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 0x1f21658bcb3bbe4bada043c1a43e269470255b4206c8ef252ac946dcf01bcec9. 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/5186b88f-9963-4432-a4e2-c6af4e2f1cd8.json and https://artists.proofprofile.net/proofs/artist/5186b88f-9963-4432-a4e2-c6af4e2f1cd8.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 0x37e3a64f86ade941c0d774735771201480bd4772036b00e33545f6b3d63ccdf6. 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/DELJ82016337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81942dae59ad20406679482d246c2babf105b16c7966d49b5161768a96542b4c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEZC62110457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48b75ee735324963933894aa686f80b33b0da108fe850bb0ea40201164dad58. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEZC62126730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e20100733a6a1f0a426531c41e3f4dab8be2a4dca52622cdf43ec790fba1c07. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QM3DF2160935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa475ec5eeff49adc9aaae3bfbb9ec96e9ecc57b7061ed2016fe8601ee1b994c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US3DF2201696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c27fff5a705b0c47c3c8055134780acb7cda2f7961e1da4b8cb4c35bdecc39. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/US3DF2232875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd562a0a6179e61c07457c3356aa887d6e3bb5479588bfa06a2d4a69239e849f2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEZC62203067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9524d942a1cadbd75608ddf61b09c26c5409c53ce9cd8fd840eec06eac84a2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:01Z), 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/DEZC62295070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476bf436464a4f03d3a33e9a1241d4e818f635521e63f4e9534c1dc48a3781f1. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEZC62328498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393a0a64caaf2a5aa3c7662da46654df38cf194b84f28c04f26028cff27944ab. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEQ022375507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9e6772610d5a40a307e0fe00ca25d225a013c65284150153bb0c82030659b3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USANG2445420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89cfd34f1cfec2da63d0949c5ebee25db3c4afae5deab247d6a9b77f8721b2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM3DF2415004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20f7f6c8106a453e9168aa6f7681b4909674aeb901b7f982376470ad7e7c05a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF2457924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44835aa43f1b03f62cf1a86c53deb1155c70e338f8ba015ca47500e744d603e5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:16:38Z), 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/USANG2427029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a734bcfff3cdea9c3cb7a55465c84d92cecccf8550ba4550341b4177e2c6a05. 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/QM3DF2407848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4eb1576e8bcabd195ba8a67bf8c3ae4110a44f0ce06d8293a7541faa308c7b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR10S2586110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7feb522f101972f0169f9e6d54c51cbdc0a06ca6c62fe1658fcdaccb28b50770. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DEZC62506020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d63f49de189854c2cc0f3fab6965ddc67f8a16cf310e56e94e04d732170fda6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:43Z), 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/DEZC62519225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1c2bb7f82d3267ae29bbc28c544dc953169d849d56deab90cbce93df248186. 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/DEZC62363738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51503d7e68e0ed9e4807923ce6dbb28c443a08777c8a696fe70c5a29fd8296be. 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/DESY21400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e42c19139ba8ad54d837a5970b12c7d95dafd551bbe6924f9020cb4d3240fd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DELJ81929316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0acd59f1c0697773c2de95802e404e9910e71039d0f6040739c1fb4a3aab76e. 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/USANG2216563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685536ee69c9c70a9c63f13dab2f528de326035059058de40852744fe764ba3a. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:32:10Z), 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/DEQ022384403.