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 0x8afb22f36c3055063ff13e9823f304e3a925e7e1c3e9f3a58c38fc43934eb403. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/443f4c74-7d2f-4b45-a853-05b3f86c0cab.json and https://artists.proofprofile.net/proofs/artist/443f4c74-7d2f-4b45-a853-05b3f86c0cab.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 0x7defe6f1eb1df1513f4871258def141adef0b710faf5c3eb44e4a646d549086d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNWX2292315.
Drug addict (Longlivebigscarr) [feat. Bcm KY]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0b92ab2c8a0820242a90e05e87fe305b76ae27bc9af8fdd8807ecde767a093. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:08:32Z), 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/QZNWQ2399722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3b21a3c2a714753c3787ffea4658f841313680856d801a7cc683574e2586d5. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZWFJ2341868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd907c0e9d8a736cd10d0058018d5843489746160c3b8406b4c8064e127cc15. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:34Z), 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/QZDA52415489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde24bcdf2e4c85f8b66647af18c7870a6b2f89fe90a727d8c35f337ed78c3ec2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAW2472481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bfe4586080543119da5303fb3022a0f0d8aca4d481dfd44ccf47de933482ba. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZTAW2472483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bfcb1c2b0214be5e0a28e0c66177b4e16a34e0bea4c9455092c87dd6603f34. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB62444000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc80d2e8b0d1849346cbfe0222bc043249019ad218685e16e8d33fa1eb5716cc. 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/QZTBF2464489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0434f34fc8157eda7992a92546216903df64cf3e988ca8f4d356db8825347175. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:04:37Z), 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/QZWFW2472880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb5db4e2ea3064827aef3bd48523819709de580aac57feb1e2fe790b73982c2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZWFW2472883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9043375573b9b9092a78bcadddbd0c4dd6df932ece3d2b550881cba0255ca10d. 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/USLD91768604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4182e5281c36e6a919c043a1e9afc422fc0fa4b54515a86d5733a0dc9e13e5d7. 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/USLD91768609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85edb61d41367cfc18e92dc750e8b831cdef19db050f02f49130d70ebde1a420. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:49:36Z), 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/USLD91768611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9575c88ad0bf8f9a298d287604a295d3c9ffb4ebafe60f5ade25ef507336b0ae. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USLD91768613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64205901262e695e4287cdea7ed921ed0a450aaf09795a459a9f006cf98116a7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USLD91772316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d9565e422e04a9cf150cc928bde9732cb5a43935f22958bb9d97724e17cae. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:40:46Z), 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/USLD91774824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205acea2ffd55f86b7ad4ae42a91b5ef3cf8c68f5fa87fe95f0f725e43254664. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USLD91776580.
Sickest in America, Sickest in the Country
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23f277a19eaf241e31c9a4cce1ee56b2e3be888589932efa71edca8a09c0024. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/USLD91776575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fccf25a4310d5a2e2ac693703a0adaeedd887e3e5c3850282352134525bfe2. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/USLD91776579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851b0f61185926415bf52d237e4d4ab9f0db38f16dc41b96c9cab85125a1da0f. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USLD91776588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83680e1f427e9c6202e13fa699987230e8776bb965f0244bf6c901d04c12d759. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:30Z), 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/USLD91776590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fcb7224feefe7f5f035269562537965fd79f317ecb761ec3c533e0935009eb. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USLD91779883.
Sickest in America, Sickest in the Country (Deluxe)