e52ac97eec7d1985072e7a8f57c881467d0cde172cabd04d731e216f6. 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/QZFYY1951958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc012bb00f5aced330a8908028ff15cfa502033c09f50f8a95a52eec0cf8501a1. 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/AULIJ1700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eac3b27f8cebc19f55e29709803d533711c2e3fb14019178b45632e937bae20. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:55Z), 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/AULIJ1700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5a84cfb5a8a02f5ca575c8adca229beb968cd488fd157fac1ad5ca8c1168b2. 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/AULIJ2300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8d59e7a103abd72df333daacdfe8c4bce0a4ccc04eafc1fe201e6edfd6934e. 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/AUOD21301254.
Buddy (feat. Bitter Belief, Mr Grevis, Mortar, Graphic & Optamus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e940c688f160b75417ee138c860ce05f27750846457e6bc6305badc1580c7c8. 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/AUWA02100414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73026cc56e7fb88bd1403ff0130b8826843f42b1a086c9bbd3eaae67903906fe. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/AULVV1700009.
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