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 0xc9367e894f212cc895963307ea20a059284a108921b2b890531c3af32fba0adc. 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/a28ef620-820b-46f3-8f63-b28319aaf451.json and https://artists.proofprofile.net/proofs/artist/a28ef620-820b-46f3-8f63-b28319aaf451.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 0xfb79b195f3123ba3e46d037323a5685fb9829a6b6248f0d07261a9f770ba8fc1. 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/CACWV2098640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d723972daedbaf9b0b6db012bc01675753434912fb01638c29fab820a62aac. 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/CACWV2092761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227bd17f3aff241f3acafa4282191449da3b2faf3246f02a43640f9328701ce7. 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/CAENV2003650.
Sitting On The Grass (In Mushroom Kingdom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96c46fd8b10ad3614311559bb1e611b5a7a6566607d7304f6a691acb9f72346. 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/CACWV2098643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86d200aadf7eb94fd9a620a7732c0332ca74818ac494d650099288263d15b26. 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/CACWV2098660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516c2a223b85b014bd1dbd8108db47bfdc01a8961bd8f90409f961edb2abea79. 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/CAENV2000424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64349f040b9763e2ae8f23efc1240d157ca9c926b68ba04140a653e764d8422c. 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/CACWV2092766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871eac54a5f0d9d28d31fa05ff8173d1dd0c9a424cbdbe8c60e4f9f3039f004a. 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/CAENV2028487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370c4631d0df611097ff11fd729bb41fdf78ee2d070e8b177f21b75501feca2d. 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/CAENV2000420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5021f8f19a5f6485c9aaa8dc500f2888dec6bd51d8e6f1ccf25ad62f5371d7a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAENV2016437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4578cc8062a8affce5810d18d87ae8662c549e6fac13bedfe93dcfbbedd38cbb. 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/DEVY92300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa665b7e56d68a90aabbd86d913bd9d9c3c26cc93b5f1d6b492fd25382614b09. 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/DEVY92300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0c3a9af8126ab2b1e926a41d1347adc806d85ad3a0718bf6eab2ff6fb9eec7. 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/DEVY92300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee15022eb798543751f88a0eecfc1bfcb368e63f7ba0cb6c6c5faabe85a7c98. 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/DEVY92300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4578cc8062a8affce5810d18d87ae8662c549e6fac13bedfe93dcfbbedd38cbb. 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/DEVY92300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4623aadd1488d600bebe048aad68abf2cc35099334e21681bfed62d9bd4585a. 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/CAHQJ2271536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839bf8c9bf2fac6596189f3442edefaead905073120cf57a1e69beeffc2dc176. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/CAHQJ2271521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a6a1e777fc7c27685364a609ea9e918df5380f6b4f37c9632a218af78d5202. 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/CALVP2081714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6840025cfe7dee0ffe7b834455742c01fde9b8b5da43ed76a4bf10b1cc74e774. 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/CAGOO1918761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87935d438ad5bd64a5ea32e07e135700b817d50e34b874b8b0020c350a2c1a6. 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/CAGOO1918745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b017f51ed35eb7e697cd727a27c44a6ae8e2e116895300c7ea876320034f7e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAENV1961785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101d3d3daa52ef845eeb4fa110fddec8062ac5009176e39e30ebf694e0fece5f. 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/CAENV1961786.