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 0x4e746d207966f17f391da61913f99674d98d45fc4b63bcb20575352906761977. 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/186f3feb-a8a1-4ba6-868a-2a854dd2bb7c.json and https://artists.proofprofile.net/proofs/artist/186f3feb-a8a1-4ba6-868a-2a854dd2bb7c.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 0xc1a21dd4d0909ba8e25563775afc152f1141237d16c102d3e1989331837863ef. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBSMU2695168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9d43ed54600785385c816b186af1b70f163c07d8ff8bfe3acff3754807f13f. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GBSMU2695301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc970da675bd294bffc0b7a209851f77907a0a158edf1a989cf4bc8cb75c1b71. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBSMU2695343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72080bf859f11677e466012bf9ed90620589562a24109a3af8d231738ec2a337. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBSMU2695345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59ad4303257c4d65574e0ac536e739960483065736263d757028c465d55c75a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBSMU2695347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f29c57bcbb4025f40a67e71d684758515eeca70807c6f1d60ba54d8a15fe68. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU2695356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4f854345e258385670af449f547800c950efbbc54ad4e6b33bf037a1c8b580. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU2695458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f215049faf54d3908f537e2f1e7159606488df8bb2fc06dd9dc0c5c0c259faf. 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/TRZ351900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4205bdb71633c59e3cb84acd6cecf0650429f1df2369f5e9aeac22c32f21db80. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZMZ92157461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf844840cb0461316eb99c1d4d69452c00e02fe0c90f9bf7ace0bb14e20a8b8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJW2257030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c819cf820472e7d01691e5c8b2aa06990367f046a5ea69680734e3d00ed7c3. 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/QZW9L2278763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1d4c66a0d2f60ef7ed1e663142529dcffde233490d8b037fd601992d5b7303. 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/QZW9L2278764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdc7e7f3b21dcb43bbf33df61837d73e69ac33b057f3a8276a5d8530b9af0cf. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZW9L2278765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a1ee479ed72f02ef787a5f3748b1f2e7c9cb0f492ea9d727db9ae3567c5b5a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZW9L2278767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73182fbd0bb19ec789a789d6574d4548fc54fe4754cee544fdaefbe60c044d2c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZW9L2278776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb458b1f224913dd399d7ca1af1c78ed3bcea777d868935acc4acb70888efb65. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZW9L2278777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4503f34d94332987605967027d6a14f61c22ee63dd0c4c482ddb0fdf7baa1655. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZW9L2278778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c69d527836e6ac5b5295ef6a12b15aede1dd48ca82d010f0a49dfeb469dd2e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZW9L2278779.
DERT100BİN - Stillin Double Art (MIXTAPE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8deffae238974783e279880a6c95eea74f0978673db43839c4a01a063f7cad. 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/TRA162000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407d98fe6d028fbe8dd95ba55ac8bedadcc29f0f3f88adf6832f4e649c29ebb2. 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/EEHU32000570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6334e98e068c5543e8d71d76e4bf465e09227a70bee19aa12463af2d32d71bbc. 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/EEHU32500110.