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 0x48990cfe4af7affa2e00d9122d66064903c80ce819f0d08f504393d8791c70ec. 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/e1b0060f-81a7-45c2-972f-0bc9bc6dfd32.json and https://artists.proofprofile.net/proofs/artist/e1b0060f-81a7-45c2-972f-0bc9bc6dfd32.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 0x2989e00d4bac6bdf67610cb6efd928f4018be165555c0ee276ee010a143eee3e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:05:37Z), 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/GRUM71701377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bec2c7bd04907861fdbcd8cc38eb222940af65ac9463a1448af19b33e1c6a02. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:31Z), 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/GRUM71800351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471fa25177e8779b7e4e68ec00c277af038f831c84447d01e8ce1a551b1e511e. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/GRUM71800696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c978651c70e3d4ec2b6ff53a284d4e7bce64a3b0bb4e198c8ed56230c1f087f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GRUM71801410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8573be05af397b3d3347f21c3cefbc5653d22ca173ec2c915e5aed43c00a4d0e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GRUM71900524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf778c99be9648aba5186ddf3b731a844571fcfb72eccd353aa728722a0a9cc2a. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/GRUM72400454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d2066245c34168220507407f885b8b02643e78f385eeaaf5f82f8182e080b8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GRUM72400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac5e62a6c21bb67cefb1519778792e15b8ff26b36220fe6597f7145e688cc03. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GRUM72400456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8162c77092109223633dcd3b93923fe71ed241db9d939550f65dc3f82355981. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GRUM72400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80de2f6001f7d5316f4fea23668f1f730d0f3ebec3754fd4e8e3a87aff10a042. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:00Z), 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/GRUM72400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32da7316f2b95c76a37dd166c01d38aa803af874b18ac3808b22a8771397ef70. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GRUM72400455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79f6d25ef62f409e829a96ed678dcb5b4e71f71227de4731f1fa4f0693b86dc. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:23:17Z), 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/GRUM72400451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf898f44701cb4f80a06c73932afa306a41bc7978429a906c574ff5fea9868700. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:08:44Z), 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/GRUM72400453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1e00dba454c8ce0fa91bd0c56d3d526a90fcc0e47f4a13d202f1ac0ea0635b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GRUM72400464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773954757f8d2c4854d13850ac9f63582c4362bd8059b298606b0b6962118188. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GRUM72400474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa24c8e25d0e4b493a83502ae438373a151e6254c52bddc8234bcf65d816e410. 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/GRUM72400465.