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 0x6258ebd2fc186c6ec3ff9bf2d7b67316fce3b54e686e2f5265a6afc2c39ff803. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0db26f07-92de-4f42-8876-bb9896287875.json and https://artists.proofprofile.net/proofs/artist/0db26f07-92de-4f42-8876-bb9896287875.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 0xe28fe57e1d26ac498bfd06755d5c41b0e6c0de85af992b6d29acda980949ff28. 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/TCJPA2476681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c0115d1eef1e48f819035136c7cd2de6805a61479d1c443be8d8481cf1fb24. 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/TCJPX2384504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873aa97757610e109c5720491e47c3410f82b7fa5d7246540394d84a1696b421. 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/QZTAS2346735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e70d70abc6de20751d6a95ec192dcac3757c7f0031fcdd5ea1da47cf5cbfd0. 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/QZTAS2346737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e774f30b1adbec7eb248ff651dc792f77916b6dd0b5c536096f46e1f0a2bed. 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/QZTAS2346738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1683dd9cd71f85248af3adb305aa092b3bf44e0f9af6d0606fdbe53948e9fe2f. 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/GBEWA2303264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53680985337b1530e657b428a9f9a957a5ae88905adf06a91ebd2d14dccd9cf5. 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/JPR502301702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2118b13ae207c27592341776d2df49693785070360692a778c9249e902956524. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPR502301703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b48ec8b18bbfead812913076fe2de76a1311013e3781f401e0d620437a8bd8. 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/JPS801962215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b3b4b7d5f9b8a7d9fdbd0f8a8b9d2b2cffb29c9520d5e21003d69e39c012ae. 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/JPS801960348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4f425dde7ef8705b4b46c34aaa38f787ac3d7b1e23b323a644b169f6765b1f. 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/CA5KR2262985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421507b35b3d663a0b5ab1bf1ea34c2aaed4ab7b5be7be7404f77559b74f875b. 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/CA5KR2262986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62813fbd91d4817df2d2d1382a2def6e257b66fda495ddba57d8950aa6f14b5. 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/CA5KR2262926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2df7992e2a05b31d1c17c4fa9f776815f43b3e107da5875c3f927ffc036ec76. 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/DK9H52200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dd0ca322ff4a711d04a39000032496f2c95781fb3988cf69076720a4a79600. 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/CA5KR0033145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bda31c1106f73af822b97829d9673566cd99ab3fe3c46bb68043b6ae8fde012. 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/CA5KR2145173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad62094032db9c194ca2606a37d521438dc923befa24044bccb8202ac211b55d. 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/CA5KR2115977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c104eb851a8e9476e5b7e25ec46e3e2a9d6936d6dc6cfd0d04c83f83ad9545e. 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/CA5KR2115979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df6d642ad964b6e300e0d1b704b973cfc23cad151f0bcca68381203f2e42c9f. 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/CA5KR2115976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222799374663fc719218946ae424d7f36dec6bf1e1c6d96cab31010cc5df184a. 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/CA5KR2115975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1617c70414a44f3114ca491e6a80021aaa234a4f7d9ebc779575214be57e6c. 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/CA5KR2115978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf814bc351aa2017611a75bec3a6907e56061f1be66ffbb1fad678e5cdc52d81. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CA5KR2115980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddde23ff14b505d0f70ef73f58741bf26257364e2b9acb7356469dd9075cceff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2115974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c19c0551006eaaf6d4f154f117fbe48d62f886731edfac1b888c4f9c5db5dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2104874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c19c0551006eaaf6d4f154f117fbe48d62f886731edfac1b888c4f9c5db5dd. 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/CA5KR2104874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeca5ce1159466f30d9caf193fe6244265352f224bd9a6d6bc83b976ca628fdf. 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/CA5KR2205923.