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 0xafb987b6f9b065e2ab492ae2493af763cb10a47c316d3a8678b79f19928ce5dc. 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/ae578a4a-2b8c-4699-8428-995b4d44b2d1.json and https://artists.proofprofile.net/proofs/artist/ae578a4a-2b8c-4699-8428-995b4d44b2d1.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 0xfb8f3093699d4b67778f965fb70f3ec390e9a128874e129a70cea8b6359562db. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCACD1593598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f9d54c3b13ea930519c976aeccb7544193a5893f5268f3be1a5dd1691dcf23. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCACD1593599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b61469961f215570d7c7ecd0cfefb8df3731ae374468bc225143617fcf99cf. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/TCACD1593601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6f479597bf529bedc23db07dc47ceac9837b3a60239994c25a8a2f056ce787. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCACD1593602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf170e987994855e7c0aeb4416c9e4a4205fd843c669285b2bd31bd632f30a5b3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCABW1435743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436828b5483ec6b426673a5c2fe079c93493b7ad9345e12249159905aef58059. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/TCADG1798449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e4a877e3991bb67dcd4ebc3ddb861f98cc4b25d494895e4455b0cac01998d5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCADG1798457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7970ce26a7b9dcee9cdc394411371ca8da1b452420faaa5b30575a4f8c62bd. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/TCAEF1992443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7ab5451790358d0774785e0d98ebb6dddd0c745c2b8919e9d9c3e6d4184d46. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAEF1992445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6222bca97613e2f5e52c776d93c063d40a40fbd33b27a52f6141ac4a534fb7dd. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAEF1992448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f24f18edb141629d75e2fb1c6d9401ffd86b7791af3c5a2ac37143560550012. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAEF1992457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f76eb4cf5dab3653a14969c8d586ca73b3654645d7da855a05c799b3e1545ae. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEF1992468.
Criminal (feat. Danny Case of From Ashes To New)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd0750a77a27414ca50c5819ea16194d89a573ab4904452b10156fda608e2eb. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTPX2154819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2552ac6e336286ca8b48642676d393e9da40f544669e756333e37316470c48. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZHZ52229031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec89aa09fc17b22f434acd3a190ff31e368d65763dec5ec76a03ed91a23de6f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJX2268594.