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 0x086603d0ef4707368af3c547b57431dd463b5232c96fd879f00e7eb1f21b14cb. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a68b77a5-d972-4250-9ef1-54f8553570b3.json and https://artists.proofprofile.net/proofs/artist/a68b77a5-d972-4250-9ef1-54f8553570b3.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 0x75768cd67208b05e2f2ccb87693e42a5a337b14a37a28c4b920e7bccdf2cbbd4. 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/CH6542266713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b1f415bcfa09fd90deae7106e3ae34bbd453858e37a430d59a59f3734b6b70. 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/USCGJ1739882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c1b900d4271c2313eea7e1e801bf47bdc0c70b746122534b58d0cee69d14ac. 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/CH6542315544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d0951b327124d2a3d806876b15527301f9db1ce9e47271f277eac696d76c21. 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/CH6542315540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81217e158eec594aa6c4807e181b5414f32b8fcd5a4f321c33692d3271fc247. 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/CH6542315547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6433f74c9e401be58369ea81ecec7b1f354760d63ecfaf406ae4618da46e64a9. 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/CH6542315552.
Pirates: Le destin d'Evan Kingsley (Bande originale du spectacle des frerès Safa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4321dd7ff5d877cc2e931a27cc3bfcf3164601df955fbc0173112d004b0a4598. 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/FR9W12028272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b21f507eeeeea87a0e32e6491dfa47634f4caa8bfa2a6e33727776d1fb4710. 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/CH6542463040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195643eac1f7bfd0c4077d5fcfdccbcdb54ee47d911fdb62befe52e0847fc9da. 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/CH6542463033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32676806d32b779aeea096538c1ed029091b4a7e0c9a68b82ed333e7403a44bf. 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/CH6542463031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2e252ba492ef802c9d962eccd0bb4d0bd53a6db28a33c8e11b902c5c3e4e97. 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/CH6542463034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17d1fd250008da7995bcfa8942c433d0af9399fb6cd965b7a9d0fca8d1c7dfd. 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/CH6542463037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198e92dc40916b9abb654131530aaef79e1668f4826755806c6ce9531b0a408b. 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/CH6542463032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d2ff1f0d7ab4d5cbe5d14687808d0a65878d8c855d89283baa45d6d1002921. 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/CH6542463035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9b4e730f725d5b50482b2eacc452c5b2c325b6ef47da371b765a5ccc1b7c83. 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/CH6542463042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8ae55551fc32a105da02dd9c0854abfea0be1ea35e553551599ed0db887e13. 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/CH6542463038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6a2c3112ad3ae56e9d40463176d868ef91eec55c6b42622c6c56c1a0471ecb. 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/CH6542463041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760c11a52aa2661161856e34de1c6ee0711bd35e5edb00ffe6c4e130838e054f. 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/CH6542463036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a42fc495d000a563b402c7bd2c1ff271fa7bc5fa0a0d51c6b0ae8bbc6129d40. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH6542463043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc0c8ceb2ff9546e55a35647019852f52df79e5bead8887304ffb4f37483f8a. 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/CH6542463044.