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 0x83d5e8bc581356d6066fd5e3f9a775ca4ee3e66d6688eb6e803487d45c0595b6. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77c5cf0b-8b2a-4003-91d2-586899e186dd.json and https://artists.proofprofile.net/proofs/artist/77c5cf0b-8b2a-4003-91d2-586899e186dd.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 0x48a8e1794428250ef0080a119b372ffbd9c6becdd2c4c5e064c25f74cdb992fe. 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/EGA019001107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32be186c2f6074a6db00cbc6909ff2a77e473f76f8f08059cac1284eb7a05ae6. 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/EGA019001112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a8c290edbeb133898d914aa0aad9cc2fd060dfc27ca24ebc2deccda7ffae3d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/EGA019001108.
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 0x193f16995c9b3aebd1913e0e08464d46866bcbbd0c44a849ac60369916974427. 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/EGA019001109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d2de1d8a74954882efaba943a5ca8a14e0e5697520cc6b6ee17c9bea48d892. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/EGA019001113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f06c18787e3474098187f8b268365dd9bcbbf91ede722794c9e9e599291ebf. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/EGA019001114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea9124e402bc0c69178446dfbbf1c4fed0784ff3b3851c142eb8496eaaa40ff. 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/EG1010100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b411d41bb9afda431a33055fd5fd2c6034adf400de4e6010a3d559eb6e48b56. 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/EG1010100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a5974ad2fd7b9846b9ae70dd0abf04d555d770f8f125df67231d3e55a5670d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/EG1010100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d456539e009c7628f502ee0a1dfde5a2ab4e3811c18bec13a09c90f5b8b1f0. 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/EGA1K2301416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72345e06abd4eafa7844d554eccfb08cc1e3b6c7faebad5f804b0819016d221d. 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/EGA010545151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9e05fd9edbedaefab3315442c05b4113091cba0340702b6305016a974b6681. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/EGA019001158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f004f2f35a4e906a47c04fc2b63a3dfb42cbd32e33950af5b8987f60d2e14f5. 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/EGA019000697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d56faba92b9ffb57d4c42b2c94fcb83454ca2795616537756f0f7b6ea0a7ac. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/EGA019001151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bfb63c4b420f9728374f077c608bb855e2e083f15161f4a15bc25515a6c54a. 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/EGA020502063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a9d5e8ceebaf33a14cf7ef6bb07b7f74b63a2dec19eaadb09d92bba0581682. 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/EGA019000673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4ec31c3947d221164e89adce607d2c1324d22e20aaf887926adb6db3e5b8c0. 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/FR6V82251189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96f36eccd66b913ece0c6fb8b96d26421f139f2fc68f0090108eb131cd6562d. 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/FR6V82251196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9460e5c8cbcf6bb235c1b538bae50191e79d04464743f14cf12fc1a8c7c597c8. 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/USA561473623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6720443ec767b2cfa0b1b9e930f1cbf7e43e19f468d409394700408bb62ef0cc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA561473626.
Read My Lips (John Wojtech x Delighters x Shaza Remix)