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 0xff35777f71f3e03edba5b3b920e81c8f1c1385325dda93bc27db6af21dd78b75. 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/bc499c66-2c95-4c88-b6f0-a0b026bd82a3.json and https://artists.proofprofile.net/proofs/artist/bc499c66-2c95-4c88-b6f0-a0b026bd82a3.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 0x592ba1a7f508ecb6ba97752c7dcf62c913a1799ff3656669e3a39fd8531a7b27. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:57Z), 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/AEA0D1859636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df48828bda412162f5d8eeb208c7b2a3ffa52a6946d02358c6fb870381ee6ea. 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/AEA0D1859639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce10700669a170dc03e40e254a7e1e77f645f960e0243cb04b379fc5cfa88f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:38:46Z), 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/AEA0D1859646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58926c940c7dff15139cd0c1c34acc1293c72e48b5b17b9ad17804861c775694. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:37:47Z), 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/AEA0D1859647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe7fb67f583571f58cf6094de196770b09e32787ebab2817b7e68227ca79649. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/AEA0D1859629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21b2021b98834d57ca0fd151b1699ff42565a2a75f9af5acb3ddb2e7aa296cf. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/AEA0D1855903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05888f9a344b988c3d9b7a22d478089857c2827a4852dfece498bb2d5f4bf25f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:30:54Z), 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/AEA0D1855912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae7cf5007b87af9816ca46d3664ab71bcea1589ef50cbe29ffcfd2f2ac83c76. 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/AEA0D1855914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205148ff35706d1de5e1ec9b8227a7bdac0ad8c07f13ee76418b6a4df9b53551. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AEA0D1968364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d08da3500b2a0436be03ad5b25f2a24550c0a3ebce25bc7df4d1a882001e735. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/AEA0D1968366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572c6422c9079ab9ab52be415138064d655772fb83c0f4035830c7c938f77ccc. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:26:20Z), 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/AEA0Q2139650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ba1b60f5526fb6519d8aabd843b40f66bdb247ebdc3c6ac0cf4e68be9ebca8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/AEA0Q2139651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12fea31edfc465d33e6df1625e340d567603299e0446e6002be4b4e7bfe8322. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:51:48Z), 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/AEA0Q2139656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3330133912decf5a345eb12162e3dc497c6bf7cd9fc5eddbd5204d4fbc9cd615. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/AEA0Q2139657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e839530768de855277afce4a537866b2a8742fb19914016095126f0632a632. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:43Z), 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/AEA2M2267536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c3b5213ee71b3656fde7ffe65fa7da88b1010acdec5d465120d4914513659e. 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/RUAGT2401388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc477d00392ff285ceb3e63f85730634857fb4040f68f7962dea7dd313fbc9438. 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/RUAGT2401389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b742e7eb92e60ddf28c9c9784b742cdeacb25dce6bdf0af11c29ec1f08da07. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:21Z), 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/RUAGT2401391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206932b81c0de917f152505c25a0c7973dd889bc381e3d6ee6c45ed7e41834d5. 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/RUAGT2401393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653d376bf3f4cb5a13448be1ef50b16a1873fd7d599e8f21f780b5fdf1a4b1ca. 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/RUA3R2340796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6cdd786e0df310c6583908887e0c4c4061f5a677cf44a131fda9b0c34df999. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:53:55Z), 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/RUA3R2388068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fa00ad4c4b9b08e07196ead43482e9518b0a7d9e4d8c263ae38b24557056d2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUAGT2518403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a63168a7a1479b4c2af55910d34c2d01e1fea0eccc018b511f93621222fd2c7. 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/RUAGT2518405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d38f0f97eac0cfb7cd3d4954ca342938743604b7635adc130c7ebc4b58f03b2. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/RUAGT2518413.