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 0x0329aee6e814ca45800e2a3caa8acb2e592902c0567281ba1d933de9e753ee71. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/baffaa29-82e0-4e8d-aef3-4d55fbb60d6f.json and https://artists.proofprofile.net/proofs/artist/baffaa29-82e0-4e8d-aef3-4d55fbb60d6f.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 0x2ca7115da54baacf28bb5f8180bf3892789ee2a71cc5ec85c845e994779ef260. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CNE021300505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a19595f68bad285e194e155266079cb86859cf3faeea21297038e2dcac36ff. 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/CNE021300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97b002cfabd11ae588d95107cd4c97776d98a7e436dce17c82645d46e731b40. 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/CHUM71700528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc893f7c85719971f413c957e453da8190963c17eb82cb163fc4203052e6038d. 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/CHUM71700531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1948cc381608c40f4d87e6ad00bf9ea227686b78215e5a5c3708d55d0d99e30. 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/CHUM71700534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca5aefc30c0454421990e3781ede735ca55991e68b1b42f7cf5ed678ab0c751. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CHUM71700526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181866b22ec6b7d88d493b62356e659ac8380fe37fb0f94361e30a088aee521. 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/CHUM71700529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaad37cffad25cbb8ea16c5aeadd3233516ff31ca2f6bf6d97a612272dfc7455. 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/CHUM71100856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73ee440691a0497bbcbcf47fadee63cf35fd4b115d267852f9c170dd732d902. 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/CHUM71100864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9780c841f57eaeac327c3212c238b8bd8bca69bd7157e8191a2d11e005cc0a25. 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/CHUM71100865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcab2e46b995e6f1276ca3241ddb8a6affaa748c8f91d9401636f537940113e6. 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/CHUM71100582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda42b6e0a326583f0f5fa3fe069d1dc111e63dd712b8e5e873f455fdde47a2af. 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/CHUM71000791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140e1949f8c4d07c1aa90bc615db5b08f4b949c92ad77667bd698222444d58a0. 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/CHUM71000788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd349c18c389cc7870569063f657221d21cf16387f7ece3d73618b957df93d543. 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/CHUM71000796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bf9d87fb811adcce4c5b44df9b36a211d0932e181e34c619ca9d9cfdb6d1e4. 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/CHUM71000794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd9e8fe2d7f8a13154f7a2814ff239a6ff65dc238588dcfb9cc4e19ff14c45f. 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/CHUM70900643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe10525fbab8ce5d59d788395501992f8b2b90083c23a44a24469e5fa8be280. 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/CHUM70900642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cae2261c5e2bf68cf026c46b6b879c7758d449ffd35b1d690518dc21edfe1f. 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/CHUM70900649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36ee9f50f4c0dfad748274b453d01265776a3677d0d88721d86c3db59e01d26. 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/CHUM70900646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55c31adf8f2d129b209204073a9e40377cf833d78f926a3b8fb5b241436b997. 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/CHUM70900644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8ea34e5cb50d1d07dc3d1c532c377fa6372bfa843877ca19094199f8a6b683. 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/CHUM70900640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c178ad1245d32eb2a1f09a75a54066393c6b5b5581e5cb3e046ebef1734d2b. 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/CHUM70900650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d8f87f799e8b5a7ef495b860d9325ac14d495f15029b1001a6e1b404db10ac. 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/CH7812413475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7dda2580aebb0b5f23d36ff53ab6a19349545718787d61e72fddb3d920eeb9. 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/CH7812411954.
Die Schönschti Cherze - Christmas Special
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bd09cf96c6ff80ddb40e32984d302ea9565a090338203eb27792f68a8c90ae. 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/TCAGP2224429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf688c10c79ecefe3e2524067eede5cfb71f0845d766f2b1b882c4447fc5c940a. 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/TCAGP2224559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c2566945dbbbc4108adb3da0534649025c31f2344033dbe0e9dedbf5cecf43. 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/CHUM71800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1948cc381608c40f4d87e6ad00bf9ea227686b78215e5a5c3708d55d0d99e30. 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/CHUM71700534.