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 0x8c2d4f3a6658a9df473cd665e2b9f92c345ba40a790df2e60a2719dc17bb8a64. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/989ad1eb-bb3c-4660-8889-3237b8c2083d.json and https://artists.proofprofile.net/proofs/artist/989ad1eb-bb3c-4660-8889-3237b8c2083d.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 0x639c488a126970c3948a665acc5dfe1149d87d1447d76ab1fbd15bf22b399ab2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:56:30Z), 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/FRX282285861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fae4b2c469b91e4cb2c6a0ade5afc9e103341e3c8b8f0f42c3295925f0a96a0. 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/FRX282285862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5994644ab04a49d722dbb58ff58d469587008644d13099578481874f3a36db. 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/FRX282285863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21bd33177b7cc15572b72101a7d0b064b73531391de2732101c545244af7f64. 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/FRX282285864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd614de1bd8d2ce2d69582a09e877f3050f8a0e068054a151bc84c6b86cd3b889. 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/FRX282285865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d89403a28f03d1ad1ff07baf3237ec045ff95776f7b75b15cf2d10f07789f2d. 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/FRX282285951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fe03ac88d8647727898eedabffcd06f3d50dea8c857f2dcfddb0a7f8769412. 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/FRX282285953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4e7d54b1c80677dd29242f88652e673cf959682f20de800528e64311a0c099. 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/FRX282285954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a46e669377bfc6487e52c4fda054a5caf5393396c7f433b83db65d379ac955. 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/FRX282290600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd84f176489d62d3a4c0abbfd212dc86edb69244338cd96113b7b8f533301cc. 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/FRX452206779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bad244059821fe1ee7ff14bc3e2cdec4103cff8c57d54ab30abfadb594b3686. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX452206781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bf30498d26935e2e43b43ef4fd5975ed56203056587744997355f4ce68b47e. 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/FRX452226407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd611ecb323191e561fad0619a07a48cf79deeb7dddd33d2a46117543b49550. 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/FRX452228378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954cf0880ec4133d45247e3dc7e44030a4b537204be9c60e52796c7521798287. 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/FRX452239679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995c6b83786828b7e70143167cbf9cde613bb539b0a9ead265e4b7da89ac17cd. 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/FRX452239681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d8065d25123ac6bc126bca48524030a3c367120f8863d88c48aa9d98c470bb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX452239687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07542bfcf4760aa1d7badfda5a238ab137b503eca1a6250e19047a57e7900314. 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/FRX452246935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf16501ba148ae12b3cc9f3eaf0ed08ed12cd132b21681344db8f3c031dc84f7. 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/FRX452246936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746ea6eb023cc6f0317a5c933b4163f841f528dc3107b5f2e4cbb4d2f7561411. 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/FRX452255941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8992b2501cffea4b1537ee6390da8da58ce2a2f1acbd5aea639fda948aa8f8. 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/FRX452255942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b449b31d1bd37c7c43f9df0b7879a6f5d266e3d2bec93fc52b007d3d3b0dab. 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/FRX452255943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b091e0b604c663bd090b0754ba1e349c524f6707d534ea2daf9b43d020e997d. 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/FRX452255944.