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 0x1457d561d8cb81965cb116af6d099a012c2ad9e80ba80957f1e6944b39388891. 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/029d39db-28e5-4d16-a283-7c142ca3b805.json and https://artists.proofprofile.net/proofs/artist/029d39db-28e5-4d16-a283-7c142ca3b805.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 0x0535d5bbd3211dca08ac72f31d737fd38664096707a3ebcd8c1b5033510a26a1. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/FR10S1846624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8a89f80219edf7dee1538e20b9cd92973db56a3e11a88d9b4152b4b00273b7. 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/FR2X41773523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858e19a8db2ea50ebc6cd817abafe75804127138f97fc2bc01c72de3baddd50f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR2X41773524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f9aed822cb3e439e8b5995b1e8f01ff6b42e4297d5ee255d69a7f37cc0be59. 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/FR2X41773525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fac996a9f953f2e71eb3aa0e6bf7afedfbf8885192cf7c7f295b2bab924cf8. 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/FR2X41773526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb3a78ab66b66b2f8f43f6120622be10df6ec2ba6c97c435c60deeec0724fbb. 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/FRX201662344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011c43015c0c33f83502f37edc92f6598d0b9aec4b7b3bf3778bcec9a671fc26. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX201662345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8eb296d3c83e000813f2e0bcd5ed1d5a28d2e40513854e6a654a6f72a711e9. 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/FRX201662346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a284d27f3a15137b8ac8117fa8308192e5af943cd474d823a2e97b4535b1a. 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/FRX201662347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a4ab6d9b8818d51123a65003bc4e05860e78ba4d9ae5338926dc41b759eac9. 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/FR10S1808301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d81abe3a3f10b64f3be31de1fc4eb6ada86f91943b10ef781ff2fe48ce92a0. 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/FR10S1808302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059745672c06243c89c96e459de2a360442b2f4fda5da850181d4c5dabd5cda0. 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/FR10S1808303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa758dd84dbff48beb45c6c2fc93f70049cca77f43a481ab3f0896299990a767b. 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/FR96X1601630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b1df45ccfb6633953ede39b0d264a14111bcd2f2adf98e1f9ba28450d22ed8. 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/FR96X1601631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceda732ae7adcc75ee6ac495575c5b8ec004c0379ce8b3ab7142e2adfe33c6d2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR96X1601632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b2b01c4dae4897cccaba075ccaec7361ff8508968f6109564b653ab85ae2ff. 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/FR96X1601633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6047d9fab61038e98d8bb8cdddf6a310e188910727a944e43e93efc75ab08f. 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/FR96X1601635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf28f31166938387ec9156184f366532393ae6e4eca488316fc40a163fd0f67. 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/FR96X1601636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1b3b165fb61a4db2ae59effce3eef08da1d3ba7290587b98f31f7cd0db85b8. 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/FR96X1601637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a8e7fa5dec9ea1ba7aa6eef246208fcee1b6cb911b14a4e10d9f41603a6743. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/FR96X1601638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c412cd461c85d4a78fbea4c39873af6fb744bdc24a23f8c0700ba4226fb038. 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/FR96X1601639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc99ae1dd6eb83816b72890f359995f1a123de6fd67eb317794f3827333ddfe. 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/FR96X1601640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c124bf87b7fb9b58c0be9c62e9458b75bcad4d22e149b4a08fc226d19dc07e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR96X1601641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39107f57b78d4ff34dafa8d188c4dee340f0befbd17919b1dd7d29b9e88975dd. 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/FR96X1601642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f691dd6cd7f6b0279c0261e00ce45f7739e224d4a093942552004c292f99f20. 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/FR96X1601643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c55c94399927a298cc8e08a0997a70189d8274258cefcf8412cefe2c245f2de. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR96X1601645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5d57d58ac60b36b07bc0abb3f2095170303f127685b45ddc88372d5fc92889. 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/FR96X1601646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0a036df20c0bf2af96cb7ef0fd579ba4cb49184882fbfb224353393ed5c49a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FR96X1601647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3302c52987f4e140c7501fe074feb5c49f4f6f6c2c90d05459441afee058bafe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR96X1601648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333487beb7b21c5870eda6d25c903558a74112802872e84c20496d7bd55aa642. 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/FR96X1601649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe68073cd9e712714b313e54fb7b872567252ee8aa81c83ce51b6e41762a0175. 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/FR96X1601651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05bc7316df60983be2cf4e553a4e77546656662bc7cad15080ac421eab6f35c. 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/FR96X1601652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61a64786d98312468248257305ae115606ff8bd05ada7431b096be3176ccfc3. 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/FR96X1601654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea8c290b8be1beaa251bc59f791d8b3aabfe7915ab86cc05033dca9fbcbae97. 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/FR96X1601655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb160b1d4a34bed6f375bfefa3ca6e5f01aab9cd843fd1cf3b6c38a57cd485b5d. 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/FR96X1601656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105949cde69bca1d60e0c6bf377f2babc0f94aff0c1605e8aeadd1e7b25f2447. 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/FR96X1601657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb31d30d704cc5da87f8179dddf482e0d2009f3ef3f67ff676322a2cd6ffcdc3. 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/FR96X1601658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa621e2ba2c11f37cfd4f6d97bc0abaae15f1db03ac825674a204d74c85ff596. 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/FR2X41846242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4736ebc58452d534dcde739f79802e8168bf31cc6f66401d97450728b7ad024f. 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/FR59R1883439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7b0486d68cee708ca27eac6b3493924bb47d7c0c93c44676af31cc367edf5a. 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/FRX201860051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293ba7b8900f269189b286498647f9e9d986e942d8d87332ff69e772980cce84. 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/FR2X41712035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2186a0e64e2458a27b0361f23f67b007b577ab45717ffe926766903e8da9991. 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/FR2X41712042.