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 0x50d0b0201689d536a0514ad475e1ac8a999b44686ef5e1b7ab33286e019b6c7c. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12354925-7f1d-43da-8bf8-c33a5f9b4681.json and https://artists.proofprofile.net/proofs/artist/12354925-7f1d-43da-8bf8-c33a5f9b4681.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Goldorak XperienZ (Live au Grand Rex - Paris)
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 0x631f3718326bea5c0f188d26ec35c05879aa90155753ab411d29898d1f75f6b5. 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/FR4LW2200490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d662a59294be011eec6e70b8737f0f2b68f3296b670904fb52bdc0c639d333a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR4LW2200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c602a90b5aa50bb731c4ea6e82165164e98ae2e62b9d9c94ebceb73eda891c. 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/FR4LW2200440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc861608bd95e9f5000593d4444fb7daf68f77fb186070cc90b93306e1355178. 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/FR4LW2200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec68aac1f5fa407d3ee2bdaf165c60f133452887086375c0517b8c0f09bf99a. 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/FR4LW2200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6b4ddd6f7a69c82c68b039393c38a65b1bf99f3694bf0eb202c31a84a2e37. 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/FR4LW2200390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cfbc889d269070bdeec0d275a820dd0f2b398b622503e4003696e807bb3ff9. 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/FR4LW2200420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5fb0f25f940d90c576ef82f6d7d3571d68424219d90bca68d0c8fec6a23043. 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/FR4LW2200500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bc24813fa6e69bdf50b0dfa4355bcf23dcfcb86e0ed78242b556f0dbf24f2a. 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/FR4LW2200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2198f47d04f38ead857b64069f2631dc462d6ebeff90abb86a115af79d3b9de2. 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/FR4LW2200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ada7ea6c853140b53933db3f11989e5a8045b918419b799ab9a50e7ad2e2f1. 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/FR4LW2200340.
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 0xfb5588945a494a04a3f0676fe39019867ba439250954ea37f98830889078896c. 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/FR4LW2200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e4d7cb20b71721681d6fff3bdb832eb096e23e8fbd594b1489567e05daebc8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR4LW2200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cdef284a36d7429e9e86c1cd1dfe397a16841f78d63b202d761c5c6deef692. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR4LW2200450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f52bd7096a82d3167d9f2bff52a49d2865624ff49d6675d4a61833ddf2d02. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FR4LW2200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca77274c53f038fb641c801f63aff7f7c4dc2640382b8e30de9feff04a884197. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR4LW2200510.