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 0x906c1512ce8bcd66d2f18a6717ed4d1795767e070644f3bb3a5b89a61b604faf. 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/c8a71a45-a9d4-43d1-9adb-52b2ab3ba1c1.json and https://artists.proofprofile.net/proofs/artist/c8a71a45-a9d4-43d1-9adb-52b2ab3ba1c1.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 0x6e5bf88167729a18668957916471e76a9820a7c745fc5d34ace6d15447e6c69a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYX2037917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cd402bdc28b0fea3f87f7c9148ab6506272458f8c27b05b828ed502c447193. 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/QZHNB2106051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56673266eda03b06db1f5d51b5ef4dda0ed1b11c9becfd06b08aa2a8fa1fe710. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZNWT2173630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedcbe71bba88cd0495ddeed20e8fe5d6a7e11b5d431302ac931508b27c6b660. 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/QZNWT2179182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc0eabbf4d2881efae25bd3bbeab54c95acdab609cb9d1d8ad3f10ed008afec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ32239248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba7d81f5f43bb1942e99d0d9f9a452f728c050e31f41f2c84007ec10e4decd7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZRP42266508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a40fb7522be3e58258e3d1cfa8136a7ad4437dffa52fb2429655b34321f320. 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/QZRP42272720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cec0e722ffb9111b570c6e71ea05b25bb9fd99b9c4f0d8d7c77a5f9735b855b. 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/QZHN72382125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc221686cc221fca494caf0fd0a1ca9563f1b04c6a40c5232eeba697a147184e3. 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/QZTAX2358367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58521086057d0559b0657be33dd137077649490c364b51fc0ed8763b82e71a3d. 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/QZDA82514730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d90374d25606a22cb79c1ac70a069a8b0193afda0c0c1577f473daa0723065d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHNA2507177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff285b3188cf27da4e9dd73f7cd9b25720046eee29102043e2ab032a5ea98ce1. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZK6P2524187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d320e5882102b6a54f4c99ee6e6e3645406ccf5cf209e8bf3be9c348c352333. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAX2580690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87e00677e9917ba1db6475f25c50174e1cced42776f4ca635c066d5e2d9accd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:34:17Z), 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/QZTAX2580691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521b78d67343c752941ef599505a48acc9e898b8913e7f403f4709ddca7ce9fc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAX2580692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aa8f52997b097f03aee385c6483ec3eeb8015410c2229dfac8b591409509df. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTAX2580693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dff89ea4bc44b9c0d6bd2e15785013262096fc9e0b31bbadf93e646f8e02d2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTAX2580694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a097ec542f6ea1ac39e32e87e8afabc115cc4e18ab2f0e296339d7f471557c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:16Z), 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/QZTAX2580698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28ab7c1ed4b9812eacd6277f168a5c27657538f926683e4821bd97577bbef37. 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/QZTAX2580699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977ff1cc9eebecdb91562b848e0e8fbb09b85e4eaa776a3cb2703e95c4592fc7. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:35:31Z), 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/QZTAX2580701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3919a9d5e177960357b3b220c4c53c9cfdc6191f544d4840c4c7f69f341a043. 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/USAT21500549.
XOXO (Music from the Netflix Original Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08386d16bda4ca7852d0db5142ae7ee3a11cd7136aa549905fee46946c7db10c. 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/USAT21602324.