1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x287e3c930e1f5b28aad76496f8c389f85d63bf5e05394421bbcae765588e7862. 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/e1b5fafd-e4dd-475d-98f5-10e8d4a684a0.json and https://artists.proofprofile.net/proofs/artist/e1b5fafd-e4dd-475d-98f5-10e8d4a684a0.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 → block OTSBitcoinBlock must exist at that height 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 0xf62de9becbc4f5bc92e217cd2a4406659ad6bb55bcfc2939194973f1a6fc2d6b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKXN22460113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d66220c018e9207e2e6f505526944f4de88ace4de65ea19f3d1f8377b4119b2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKXN22460093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e44d7aa51f04296034f54ae1a04b74ca18af2d2fa31bdd4b4d46d5bccb313c7. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/UKXN22477670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613df5c2ae03ab1106a5028e644d4e62d698457f0d7515b8791a2f447b924626. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKXN22477685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b630eee7367f1692fce825a74e093470cdbc738542bde4b6d22b20dc5f2460. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UKXN22477678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bd94c70f6d3af41f87f90ba7e5f98df7086bb91b379fcb60d8f3d6c20098c7. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GX53U2377700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e46cf3996098fc90422f3ecc6fd5a6dab4792096e3c4d528bcb3a6e7723f6c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GX53U2377704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72826e12f7913fc5502f45b053f5553492e7f873a6bf83b5e55604738cc87b1. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX53U2440303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ff992dbcf712b3a947183740517d91ed1f002881eb5d55b3dee501620c01fb. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX53U2440309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a24c87ff874eb66a96b2a023cddbc71109f7a30dd38d97c8e6679e28c408e14. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX53U2440310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bc3914e4f033933a51997a9729024438adaa87e2646288054ffdd49e0f2514. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GXF9Q2404699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca34ca0e2af68c949a7d821176e3063ea6d339f0eea530f618b9477b65f64738. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GXF9Q2404707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dc5b0695d5d76a856f35c6674f3f5183cfc854581e21f3341ba544d8a3b9f2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXF9Q2404701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762940325fa21f7a465608fbbf2b08cc72b5af5a3255c40b8c2e8a2aa997a73c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:08:32Z), 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/GXF9Q2404705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a4356fa63c098985b0413ff594263968101d5d9553d59e0573658d1838aa08. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GXF9Q2404709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c869421f295d1fb81538c67542b7dd370ae64ae5f07217b1269357286a159e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXF9Q2487246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f2abd7a5cd73530964bbb4a739a1709eb12a2a3862ac12094b1b8dcc42e274. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXF9Q2487244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243ab6854163d7893bb327e2c21249986cd9ec8b74ad908e894f12d1618c1817. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GXF9Q2487243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa071fd3373aadb53c37d7b4a2365208dbb681258a87407506fcb54e07b4e31b3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UKXN22501420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9908e4b0bbf24ce621018722349b55d41cb23a52ab2bae44b0534aeb7ca90e62. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/UKXN22501425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de648339d16845b2330daf7184adc1b127b2d50468bbd13ec1de8f11e38cdd9. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/UKXN22501427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386de602eff6a25d57e1847670fd87c72da88072fcc10840dc41a4c3234c2b92. 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/GX53U2572697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb49f5edc9bcca1b63f5cd7746817b70325999650d92157671e48f6e5930fee. 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/GX53U2572707.