Demarre is a surname of Norman and French origin. Notable people with the name include: DeMarre Carroll (born 1986), American basketball player Demarre McGill (born 1975), American classical musician
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7921aa4368006bde20c8ca2a97d132347c33b51af45ea9ea465f087da5546164. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e733b37-5761-497c-bfe8-bd51a5f1f3cd.json and https://artists.proofprofile.net/proofs/artist/7e733b37-5761-497c-bfe8-bd51a5f1f3cd.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc27fb6c23341185469b42129e431cb2548eb30e6c81771670c341ceffc3dbe0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92091848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6316cbe6ed6eda2a5a6a84f278703c03a49f96fa8df1dedf1b572069d79313b8. 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/QM7282007220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ab49e7e32697b18e39b374f3a34fcbacae443e13ae5a8b1e8fc3d5205d2a62. 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/QMFME2003496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd271c2bdb8f45487c234559e58417b222fbca5bdb6af36fd8f0bf22070488b4. 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/NLUS32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6568cfdd817dfd2985f2fd2303eaef943ab1c8d6e2f9739cef740b999bd544cf. 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/NLUS31900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb5657d87a23adf304942c7a36c3ac0eb0d98ae449ab0bddbfe8b02132925d1. 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/NLG662200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d1ab1aba20ac5fdb7149d30b92580e9dcb75e20eb8ca36eef2525e63b01323. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e5c4c088e6e73273b286f4ed1e56013392e522f2d1ffef85e845aebe4e4276. 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/NLG662200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bd2f4566c767265dbb8dbaf8d7e42b848b1763597aed9a97886a46b6f1431b. 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/NLG662200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9935b390c83324cc36d45f51c94b5eb7ed5807e47ef0ceb8bb7ee9eb30de371. 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/NLG662200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb4011e48d3ee0995318f9ec2f41a7de690149a98c0145e36bfd660b2622cc6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8670d25da4bab952aa65861ecc1bfbbb03a2965a1feb9328ad086fc35c464. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa30a2c7dbdb96dd59319bca24dacd4ae197044e10d614a3f83c41a4b2b6a21. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6ca8f2236545e71c6ebe2c927319b0644e1bc8794f01e7e76d8cb3f5bf8bc3. 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/NLG662200264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d676fec3846db922a6ab4e055c1a382268a0c3d06ca00a91deee6a11479f228. 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/NLG662200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29937e4ec83decd4813efc26370167d93f5f131ae3aceb0aa8f67597e735db45. 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/NLG662200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7943e220008484a316f684b43a11049e126456f5fee68a7683150b575d269adb. 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/NLG662200263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d22be9dacce904099280ea8c52837971c7f95926fbc4e5000fd1416736199b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68d162c3884a5c296dbe4afa0cdf48d42358e616e9321a7ee540711c47bfdd0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662200265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da98837d765890542efb21bc58ba68dd556fc40537d4534847cd36afd51aa84. 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/NLG662200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce4500d9aafc9dd3f14d8c847296dafd2665009bb59e658b1a5a022135fd8b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667d8e1eaecc33d9f5c3812bc3b86e0ecc4e8481d84f5f5461deaba2bef189ca. 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/NLG662200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1370733832b512272bb750434fffa7606802369e315c2dec8eacadfe1d741926. 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/NLG662200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57782eba8969e67692a8ec9533843c7dde1467d36f487d4aba2b0160325c2867. 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/NLG662200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7137cf84917f7ea7070178fb295d0dcba310c501870c9c4b3eff559a19041d. 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/NLG662200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225b889e76b91d43bf18aeb49ccbce9b5b67da508d15fe9089fca1b95681d4d2. 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/NLG662200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40037413e10f8b09d435bc1b9f6f011bc85b00b7aacf832298bf8f7f39acb6a. 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/TCAGX2366232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d53567b6150e8cce3adb0deff6a7c0a0494cd3372f8ec38937bee00c3d00f1. 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/TCAGH2261126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6ac7fc8267e400b109b9708988630f5995505e834bc8537d82215d393e4965. 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/TCAGY2300815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe736a447c54067e4ba38ae156df5232654207ec2f6f3631ea91e4f5d7a12011f. 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/TCAGQ2206915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa5dc7eaa61f7830c1fc7cbdc6d2a1fa23ee44a24a4881dd455ecb762f63bbb. 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/TCAGY2300872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3865919d57e33af79e2fc3ae993bed8c627451e33b4afa34e7a7adab1c93c5a8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGK2206937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b0566f791553cf945ff91d79c43b5bae4cf7baa7437b5a56ace4ad6029caf2. 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/TCAGY2301014.