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 0x8da8bb6a00299b622f4a120064c33eb5ecd3da40e80cc58f18212438cab66f83. 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/915bd31f-4d19-4239-949c-aaafcf50e618.json and https://artists.proofprofile.net/proofs/artist/915bd31f-4d19-4239-949c-aaafcf50e618.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 0x77011d7e68978b3727e73450d051f7ffc7aa764fd8050a4820df6b58741afaa3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:16Z), 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/GX8LD2288176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115345d55bfd77a61d20f051b5274a153d5ae6b093841068d3fd9cbc3c164a99. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:24:15Z), 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/GX8LD2219758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237f4393c3583cc6870380772307a7199c1e81520aac713fe72ecede6e92bc97. 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/GX8LD2219421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddeca6017dd54c4aab7e75fb3a16b194ac700a6928652c52ca56e1c8da482dc. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GX8LD2291506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197529a024f8ec6324526f6e21e53c1912b8b353334aee42c9266143793d1216. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX8LD2226671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f47bdf2b5b48531b539f44c86f9f4adb29583dc3d8afeba1d2e9da43b0d1f34. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX8LD2213480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2c8efbbf126f92d5021285fe7a41f75d49018f5bc5347c68e56351d8862945. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GX8LD2230533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081344d33d26ce338e5dd159135b0167694257fe2cf55059b03c0a4000a7ec9f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX89G2230006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ef6f2abde697691ab2cada3fb5bad9c30f996adeaffb9b236d630ad763feb5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GX89G2230007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4d565de871cfb69d539cf6ce58150fd6d6ce38a44f2f7c93c2fde4d8094dad. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX89G2230009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3482665e86b76ff9f14c464fb1e71f8e969b46c8272bc1afc1791d06419c165d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:46:27Z), 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/GX89G2230011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02473d18e8c108b2b5a42aadf34c964b6f586152a3fbcc89eaed41411f25f2b4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GX89G2230017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacff7578422af6aa4e638c92b6f65bcec8a8dce7e579dbdace9a6a78eee98d8e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX8KD2250471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c134aae7d13948c5e9a407cd56cb9fbd5abbbdce886bad9c28274de578431a3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:36Z), 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/GX8KD2250475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b823b7bd7ddc8002baeb4fcee66eaa4cd29b73fe7252b50493ea1d27a9a667. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:50:10Z), 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/GX8KD2250479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec363a5b4f97fdb6c6395b2127b74c2562497cbaa08ddd478db96dc7cf74ef. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:16:09Z), 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/GX8KD2250506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e8d27bb1107f81e7d46eaa3f5d2a60d21c1aaff70b8ba38a007d94d93b7197. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/GX8KD2250528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8781c7b2d90a03f49f847be883768d6f115489eea258a519c0d410acac3b692b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:47:32Z), 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/GXBDS2327035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0655a2b51bcf1c220ff204abb3279ac8f481e7fa0bb2b5f8880b6d1b4b510f07. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:09:56Z), 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/GXBDS2343696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f1f0fa05a8646e099ac18a27d5796922aec5df26b22e8a23f830b93b54cd83. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GXBDS2350541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a31e4a5b25809a819c5782324c18e4d2cf005c0f3c5af6a2469e2f124c4cc8. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:22:38Z), 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/GXBDS2372835.