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 0x97b0422d4f1d177c548623f249ca313985911ec76d00cb1501f218942ae59f5a. 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/5214fb74-0c4d-43c1-8000-4f871df70c92.json and https://artists.proofprofile.net/proofs/artist/5214fb74-0c4d-43c1-8000-4f871df70c92.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 0xd19f63a95e5f8026975b1683ba0e0f6379e5d10a301876eac24b942714928823. 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/DEPI82324237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cff2adfca0d9bd3e7b0f310733ac08273d6c657701db613522294089593f058. 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/DEPI82324238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a29bfe18badc90b690678e3fbaa038e881c8450df106f718a116d9129f603. 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/DEEC31810449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b370603cc99fdc913e1fb5f4e15cb79890af939571b1a9c22bc693b10ad80ed. 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/DEEC31810451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf02873c5730fac5df3a28b7b2c8058e9702be4ea6e3f83d34a6fe820a2d78b. 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/DEEC31810446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb01dc8502357beb7a407330541ee2352653710c1c166ade21a4de5decc8e49. 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/DEEC31810422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950669c4edbf1bf5395910ffe84f82ba06bc7dc2f89883bee25bb78ba43356e2. 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/DEEC31810450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb19b19190ccbf7f36e3d21ea4b45b9812e2bf1de2da35373418ef089947986. 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/DEEC33500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08e4bb0c55200570391c924a234a37b34e23ac7a7dfb27b776e11cc9b2694dc. 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/DEU671901230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b9f91168153e3b497b4c2c1d794e05f72681e1d66b4bc1dd258e44d26cec79. 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/DEU671901237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9fd5b62a88437881fed4d794659486d352e0a713a582fed14ff9cfcc470ed9. 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/DEPI82415317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca928db013f1a74410a443b1725b9a27597e0d2a6131d55d6517dcd7dd97836. 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/DEEC31810546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2702d6f830202a0e46490ab0fcf812e95c10664e139c043430f47fce244fae6d. 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/DEEC31810543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744b0c16806b8ce7c7b50b7dc27ca28d53ed7fb7a8b2a67199da578f200969c2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEEC31810547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c656ba7ae665ddc711bfceb8c313f9e94838b7ac117799f686d00ad76150a1b. 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/DEEC33501473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7140ddd75378ff25fcbc7cfa0b5952a25b12f47f62bcee7d66f611aa4fe7ef3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEEC33501474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7f64eb414bff1c772206e3c28030893438bba785ee9426a5bae4394bc51c23. 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/DEEC33501475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7908e2455a17d0dbf9c554fe66d8f622690fec167c7fb619ba3427d57657d36e. 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/DEWN71700334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc977f2404fc5c4f1c0f5a8d99f1e7895dc9cc2f5054be2fca747c36981e47d7. 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/DEEC33501394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c727f19d73467122e4a711934182948a9b15bb1dfd7f4a92c35ad7a880b883. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEEC33501331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760ca34ddfefc605354c56658ab682e6c9e9bbdcedd2b089334d8c36827aa7e9. 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/DEEC33501332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9570bcfe3796b2d7399202a8b153b6f7401d7bf33158125fcd70f046aec64e. 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/DEEC31810517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6476f7612056b316f4caea77866da9ba934afb81d22f048e388c793956d87ba1. 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/DEEC33501196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0b3b0f5e8513b7f48847dc864160611b8a7680884e7b4127f31e6ac5f3be97. 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/DEEC33501199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa80fba01f0914e5eb966639e1967369c95377f80b7eaedb45e1f08963337def. 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/DEPX42300641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d56b1186372749fc0533631e7dbfd823ed3337d5b29b5fc56dc5ace016b880. 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/DEPX42300642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa80fba01f0914e5eb966639e1967369c95377f80b7eaedb45e1f08963337def. 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/DEPX42300641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61742cfadd028f5e52109880a1eb6bb2fa6469ec2acdbd0d23cfabf8770fc3b. 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/DEEC33501130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541d03954c8ae2507589b90fd8ccefc8f65a078d2917edd41f3ea51ee3879a24. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEEC33501133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186e5fd7a3b87468d4ccada6e3c52c5602284d9e40d64abe5bcd457bad80f622. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEWN71700296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a29bfe18badc90b690678e3fbaa038e881c8450df106f718a116d9129f603. 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/DEEC31810449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950669c4edbf1bf5395910ffe84f82ba06bc7dc2f89883bee25bb78ba43356e2. 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/DEEC31810450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb01dc8502357beb7a407330541ee2352653710c1c166ade21a4de5decc8e49. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEEC31810422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac24597d954236fe2b092d5e206ec255ca3cc1c1f94482daa1c3ae20835a27f1. 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/DEEC33500731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9172d917086d513910c2a9cc3547ce6ebfa572f4b4c1e5dc453028176e1cb82c. 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/DEEC31810340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86845e0a4e60369a2cdd879618fd864044e9b20f0d7ea5f529a1616512a1bd78. 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/DEEC33500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb233a0cba2f3928d1da20c9b71b5dd5ac1c84fb69a69687a04eceae9008e52d3. 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/DEEC31900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9570bcfe3796b2d7399202a8b153b6f7401d7bf33158125fcd70f046aec64e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEEC31810517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5e081756ed759ae7d4f463513f82cdaa4c36fc9fd3ffdb6a7670d385dfc841. 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/DEEC31810361.