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 0xee62778c3fe87aa2c825721b8e51a2ad1506b4d1f890bdf0518daa8e7928aa9e. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a776f4f1-a107-4460-915d-ff821983517f.json and https://artists.proofprofile.net/proofs/artist/a776f4f1-a107-4460-915d-ff821983517f.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 0xda84ef1a474d60c5f7d89f817a48620566a4a10192405220ba5c1cb3b90d0dbc. 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/QZFYX2144452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c19020d870ddf92fdac659307a1701bf6054684661a6b9bb2c33964b137e37. 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/QZFYX2144453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0135201248fd0b52980f55db0b94c77bb56be545a7895b0a34bfa8c7ced971e9. 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/QZFYX2144456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc6f6ef506684d145130d01843f4d8bc5d389f26363faf6c4305172214e61c7. 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/QZFYX2144457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca660114b18cdc2183fed2ce241c193581d96b3f01d26d90d87974e95fad4987. 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/QZFYX2144460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dc9841e2f7d38bc5a3cc2a545245a1659c7dc795a2f0a86e3c95940a3ad188. 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/QZFYX2144461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7209918a428382ca7581a84d77eda6ac5ef32bd21661bd4867a9e374ab0a25bb. 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/QZFYX2144462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef99ec8be558e16e5e0829e57ce4efb79f4869a07978ea4c1bc217a11d00dae4. 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/QZK6G2017082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f02db3f256c86454fdf5ef16cfc8114c33996a9a5ebfccf6da605abdcb2ba7. 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/QZK6G2017087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bd8cef752e0c3890dbf1f999f364e760046799a9da4775e0149bb3605e3027. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZK6G2017084.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73f89769a37e14449580f531f2bb565dafd2dfe9ebc7a9654ab6ff738b13cc8. 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/QZTB62261392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f8b998fe12318b9a508b2cdf1c986d637ae6591678ecee320c66f3ffce6de1. 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/QZTB62261394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe790d70200a925bd3da4f5cd9bc27c40acfd710a1a9bec85150fdf78d891e6fd. 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/QZTB62261395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e876bb567c97ebae4fb31fde2b3c4fb1a7ec95331353af51d98e10a22c12127. 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/QZTB62261396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06302163aa2d3f3d8ad45f38f1f6bdb35dfe5ca2f4f0ba5d877b12eb2551c4c0. 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/QZTB62261397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701a24af2b4f3ea1823b24fb97c7f1d3c7c9640f5c32c07584a69055f07b8bb4. 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/QZTB62261401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b7a8cd517fa825e21167c9278203a98f0667bf2f0674aa809bda58380ab99a. 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/QZMEN2370195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9859ac943d4da1a8ecd87b2e9d7b03b34618760b55ee8ee44e53d3b377db0b73. 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/QZK6K2147455.
If I Told You How I Feel Would That Mean A Lot?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0d76a189924d9113605c505dde7074475e1dc3116b2ba30c58fc617cfee46b. 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/QZTBB2326145.