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 0x896287ba0dd56e414d442707560f8486af7ffb6c5c158db5a1e5075851472a6d. 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/595165e2-1c94-4204-b8da-543bfb5ac057.json and https://artists.proofprofile.net/proofs/artist/595165e2-1c94-4204-b8da-543bfb5ac057.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 0x0ad591d3e3b47b8d4539faf645ffcae1dcb7111298fa5f7b83c649630a87be5a. 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/JPKI01117422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265aada81efbdd61991bf3bc59986247542a93258eeb61fa44757aaee68b409f. 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/JPKI01117423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00005ca80766d6e578f8828541b528735b4dea7b545a855fe06a5c115f984b5. 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/JPKI01117430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35b9689369b5d2e417fdef21a8adef4aa60c19c0b765edb24e259a1cb3e8047. 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/JPKI01117433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e1bdb5e5b152ceb2e34645ec05e7eca4830a5574e46b95bc1e0d85344a4ef6. 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/JPKI01117435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af31585a982e90e7c42c3123062fdc0a4d601b147a843835e7eee258aef2438. 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/JPKI01115756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87046b86d59ed04de2b1883dcb478b077b56bab85adf84a98aee4c30655825c3. 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/JPKI01215935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87046b86d59ed04de2b1883dcb478b077b56bab85adf84a98aee4c30655825c3. 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/JPKI01215935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdb4a8fe30ebe34b1cb1e494afd692a01292227688c614428ba9dc15dc7ee4e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPKI01218054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52b7aa5e7133ba8439e62fcd0a1a6a262fbf801ebda3fc7c239da52591153e4. 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/JPKI01218055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc627d3be1d33f353bf2543f3a47dd6fbfee244459b4d3bdf262a01fd6bed62e3. 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/JPKI01218056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d73b06e1dfdeb1429f0b24dbf6b9188d3c3438e6438d11c94c2e7c40005a7. 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/JPKI01314072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eeb48e5ef50a2b79372bd7d92668f0c9fcb3b45e6bf7dd40cccfc76d04378f2. 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/JPKI01314070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e137c9c3ad3956376573162843953981874f6ab286223e78d8d41b34f1b1eb0. 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/JPKI01314078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bb3ba85744bf3c7147059f57684ea72117035ea50e01360ce2b0b8945823ae. 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/JPKI01314074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc919d89a55d723a347db5e11ab3ebeb55e22ab287e00761675e5bc67fa97b657. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JPKI01317452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e00c02953411530a4d4e7c0f823a9b1412244288461193ec09abb9c2e9f4fdc. 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/JPKI01317455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192cade918227ce8ed7876e68aa383dd146a6d6127a6ffe64fed70ab2eeed1fe. 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/JPKI01213553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cd4a820501c1b124aeff049955f0125ce1cda2b394f288681f723e6d7ce46e. 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/JPKI01211535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad591d3e3b47b8d4539faf645ffcae1dcb7111298fa5f7b83c649630a87be5a. 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/JPKI01117422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1248a318e55bd2d39d67749023b0d63caeb43883beacf65a5b6f9665cf6f03. 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/JPKI01217653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192cade918227ce8ed7876e68aa383dd146a6d6127a6ffe64fed70ab2eeed1fe. 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/JPKI01213553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af31585a982e90e7c42c3123062fdc0a4d601b147a843835e7eee258aef2438. 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/JPKI01115756.