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 0x75c34d1c12ea2b4ba5cf534a2d23db4c2d400e044855f56d2cffc099f3b119f4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/131b8406-f368-400e-bd8f-97afa99db1aa.json and https://artists.proofprofile.net/proofs/artist/131b8406-f368-400e-bd8f-97afa99db1aa.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 0xa61502580213790a8cd00473734be5ba9f8a8056f6fdf77caef099135af14346. 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/FRPJ01311310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cb6a63dd097775602f0ffe9de1cceb60c208c7caa2752327a0062499fdf01d. 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/FRPJ01311330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbc2ba48c45d894633bd0e2e40ca5981d896f410fb159e798d1306b19d16e21. 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/FRPJ01311350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecdf4b7850846b6d3ab2a7e19c3d012b06f58db7eb96286fc797137a740e5ff. 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/FRPJ01311370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1518274137961066167310784d4a6b80b43315e6e18bf4fa4af888f31b98a8. 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/FRPJ01311390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70696607efa83d1cd5eb7125771f7f5734ccf8924e841826ed5707b3f301de6. 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/FRPJ01311420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d26dbc5ec8d2c6d096e119195ad5e14634254b0ad156b4a015391e486bb1515. 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/FRPJ01305840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4db04050be82d175b6aa5eef3ad18b93f580147c93101433052b339456989b. 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/FRPJ01311440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb550ae60f9467ebb1c8aea91a94c0d38444cf533c789deaa17cc556ce6cf90. 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/FRPJ01311550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a5aed2f5424730d23087bb60c2648c397ac19b0c7139cab5789c84ce82f3b6. 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/FRPJ01210145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198e7d651616959c9d8c53525b6e6f9326998c83618fcb70bbc8f3e6565dc19d. 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/FRPJ01210152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a5aed2f5424730d23087bb60c2648c397ac19b0c7139cab5789c84ce82f3b6. 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/FRPJ01210145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198e7d651616959c9d8c53525b6e6f9326998c83618fcb70bbc8f3e6565dc19d. 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/FRPJ01210152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba7b05d0c3213b0aa29b40afa13ac35135c3fe408a1b3f7faf6afbecbdea003. 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/FRPJ02201831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8ff5b4b042fff563cd6ffd995e4646b5a5d4af1f120867056610d878dc6402. 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/FRPJ01202787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84f610dcab4f574fb8773943cc0188564722d8e80beec5f866a73035c0b4117. 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/FRPJ02201835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15b31b1fb1fdabf96de298fde5cca5d3805ec7f58b467d82cc7258625e504f1. 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/FRPJ01210146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de2b17a95b0434ec926c4a8e42a742c809691190f8ed0a3020f5e973a247ec1. 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/FRPJ02201834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dd990284f662963560aff50595248ed5b7a3ec19033e435db96bdb270cf0da. 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/FRPJ02201830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c024719bb8b4f38c1a834e57f69fe57481af600b8ef05936b642bf463493d73. 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/FRPJ01202783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36de6f6657efe54da5015f19129dbc098634cf06d7eb48a99d305bd32e8d2d2f. 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/FRPJ01202784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da75e5cf9959e84d8c8376472f30c751be43a4b02076f9369bbfe69dfaa792d. 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/FRPJ01202788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e1b35d7c278f297283bdf757d0e67a34b26fac2443ed264ca33dedc01d09c1. 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/FRPJ01210150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9c3f13564da5137d077f04d64d833b85490fa5b2daf5bc630ba6736adfea70. 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/FRPJ02201832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbaf199fda58fbc91a832bae59fb0f95350c107ce2660dc6951a894753a620a. 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/FRPJ01210149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8821a0740a37a9f532c531095ed3a83086419160daffeafac7ca8c318e3371c4. 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/FRPJ02201833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c217dc7bd984b4f5802a52c8a2dbf7ec0bf71c8a9edd9dfc291640fbf7c4034. 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/FRPJ01210148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3234564fc6eff1b882245a48efb7743a8f34e1ee18e4c3bbde992c09f100221d. 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/FRPJ01210147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7a828b63e5ef50d7191a2818f169ad25bd1253a6729d278ae9363704ad4e42. 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/FRPJ02300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a064ef2ddf87ad10d221c6cbbc26fd17cfae0c723651f5138562a093db5f2ba. 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/FRPJ02407010.