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 0xd345834ef77cf1de59f9ac6f62a37c83c88bd833833b4e88518be2928d9cc1e2. 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/ec7b3f26-d7ae-4971-8b99-315b00984314.json and https://artists.proofprofile.net/proofs/artist/ec7b3f26-d7ae-4971-8b99-315b00984314.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 0x480dc042b54352989a1a3cc0316ca796dc2499d67abf52120a412e76d96b8e4a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUA1D2451321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52df94a3a1154d5812f004ea6c3f868716052342a8d856589a6d41442f7c063d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUA1D2451323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09795fcddda901b59a9c94862dd63dcb32482487f79062d2d03fa2f0a75cb09. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/RUA1D2460715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb702a819c34eddde09f16c83372529d7655eca7115f031aa82eaa4231b0082e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUAGT2410766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd54fdad44a8a2da26d819d7dc457fdc572e4d8dc107068d2cb99dc86dbc262. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:40:53Z), 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/RUAGT2410768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ca32071ecdbb950b82cb148c55972c354ed374b4270c0ce758b2e947b53741. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/RUAGT2410769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f791debf551a00ca3557c990ec7cc5be121f8bb1b8f8aebe1464a6c38703169. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/RUAGT2410770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5bf7d134c7a6a182cc2f3f8b8e6eeb2b2e157f0bd4883eb40d7c201f39dc03. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/RUAGT2418416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fa0f81fcb95f53f22f2058db3d4cd965448462c96e725a816112fcc4d2b7a0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUAGT2427631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd309f5126eec79415f0c5791e74878de113daca9df7765b2f064160960598479. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUAGT2427632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c06851cdde75b908569ebce67b62924c76ed79f15e471e6c9fd63d5d435828. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUAGT2427633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c0c740dd9cec722dfe6096cf00d1af73063ed2c34a3937c70674c698d480fd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:10:21Z), 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/RUAGT2427635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce5be097f68d4cc6292bc39261e3b3d41af412ca53af4f4be422fd00376a0ac. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:45:48Z), 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/RUAGT2459476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda15f563f42ecb8d50c17cc4781c392d79463d815dcb2614750fc47c8a26ea53. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/RUAGT2480661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543047da000107730b86a118abe29cfd68b9755ee95d90c8df4542864b4e1dac. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RUAGT2480664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a434cf46c862bfb956622c7cb0dac322213da6b20cb6b67596ada202ddbb118. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:19:40Z), 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/RUAGT2480666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41a2250ebc671aaceeaab05a48b6ccacd785f7582890a0403a720662bb60ab7. 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/RUAGT2480667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41653356d26d183545305bde12fc7e4e94eeacf78a3b1e4bac8b5364afe5e040. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2508482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b44cb632d4e1f0abb87d080214746cba075b95ba874f2c5f567f7b05f376b97. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUA1D2508484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2ce0d5d35f4b6d281388bb2a94e149245444a15ea793a84a4502f9fa84447b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2508485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4ce0438f2e82f37ba4fc8734007d0c6d3dceeeed65023c542c8145577a0450. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D2508486.