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 0xec3063a2321f29bfdfc56f7a8cdb625a1b99063fe0567c31d13340314832ae55. 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/27355420-5944-4f61-8d0a-efb672d90d47.json and https://artists.proofprofile.net/proofs/artist/27355420-5944-4f61-8d0a-efb672d90d47.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 0xdf24f2d3055f9a24487268f4f9286c3e0aa27d4e17ae454108f5ddafca89d17f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR59R2032964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e3a0039b5b945cda20bd3fee9ccf00798d0617e675315a979c6bd76ede3658. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/FRX452009370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47245b6e82b4c2bc7bfb6a6b30a70aab8cc950bfde25120a7c4382c4c81d4fd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX452009375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaad87194af6175627da9065352f39ac4b43c4e56e7eaf24466d37d76310d03e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:59:25Z), 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/FRX452009379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42747cc8ba9a37d18b98d517f9f96f65f33f8f7c65d7d30947c3cfa2da1ca8ce. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX452023126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b01c5b6edf20413d6e879b6f9b2df072fd92e0e90c042cd77b3f0d5d344832. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX452023128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215a4fb825560e079284edcb173903e6803fc239b84bb9f58e2e167edf56b63b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX452023130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f58174efe3aa57032c28348d44debf90ab39fbaaadf539d2bfa364026489f1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR2X41968464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9263470c9ee70e09ace6b94927b891ff77daf37899fd23bee62af5f7180fac. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR2X41968468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c2a2bf1b690b0cd56f5f19007783b14e424f8b4b784ff2e9a01afd823a4737. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:11Z), 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/FR2X41968470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556a463ce52be074858a4c5fce7b4869bb17e4f9a1e1d0bea93e86c3b9c511fb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X41968471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4b3944d3fdff9505c13044dcda98ff1e45aa71afbcbc3413881597061f3296. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:25Z), 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/FR2X41956010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc46d4041ab29e5cec7cc95a95be363862d73b7924bfa3a485392f2f546058e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR2X41956011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb302147543b9e18536c880f4fd62e4f3761b4b8ee323c736bb8a5aef2ae6dcc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR2X41956013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11195a8cffe9612e59ac5974b8ec2d458f6c0dcee18488896afc4c0acd98a21. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR2X41956014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45ab9ab3760a8ecb9d9e37ba94bd5696a77e560d614bdaccfbbddbf531134c0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX282012028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770a4611a70804a89581caf72fd19a7b13e92990cb5c930b9d51435c458da141. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX282012034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ef4c04678c4ee2007c0d1d3b170c3f9c4f32e0b4636913bb5f634368a62382. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX282012039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9ae0eaa67bb2fcdd5f7eac8e8fac557e63c96dd52388f80560ebdab77984f6. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUA1D2226046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef37515a0c0b364a868613bf0a6f99d3828846c22497421c03e72687ca51c58b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUA1D2312118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41955b4fd038127580a7deeeb6371964070e2da4401302788b3acecb3d3ef30. 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/RUA1D2351892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cee979ede389aadd8be1c421c055438e9443d0d6fed65c7e77916bddcd13c4d. 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/RUAGT2350858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fc17295ee72f5a525cbfd9595df830925c9dc73e62e19f4e089e93a586cb36. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/RUAGT2350859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44b5c2cf986b1c31c2c7a32e1f4bddf47d9c5f763d2ad0f91fce5e0e37940f4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUAGT2350860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9888a65e5c01ca3dec93ec2f1eda8675953433454827f70e8e3d56c3aecb9de4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUAGT2350861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cb74619b2ed996c0635dafb5535e5af3323fe067c6865c9f9343119726ecb1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUAGT2350862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5927f552f19c9ac7bfd0fa3f60f670aee3f62b27f2b3b84e53e1f4a545e698. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUAGT2350863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c036abd4476263d7490ce763624061f2cfce45d7548197e7faa76a5e0db2be. 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/RUAGT2350864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33bec3d40bb3c2d789558727bf7f5a2ab416a38a7d11692a79d7be6d5a5476b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUAGT2208513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840ebb91770795adb16aa28271d92e58d829d8c0e1352ae49d442bc818637906. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/RUAGT2350867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a496beb2a09269ede9e6366fb6cd31b82706b3e049f80214c19130daf220fb. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/RUAGT2350868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe4307a66e910d915fd1a61fddaac121c09d1204f9a754eb7eb24a4878b0648. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:02:44Z), 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/RUA1D2553493.