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 0xa31efa2784b9f17f23f8d94237977caf1d0e8b1a094ab56886a7b48f09fa321b. 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/8ed2e235-5d0f-46fb-85fa-cb44723d93f9.json and https://artists.proofprofile.net/proofs/artist/8ed2e235-5d0f-46fb-85fa-cb44723d93f9.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 0x869a000ab42db8185cf13c3da05e1690f87b8e362a5e65f50b48c71318b76e7e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:25Z), 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/QZZ7N2535324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07e4d0234f558d54dd5c54a199ee345c6dc21abf3f69f719c6be7f39cd4f45d. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZZ7N2535308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3497f6e53407f1cb26810b8d79b4483bf096919db0b33efa016400c0b736e34b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:24Z), 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/QZZ7N2530280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12e95ae8b218a3eccf186af83f785efd7c1e4afee2987a9770946ece57049b8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZZ7N2535369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8982c648d7757465f91288aa5304b1dd7609dd44b5b8bbcbc7f3a3347bdde5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:40:07Z), 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/QZZ7N2530293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409584086f24ab2a09717c3b022ba9091e306366089a7efee93b24f414e8b3e3. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:37Z), 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/QZZ7N2535375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c3f7d1c1ce37d94d23c2f78ec7b9272b828d713652a00958ba30adb91a5ae9. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:55:02Z), 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/QZZ7N2535379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87917d11202f897e565a2a02496edd9ab060dd3fe2fa8da6eb850308895e655d. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZZ7N2532761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935ffc3b77b15b0244ad12fc3547ff154c928b46a61217aad3c78b9db10f7523. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZZ7N2535372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b5dbbf699cbe448edd161727fbda86b2b000fcf11198d193097b59caf08ca6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZZ7N2535377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ada36b5f1f74ea6a250851c759c338e4d0b8af08e9b20a989bd880ef0c3bd1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:51Z), 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/QZZ7N2532784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277218cb98ef73440b67b611d570accaf15ce5558111a906088c12444617a61f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7N2530303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea5968bf7ffcdd6bfbaafb5d9b10e20fe3f2db1e3f52ff05934ecc25be6f856. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:47:42Z), 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/QZZ7N2535381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ba9adce00ff36adbefccb38860e8d58b932c760370ff7e83d83cd0c37c7aab. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:40:08Z), 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/QZZ7N2532759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8fdfc7dd45b776da5e361790033bfc144fbb09913e68f0dc7f74d1c26bff38. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:04:34Z), 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/QZZ7N2532736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8517f1a7ef37e9c66083541fa78ddddf86a926264e824788ecb727ee42011dd. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZZ7N2535367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a01e79b8e3060e4a1142f11c9c723a048c47bb0aee67e09d1660e296a5aa48. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZZ7N2532757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0b792c4e03ed5900ea4fd9e8ac6f6efdee40791ff17b5d52e645a8a1ce0e57. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZZ7N2530301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8df249ba8e390ffc94041cf88d2ff5ae98aab15652cda5505c4da4e15148d6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7N2532786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0bb2b00d9fa4bb1c8c564243c5f79d68e72d58cfeb72f3f98bb8fd3580d5d3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:02:52Z), 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/QZZ7N2535319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e2cf17582c845b8ddccb06557f273c17f61150e38f06f3e10f567c9aa50aa8. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:44:01Z), 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/QZZ7N2535317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239ce6ff50c55f4b4f414893074ba7d049bb2aadca73c59f30e3b591fd1f9c6f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZZ7N2535314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da1a94575f435ea0d879aa7148a9fec082f3b78ddc81acceda9f66b626b5611. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZZ7N2535359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d7b2e1b4f68c385a323a811212fbd441578225610e0ff4b2526d943da03717. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:44Z), 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/QZZ7N2535360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2266a60e34fb567d696ae096dafe4d4284036e1b21e5fb68ca0de47aa9c1a354. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7N2535361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d280d0b84275599f8a8deb2c9ce691f19bce2f37285d92d43a64401930bfa6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7N2535362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc838d242edc00b57a93a30e6dca6735a60c3c604a7cc00be17a3f7d85ba6eab9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ7N2535363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc130c909ee6bb5c8ea8c6afd1ca5a933ff24cbe9281c870ee3d6de15e39d1c. 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/QZZ7N2535364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e9fbbdcc31cbedf38d015629fac6d41c2904b665392c2edd58036bd20cb30f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:34:44Z), 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/QZZ7N2535365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df5173e0c5b5c99cb8d546e3161e8570a1eacdd24e1459ae5305b78b4b14459. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:02:28Z), 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/QZZ7N2535366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1dc1d406495f40504ca586b6cb0a55119736841f31640dfe8fa4a1594be17d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZZ7N2535328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2413cd77b7c32584cda88bcbc05b44823a0924f6c4eed367aeaf6342bb57b69a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ7N2535374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425b7167ba77819df6abe274639ed3348b3c36e0f7b579d38b6d372592c2729c. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:15:20Z), 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/QZZ7N2535320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68419f1b80d6c846e4ddd32006754a005bbd52d9c6592e037cb4a38a42a80a74. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7N2535318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef36b8a7de97deba131413eab80d738433135e783dcd98ca85ff1cc1b292fea6. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:00:21Z), 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/QZZ7N2530298.