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 0x39df7a8fd37f8ffc75b66d8ff1410433e9a8329ed81690a8549d3b863bd7698f. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65550c36-de99-42c2-829f-f510630915ec.json and https://artists.proofprofile.net/proofs/artist/65550c36-de99-42c2-829f-f510630915ec.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 0xd714e3c0690dea6d20079396b26baba0f9b6ffe1e62491b5fde490df1e44c5b3. 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/DEHY11200688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2692d5ef6d5f08e1918a507f6be5e6bbf63b84b915f1b4877f8c9bde5d0ff2. 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/DEHY11200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f57c63d1cf610ab746bc1618a41c747b7a85baf3adf7dfaad6403123e44cb5c. 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/DEHY11200712.
Trompete & Orgel (Festlich - Besinnlich)
Suite in D Major: Prelude - 'duke of Gloster's March'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1913ba097e515a08d8a646313390c0c305b46c25bd24f2c3ee5b0404b95dec4. 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/DEHY11200652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e35f92b2637d2653bbc7f3b1e426c6416e8e5c4adcdd47fe4b0ebff2164f13d. 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/DEHY11200653.
Suite in D Major: Rondeau - 'prince of Denmark's March'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dfbb48936689f18c496c3f54abc8ef1c6eaae73fb80dcfc51c6122d23df21b. 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/DEHY11200655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1000a01363a6ff78d0037a915b6de96491d033360c3b41f4efe4cd1a6ba36cc7. 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/DEHY11200656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7d3250c7568da15a1f35fe51c40b138e76d01cc7840d6decb132ba14ee5763. 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/DEHY11200661.
Musique héroique ou XII marches: I. La Majesté
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadbfeacfa95cecebc67e5485264f7dea19883eda594caf8fd97c6fae10efaa9. 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/DEHY11200675.
Musique héroique ou XII marches: II. La Grâce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ed8486b0819a1287932bedf7c37dd0055a79d6b9e1cb0ffcb38f463b592c17. 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/DEHY11200676.
Musique héroique ou XII marches: XII. La Réjouissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272b582264be841c1399076b8e1800b206b695bede06235379434c307340a3fe. 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/DEHY11200686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069667b20ee6a4cb391bbffadf8cf7a50cf93acd4f01646cc4ff413b197cfc1c. 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/DEE219900418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e92a84f87655d3725794a8f9ee570f91d8dc1021a6874a1900e1eda8952dd7. 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/DEE219900419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6c64b7e83a481da08bf12355b4bdce834896fcfb32e8c6c7d2992d420e0dd1. 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/DEE219900425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7642b26960d1327f3dd6ad3b2297daee962b2a4667a8422a461d0322b48eb6. 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/DEHY11200549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bfcd353833e3f5d7ef4ad0262ea7d64d563cc27dc67e286fe93ba61f98d415. 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/DEHY11200550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5a65d970d100ef780dcfc65457356361842256ffb890bf38300b5365d7d530. 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/DEHY11200551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb876931b206d738bedbbe649ce0439529c938b23a4f42f6d3b7f0ef8ed98d1a9. 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/DEHY12001932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e27c5930f99cdff0b1a98e05df4a103f0316d2d9ea6ff9d3bfe9930f04416e. 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/DEHY11200569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c8172c45adbd15d4411c372dce5cf670cea21813b7480339be93571197c08c. 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/DEHY11200571.
Rondeau virtuoso - 'prince of Denmark's March'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a31d3c928892a33b139215143cf1c138cc54afe396aa7b142ea5e807baed3a. 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/DEHY11200614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b5d88d2877ba9e480098a83f42f1fc57d4b67a2064cc6fc0ae2af9eafd19a5. 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/DEHY11200577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f57c63d1cf610ab746bc1618a41c747b7a85baf3adf7dfaad6403123e44cb5c. 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/DEHY11200712.