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 0x15dd4c2e183f88b212cf77d3277145e0819319f6016c9919f58cf5d3fd18f1ad. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4eb2b9c-0e23-4392-8296-c5c8ec6662b4.json and https://artists.proofprofile.net/proofs/artist/d4eb2b9c-0e23-4392-8296-c5c8ec6662b4.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 0x831b8e5139b9b154cc1027cfddc2a7ad6015a7c763c17286271de38f60eb9cd8. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/FR96X2010168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce2d8ef47e476832aa87205a6ec528e30e9bf6714f3175811e8815e04938860. 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/ZAAA52012010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75dae3afee5f98628699ff3961bb78fd78184787bbfa12615b368fe20d7a6d4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZAAA52012011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03203ab96174def598197827efdadb267c8ff8860fbb1e315dd05fe80f6022df. 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/ZAAA52012012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8f4c7a2e2c446b38f61f5371f11af981040215002167c1b44e426927531e22. 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/FR59R2209673.
Don't Walk Away - 8nine Muzique 2.0 Deep Touch Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b45b00634c577b2bcb87dde3396c33734c0fd1ec7a6df06ba633a8e39dc44c4. 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/FRX872232157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf88b4f09f91d0016b61b7319c8f70a2412ae4d333bee93a433886c11ed52570. 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/ZAM142400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6488607f12e09fd0fd356c983327f4e6e27a69d9eaa302e9023fe8d442e61899. 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/ZAM142400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3333d23df1d28b0345fcb5fa482a98d8ebf05af09a428ae75ccebc6466071c8. 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/ZAM142400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5a1dff922a2c353e09feade9bb71531e9a119df0e5dd9b84784951691426ba. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CAGOO2591660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6de5e1efd93ddb9e7e4379f9534939468db167fb255c52930d648a578cc440e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAGOO2591663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62834518b8b3f3ca8654aabdfb435ed9d71691bccd99c551a781e4757bf7d18. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CAGOO2591665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68552a1445aa0c9ba3f971e8c955cd512ff2644fa7337b55f099ef5f80fa04a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CAGOO2591668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2079b11df31119c466a7c05888a1a15bd02655bc9a6797b8c7140d7f3afd20. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/CAGOO2591671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a18f36b2085a6245466172acd6154715751a44c728a1f4f3ff491b78e969c9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:31Z), 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/CAGOO2591673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc46346733e9ed18d8b16e80e8cffb3ea0d11bd2ffc0057a87afe65f72bd958. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/CAGOO2591675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6837f9854ba9d77b5d4a7f4305115fb92213e03190cb996065358e02751a72. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:30Z), 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/CAGOO2591676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beef54c5664374882e8d92a98556557b70ed9533154753b2746a083a2467088. 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/ZAY591503694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf585a702247a414b419f4cb8732b8e7bf16e1dd73a108d7f953eeceb4f5490b8. 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/ZAY591503693.