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 0xda1d3936ac2e45f9af508aaa6f4a72a71f1bcf6bb91cad510eb454c288e4f5dc. 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/1d18c574-15cb-494a-9d8b-de141fbe87f2.json and https://artists.proofprofile.net/proofs/artist/1d18c574-15cb-494a-9d8b-de141fbe87f2.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 0x3fdcbf7018f132792a8a80c691ad84490fa24382ba734394833cc1dd3bfcb4a5. 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/USSD12400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48c8b23d6cd166b4363440df21a7abe8ae151aba114577a4c568ccd55ae4ff6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD12400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dc733c4c75ef4ca650da2a78dae30f1c568c9e2c2087d5019e9736c6bca1d1. 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/USSD12400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d06c0c9dd0bb5e27afd3daba301b7879122638d2afbb15cbb7ace54c70affe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD12400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3162986f1532ff3d08331c682dfd304849ab339e2e3f4d125ed812da86c821bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD12400274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05d14dc3aa310cd822f78354477f7af05465389ffc08f0ff9939a7ca8bd10b2. 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/USSD12400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9098eaf09c5fbaae6a0d6247d1987fe22fa2a2912b41eb7bd2499353f3dce47. 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/USSD12400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d65fd4d93dbd0697705b3b240e6e2b4852e6cab25b5d4500b88b0d0c985f0cd. 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/USSD12400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188932e5bf939f549f370f4d49c69e93fab3bb3454ab30147d716222c9ebec46. 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/USSD12400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31614a479d8104b62381b3cf797d0be8cf191233e5e30ea9d55a0a1d2c6337a. 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/USSD12400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa9a4686f2d9f5e4c9ac2d9e62caff479e5639aa62bf7db911b33a7688a33a3. 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/USSD12400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd063584881a64bc9c2a41435f05c88b623c5bf0fe0f9852b32e9432042a1c1b5. 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/USSD12400280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4db5948db95c83c4812aff8045854aa8b003f2f49419391828674e5b723b939. 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/FRX282451193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880755487232570b7699b54de2ce73192f4cd8f7f782a5514d63c73b2160b381. 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/BK4DA2407454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327482bb5bd88654aa93dca47fa4bd5eb87e2ff03380701e6270970feeed339a. 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/USSD12400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9cbbb19c4cc552156e3efc8d82822a646e1e80aed77852204a3641d56e7e0a. 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/QM4TW2498258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2980af2cb5772feddc7ff558416a0453f2d26749d38959d6627b173669e03807. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD12300678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72801349be482f8e77451dcc2481011057fc57088f0159599e93bd9ac5cbf279. 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/ES75E2307089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e5a9df7698eb7aa213f00ff77ee33f98cf9da7738b91d880a99fa2433406e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD12300462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea64bf47d8597384ff2e999569e8ce5312c887987f5b4edd6186424b76a41a4. 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/USSD12300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b4ab5a9585b0f5c309373159ff1a6ecdaa347e9afd1376bdaf4e0f7e08ff9c. 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/USSD12300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc22dd77c71b0d0fc00ebc532d1461e38ad3d7c2af4a41bc66c2e4c1ad95ab64. 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/USSD12201305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce34ee5cbadca465a7e619d06cb1425aec325da7cbee6ba3da74608348bc326. 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/USSD12201202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5087e11f4ac921856f37d41f72914c6bcbe57fea809b14512bf9ac7cdbd57fd5. 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/USSD12201197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa946fddbc8ec6639e3cf3c33d9871134795db0f8ff75090ec1c47f6b5e1966fa. 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/USSD12200617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dca1b097930d193c34c1fc61ea6fac46456ee4ebee38a6d17719d1cc768fec3. 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/QZGLS2263595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50487821fa94c6c373e03a1de21aee1cae0e820d9a36c1e969b25011b8c7ffb5. 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/US7VG2242010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e212fc25d52fd8d64d58a58c00ae974a24b6305dc24def4c0e7e76a229b508d. 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/SE62M2117610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde90da37fda7deeaf0230663d1aba52ee1650eea7e9473b609f1485c0bee4a41. 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/QZNJY2177596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58387f8a983105c880b034322224e5be27adc098d44bc44746b40c540cfd9df9. 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/QZNJX2104815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f9465c812efbd65c80550b7c27b7caeac217b7bfb1b935a915f31cf0321be3. 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/QZNJW2181773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679e9053146e4e08a630902c1b9d9c78ff29b2e6d9e12603e0f6e7ce0fbcbc1f. 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/QZNJV2123777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2114a87c010aefbef360348dc0b3196bf313fde7cf6dbf0e24ada7bc715868d0. 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/QZMZ92154516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d45455da5228e0b21f2345b89c3ac13ba919d3389f19e422a9002c3a17adf76. 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/QZHZ62166570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9739bb9148b3066ed6bb1f5de9228e8ac42cd85135c791a3c4fbad74d60ae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ42161788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229e94aef2f8815adceaabfee5d30aaa1256a45249e01a7c3ca56e8364dafc54. 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/QZGLS2147882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b8dbac5b7cc5b651af2c091c99cda2b3f860943149a5dd0445f069e79141cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2177312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4356413f573e9113aab5fd2e210f8db01087061b62b2cb61e108c9cdd9c5670d. 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/QZGLM2177436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff1dadb6a0e6a29d695603e44a31ce7279918d221103c745ce980cad4c810e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2177381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ba7dc8ea0ba61ddf1e49323c42680eee17cdefd9c3af275b86e9ea5cbce117. 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/QZGLM2101035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f0909a4567f30e279c21a2e557ec19df2ab9bcc5504fa354010a608e16452b. 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/QZGLM2177449.