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 0x6156ceb628bcb6fc2be8a4d34a8dcb37c4c4ec152f036961f0a13ff7d88be32d. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba35f1ee-b3ca-48af-b540-c33ec5f4b3c8.json and https://artists.proofprofile.net/proofs/artist/ba35f1ee-b3ca-48af-b540-c33ec5f4b3c8.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 0xe59e9dd9ff8298fda414e6bb05d9b9f04c6f99ffcf5a4f08c2245b6e477a9501. 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/EGA019002010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91067a4fb7ea47439da08e78e9dc897d1cbb9a12d3c2095a02887cd7a2ece5a4. 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/EGA019002014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08968b85507c816904ec8ad2fd960f851217c3f243965a2d798cccf6a313da3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/EGA019002007.
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 0x7b1b0047c72eea63bf6d5bffa51fb435fa587c8f9db6561436bc753aacb231e7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/EGA019000740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166a5c845cc539eda04a3299c0d28716aa4099ab6e4b33e9d316ae8927f6dc93. 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/QM4TW2115810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4231824f439f1a89696205d680b1bc3387983627551da2ddbd81b8f2d9d01ebd. 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/QM4TW2115811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ebcf73a7bcad9913e1a77650f6fd8dad487878d20515dcf487557f9d38a328. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QM4TW2115806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686ca99a4d4f39ea1ad98aa46a3724a43c2eca5f508f6b9e80e94745c3642599. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QM4TW2115808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6497dbd8c1f68c583c6a20c3d037cbd221113e26ed5a1516d7b3691047d9d3b2. 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/QM4TW2115776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a040eda62fc3599ef82ee218686182a04b025cc00f9786bdae3ca445f14ef1. 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/QM4TW2115784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2f07eb2112193dc8b870c718b1d82b07b44c207e8c3b6cf8b8f95948696ffc. 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/QM4TW2115785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175eaab1b19e023112b9b5a24c08fe509be562def6c2650d921a723fa981705. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QM4TW2115789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9468a2f3e9bee471134a9bb03b3dbbb547dfa67da40cfe86599b389cc6dd3dc6. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QM4TW2115791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b95c5429233cf49c28872d7ba2338c21b5a0ff6867122e2b783ac3096306f5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4TW2115793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353f69cd58560072c4ba0c1a1e296bddac31b9001f4d380ce1101cc6e1a52144. 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/LBA132402042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cce2f420e36c26dbb9470a68b8a6ef9679d5900a0cefc46b9d0253984d17c1. 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/FR59R2404869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9288a67027e77b34bebdaf161773568ba9086cf6296cea91335a3b24e7346797. 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/DGA0Q2370548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee26f84b171cb0a63d980857505614502b871ecf835ea3cb81ac5fa46476404. 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/QM4TW2108277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646c844b774b78d33b35ff1201b981220d253516175390ac7951c501e001db38. 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/QM4TW2108280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619408773f92da2993cf1a7fb732a665570d5382c7725d46d7411992bf0f4bf9. 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/QM4TW2108282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52a25def4396676be38866caa1f9a3a8a96dea4b64b5918ea972f022fdd66e3. 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/QM4TW2108286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb20a584a2e55ba7ea6f5fbb822af1fafa918d53e78802ad3d709c0947630067. 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/QM4TW2108287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc05deacf6ab5bd3dd67a6dd91effa4fb5ff3d30d3cbb7ca0a7f89895909fcf. 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/QM4TW2108289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bde8efcd8fde1ccf30c475383cf03440d0a8826210405f88fcbc160b9cd0b2. 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/QM4TW2108173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afd8058476de5c2f279850e6f096b5044a9e619a55fb986d956f0ab341f3331. 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/QM4TW2108183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22597d3cd545e991c32caa69e4eff466097d59712446db2ce867b11c65ce2ff. 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/QM4TW2108188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fabfc2c6de9c5464fc595e9a2aaef1adb5ab1cb5413c424fc90ddc79ca42b4d. 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/QM4TW2108191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac0c0b66c23135a8f841aa45fbac4f2a4c20a508b00462217f0ccef2f1993fa. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QM4TW2108224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c13d14cae6c30aeec512747c81edf533c80026f197d19ae1d9271476cb4267a. 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/EGA019004346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bda09bc4a596044685d309d2724fd8d233c90fc99fcb89c9b6677f9118f63ed. 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/EGA019004348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ce74f1b7690d6d32047760c99300ea96a6742814901d22f64d7153994a45b4. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/EGA019004352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6be89d72e2b128f5c1d8da8fedbe9941e753fcd990493aba272b28dc68d508b. 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/EGA060702509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2918307ff5b9f43c23bb5e9764c248b2d4646c1bd15ca844b62611eb31f53e83. 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/EGA060702510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94a6aaec061a5b5c07943b02b0f6f9f72608a51567eb74b95d74874f6e74e3c. 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/QM4TW2108150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a4a334d47f6d4c34fd34ed503edd05a6c7b3b44fc76309dc49bf8c1278b271. 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/QM4TW2108151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a0a747a8d43111c19682c457e8e6d8e6fbb9d07548b6e8f4970ca5690a51ab. 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/QM4TW2108153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969805f5d13f9668191e9f8ebabd6d41178d2ca1df6acfdfb2f6616aa43e61ed. 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/QM4TW2108169.