alt=|thumb|upright=1.5|Cloudscape over Borneo, taken by the International Space Station In meteorology, a cloud is an aerosol consisting of a visible mass of miniature liquid droplets, ice crystals,
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 0x23d23b1c2148c8a80d92afcc5ff1af298c53242b7e84d13965b26257e22afb1c. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01fad32d-b09e-484a-be1b-77a25af42f90.json and https://artists.proofprofile.net/proofs/artist/01fad32d-b09e-484a-be1b-77a25af42f90.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 0xb7f9f7aef1b0d43173005d2fc5c3da26ee8aa39173291ed73d51069da6ea0d7a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBEKG0500134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39cb3a48152f2d3e57e7a8452e41f85438becb9cbb0f3d16c558263b0c4c630. 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/GBEKG0500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d928f217726d5c68ee40371d438ae7a8685b2406d2db60312e43e477d7237a. 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/GBEKG0500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbb9a53a4e764e77b489e43481c611ecae6fe618697beefd4af64d4934284b9. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBEKG0300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0da15c7efdfa70f040651fc03cfaf9888291f137d4fe7066140d42b55f916c. 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/GBEKG0300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00cd53b5da89fae0da025b00d7918c4d41b92d8ad6432bece7a69f8de394423. 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/GBEKG0600014.
Electronic Music from the Swedish Left Coast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eee6f8a119d6bd79af32ad0add3d55b0efff9f855ca745d6f1dde9b46a95bfa. 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/GBEKG0300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f89008b3001a54d6cfef01a4d92351c45b66e3482f057fb19edb4dddaf9b9c. 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/GBEKG0300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbb9a53a4e764e77b489e43481c611ecae6fe618697beefd4af64d4934284b9. 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/GBEKG0300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e828fe7bb29cf7515b3eaff8fe47cd0d0488f975683ba4c75ae8d037d3de5c. 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/GBEKG0300008.
Blue - Akufen's Different Shade of Blue Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981db8c8e2bbb833c3efe2f5124bbcbb5e5d005d80766cf9614ec3a4de631d66. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBEKG0300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800ddde9f4ea9ce667419c1ca8c32377158acaab685bc85aac5aa7f3440e2c6b. 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/GBEKG0300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab77adabf71841b968f642e7431b7cfaef5172501f4cdd0afa5cc6f3b2e136a. 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/GBEKG0300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfe1d36b01a7f88b69d75f650d0308b3361218378126ff92bd8cd76d7331bea. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBEKG0300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f161351e0298c5737f914460f94ddb19f2af1c78ddcc55b6f3b01eace8748d3. 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/GBEKG0610000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c799270b70efb9c7efcacafe3de5430179633cdd9efae1217f622a4a4c6526. 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/GBEKG0600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1362a1e1683ad8ea8fc3dc0f125ccc817cfc857998fb742b2db6c06b9e4498f7. 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/GBEKG0500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eee6f8a119d6bd79af32ad0add3d55b0efff9f855ca745d6f1dde9b46a95bfa. 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/GBEKG0300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a898d2f3d8f2cf571f99ed8e685962da3f01f30779e0cb80bd33fd04db1595d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBEKG0600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4035ef0e8718a78493df3d26f6d8b461f0733eb1749a64e0df323e071c9e46a0. 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/GBEKG0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc61c332e9969dbdea0e430c12f25742e6d76647335b22ffcc356de06643728b. 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/GBEKG0500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ff368e2ee9e2c436202ec9ba238d2e95273b6a327b68a67450668e7b4c379f. 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/GBEKG0500128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39cb3a48152f2d3e57e7a8452e41f85438becb9cbb0f3d16c558263b0c4c630. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBEKG0500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727df31b0af6117ef697121fd58833e4fcc5cabb7a390bf9225866ae1cc0f7b7. 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/GBEKG0500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80959120d9a8cf4dd1a3744c1c4eae5b7ac67929405fec0b84b26dd3c308bde9. 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/GBEKG0500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69ec7429978d79bcec23be0be02d14e8d5e6ce499e812fd89ed42bb85eec970. 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/GBEKG0500132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f9f7aef1b0d43173005d2fc5c3da26ee8aa39173291ed73d51069da6ea0d7a. 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/GBEKG0500134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129203e6735877b80ccf7667a1620952df689b9c38dead0fef27bfcefaa9a618. 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/GBEKG0500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1362a1e1683ad8ea8fc3dc0f125ccc817cfc857998fb742b2db6c06b9e4498f7. 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/GBEKG0500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3150bc8cf9b6406fba32133fde4d546a18ef498fe261e0606f3ced798b2c3f22. 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/GBEKG0600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4035ef0e8718a78493df3d26f6d8b461f0733eb1749a64e0df323e071c9e46a0. 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/GBEKG0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f9f7aef1b0d43173005d2fc5c3da26ee8aa39173291ed73d51069da6ea0d7a. 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/GBEKG0500134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caad8b0e70be9c1c04a71e9b7cb1d70bd0fdfcde7451b236fa5e91b2bbbc06c. 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/GBEKG0600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa723862bd0a7cbaccbbf900eca4c8de418d74190272e694b9714820a70495d66. 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/USANG2276125.