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 0xd62d3192c6ed7456f94fe74d00af0f6f75cee6130b5665b9126f34498e9e04b2. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b82a57a3-4b46-43ba-88e7-53f5c25676c8.json and https://artists.proofprofile.net/proofs/artist/b82a57a3-4b46-43ba-88e7-53f5c25676c8.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 0xb40e91aeeba02051805145b415b900e4b49e2265d20a8d1f533edec9b3c9d933. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/HUA612202614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6726ea679c411ee384dacb48cc48b7702cee2f4163bd6ab7142362a33f00e9c. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/HUA612202432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb20ff86f4f9c4f851bb9ed79fafedf3af7a5dd0521b1163e956d18f6e7616fa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HUA612202167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abe6cd448c2687206b1a44150e70b15109064a434bb9a329f6bd291d71b49e3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HUA612202366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc491e962d88bfd3790f9c3fab659e590f7d0a627e0c70a6aa5393aaf9a887f. 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/HUA612202368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412081954ffa4992b18bddd96dc9a4c32ca7b956189b9ecdca9a6122cd97a28c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HUA612202165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d60ecbfec59048ff1d3a3965c70139e50666487120a5182eb6e38e654d7d475. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/HUA612202371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95cd104bd6951806e8d808ed563e1ce8aba408948247735f4cc491bae0e4e68. 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/HUA612202390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423f3a6497089901fc882ec18005696abe812b228ac72485f62eed915e20e014. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HUA612202370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778be363495ef837fede381d8ba1f3d3dca2fc5814106ad17bd259cf59be0b11. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/HUA612202406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f59ffcbec8372c530b1d1af82ad9f2c82a790deacac0da21c112fc784dcabe. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HUA612202367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8645a32d2117425c0dacc018bda909f603c7c2a8f666be865060b6206a8b8202. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/HUA612304457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2210fdf832ff17278a435653ef1fa5921b38e2de2d79638ab4ba7f9d4d8342e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HUA612302620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679be1a40307b0cf4670d307da3a1753a40065756bc5154685deb78c9ba1e910. 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/FRX872118154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c03ae604a26770d4b2a58599caaf26e4c4acb88e70c9a20469fb33067bb9e9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR2X41896900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7343e7ab754cfbabc0c1a7a53b77f0a30401f34f54f15c37621fa925042c266f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USLZJ1523535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87521d5d2863a5a0c24bcc9be08d000d3225e0669634ec9d7ac16486d1f284f0. 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/USLZJ1523536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a2b59ddf985837d4eb7a8580fcb432edeab0df410747bb71c476ec6ea42c0c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USLZJ1523678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f22b2bb75c96e25510367c109a30ac0e8a7a94bab4d8fbfc9455eecad20835e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USLZJ1523679.
The Untold and Beyond (feat. Dori Hegyi) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93908d46d325b10bfa8680923e73b738c05420fa13dc007532f257d01216e20c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USLZJ1523680.
Aurora (feat. Dori Hegyi) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212621a02e7020b282576404eb51e97dc148d457a86767553f9245b6403b9a80. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USLZJ1503285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83495ddf55f404eed9d93be7954196a27a5629d581b281586593095c58e5f9bb. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HUA611802841.