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 0xf1864c5f5575ce2a2c4acdcab8d2dd83f04e518c8717c72d883c110afbcfd78f. 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/c110033e-a41b-41db-8186-f67afa71abb5.json and https://artists.proofprofile.net/proofs/artist/c110033e-a41b-41db-8186-f67afa71abb5.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 0x9a812eda4448cecb328b2a164acded94a670472086f34ae3ae10572aae6e1b18. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2325908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04c412e6d63f8b611b15e27cce72bd3c8ad7fefed1cac61f42255ac359632d9. 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/GBLFP2418088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64725e42ec7dd8935b57013b5e3e39b822c830a8b186124dd2331b1b37ca02. 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/GBLFP2473152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04683a4dc412ca90f85d365f38b72539930de76ae554aac0d8d4c90b9c1f306b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2473151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c75f7ca6dac262083abdba2d6573f201dad6b1b360051d28867a403eb4ea671. 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/UKXN22381305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a812eda4448cecb328b2a164acded94a670472086f34ae3ae10572aae6e1b18. 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/GBLFP2325908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04c412e6d63f8b611b15e27cce72bd3c8ad7fefed1cac61f42255ac359632d9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLFP2418088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c75f7ca6dac262083abdba2d6573f201dad6b1b360051d28867a403eb4ea671. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKXN22381305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2faeb1a79bef3f504c357aed664e294dab608af7d86442b9ff8245a2be9dd4d. 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/GX3Q92346557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109caef44b9699effa777cd1622988105f899b85961cdfcd5d46a12e4848561c. 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/US23A1533304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe52db1a860e9e827e3b1d6f48cc896a2d0777c55fc44e9fe186a4956968c0. 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/US23A1535378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe01fee1e72d76a5f32dd4c430fb305f674239f187a38e1cc220f652dc416c0. 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/US23A1537002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f1c0617faae2ef3ea502fd5fb48ff11b446a19a63276089e3a987d9f15d22a. 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/US23A1540480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed72e3c20cd295cf2e66f8cea7247037c7cb185381bd821bfa44daee6107b24. 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/US23A1540610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125b4602f2062ee1a449b70989c1781aa7f47974db98c08631e5718ae7c3cfd0. 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/US23A1540611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725d56e1e58940550e5b40b8f5aba52114a6716e4ccb3b7a63b0da73a8cd807a. 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/US23A1540612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e01cfd937425bbf448cb185acd0f18862f0de13f4e73ed1854c8ae5927d76c. 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/US23A1540613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f1c0617faae2ef3ea502fd5fb48ff11b446a19a63276089e3a987d9f15d22a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US23A1540480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe01fee1e72d76a5f32dd4c430fb305f674239f187a38e1cc220f652dc416c0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US23A1537002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe52db1a860e9e827e3b1d6f48cc896a2d0777c55fc44e9fe186a4956968c0. 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/US23A1535378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109caef44b9699effa777cd1622988105f899b85961cdfcd5d46a12e4848561c. 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/US23A1533304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67527e3ce9e3e7a22ef84f78003a3d0774259f214068739918dc96eaeed724a4. 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/US23A1512143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5059ae51d8a51bdd2083d0374309dcb0c52a9e1d604e77755e7dc132c24f0f67. 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/US23A1512145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c119b3e0b5d9151fff774e389605c836c5461816c0db827508e858d2130238. 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/US23A1515086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf310b34f53b91e2035b2a5fc692af428ba4f58cac179dc6204691177ac04e07f. 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/US23A1501813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379134800a68899ba0acff9a35a7091ec8da3441bd24b9ac5381462b11ef1eb7. 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/US23A1501667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1c2adc6027c3f2db94bea2dd7af0d0a88a2b71163d9ac32b4e9689a457edab. 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/US23A1501278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0066f4271e07192f46b3aa047ac6770733540acac6fce690520514c2a5c8bc9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US23A1501280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9c9d570af5cced08a134491cbac7d16cc65b5984f9eac95d76bf4d76d1bf7e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US23A1501281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8d2b4dc5b25117a3163559c59318b23ba3b59f9d9b15c79a941da51a46e09e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUM72201505.