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 0xb36f828ef23a2581b59f3e9daba5d87fb6f31ca61032680d1719cb494ecdb638. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12954bdc-9240-47fc-9393-4952b2fdf768.json and https://artists.proofprofile.net/proofs/artist/12954bdc-9240-47fc-9393-4952b2fdf768.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 0x637358e0eec53e1dc4d2d4dbe67e1f0cbd9724590e9834ec4b43bdee6c23f205. 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/USDY42254615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf002216759f41d33ec5938c0c129f80867b4e5fe778cf4ce4ba102ab2b837a. 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/USDY42254618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4f3e7ddb7504ccbea109c2a4e3cb4dd7a3a989665588e1c586b394d6d95382. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDY42254619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730102d4569df37c88c40e40844f454da7da1c2be02475a301d841cbbb87dd4c. 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/USDY42254622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b4cb1c59ad457d9461e0a26a8a64a5a5ecbf1e5d40460a2c37ce0a4f89e79a. 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/USDY42254624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33782fd67c8e155032b3b24076897bc571e6f627654affc5b17c4d955187867. 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/USDY42254626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58609599d0952108d701f912b5d7493febc762d91a7d9b208c898a9c7e70444. 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/USDY42254628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e744d085cc608f9806e7207b0ecd1789af8913ca65ea8110b8ba5af0e06638. 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/UKFYA0207001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709eed3522cff8f4b2c99538fdc26b15164e67cc49e421ace149463142b5b9b3. 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/UKFYA0207013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed49883068e14811cabc149a0e0da5a00a0efdfd8f0eee9f16d6f27d26c1539d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKFYA0207004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc653d2623eac6667f4bc9be4e091e2bb94b0302d7f81b29c1902002242271fa1. 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/UKFYA0207014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08857a18b208beed6e41411da9cb31268d426a7a33aa7352dbf009e320cac53d. 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/UKFYA0207005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca9dc393efdf0ab56fa0c081f1655f015ae0f06810c4de706c6edb776a19c8d. 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/UKFYA0207007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11a083e23446b2d7c44c03158c8f1649b521777a53f109c94ed22e50c7d4bbe. 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/UKFYA0207018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d517ddf07647fba40da71d1fdfbd74c4605317017a2d3c9656de3be38d20fe. 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/UKFYA0207009.
Bonus Track Sugar Gets You High (French)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41da0a629677aac40069fa537d371ebd72eed8c3345d7241043e61679bba187. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKFYA0207019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048598f8adc6812aaedc280c653fe37561e7f7e81d271f846b30f3012a1eced5. 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/UKFYA0207010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdc0bb34904c317c5713855880c00c5fecad2668ff2d8aac7c81432aa800c67. 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/UKFYA1705001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d2b93e3fede26432bd130df815ede329af288279573f61ae0764ad6fb44d7e. 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/UKFYA1705002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd19fdb3e533dfe7b2756b1a5e25435653a72c1e7dcb3c127213674c96d76ce. 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/UKFYA1705006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fef2b4a6fc0a87aedefe77f44db67f9b1d11b57bd04cc3ff9642bfebe099e0. 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/UKFYA1705008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bae12b7a5aba8fdc6bb97243a08a793fa43fb9beea4527a03d9ddc4509a851. 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/UKFYA1705011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06a2ef7495f5dfe43ede339dfd6d8be0747fa2d4ec3c06b93cce4716bc1c955. 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/UKFYA1705013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113d4a3d55068e40f9ee900fbdadbf4f6b2c0c333e9433a2871d95623f8146cd. 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/UKFYA1606002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96414c1b41e2d01dd612e5c73c8c0f97203cd39cc58eef786c364573dc09b9e. 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/UKFYA1606004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59f4d51e11d33c996070681a7823fd3764e7e391912ce14be07db47399567ac. 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/USHM21658371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadf958ea9e8522d756032fbaf3e958278efbd6b87e1e0c53821fbcdce488db4. 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/USHM21658374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6c4412f3107dfbe2b2db81af1fb30d58f3120eb19fb0577d490682a9f1c922. 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/USHM21658375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b1cc6c2942a669c0e8ee09caf823bcc4042a8f4b6dcb861282e8a89d1067f8. 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/USHM21658379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b630444c3549f92545aa21934b61cfe0ebd89060f7cf8bd0690a1e3674468ed. 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/USHM21658381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d29b510a104e2a9a341c3e0c7664876b49ff3edfb1dd2c5cbb78903d7edd376. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ZAUM71100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aa1c25d935078f0b4ed8984c874eea20bee78c6d40d017e9ac09916eb5434d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGJ2218481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113d4a3d55068e40f9ee900fbdadbf4f6b2c0c333e9433a2871d95623f8146cd. 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/UKFYA1606002.