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 0x70a4144718b158e7e08bdc1774089484d1945884d09f18647e96eeb6b031d4c5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/631a7969-956c-4327-926f-bef3991fc8be.json and https://artists.proofprofile.net/proofs/artist/631a7969-956c-4327-926f-bef3991fc8be.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 0xd191e2f5a5ce2fb8fa46f1e02e210a951b0b589b747f180a582cc2408ef9f029. 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/SE66N2235431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad00ce386af3d70f1ba6081402d728ab31ba39f5d6a359caf29c13e7e513230e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SE66N2235432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f2397d2cdf583120e10ba1d52b00f71b6e24fec8b0db7168707a235b60e1a5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:39:11Z), 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/SE66N2235433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8322a289ca9281f304fdfae1793fb86146b3aa6ed1461cf86135d8369c25b904. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE66N2235435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d91f100db5ad0432ce0b1b835ec687ff3a73b6c78f5102d966dbecf8bbf331b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:25:14Z), 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/SE66N2235436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee763603e91bd6cb87a769e08e8cb70817e8c9ce22ae8c7b2369f064ccf0d1cd. 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/SE66N2235437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d4d6a38d0bfae07b939631a6d4480fad8d9997e8c1adcd875375392227f363. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE66N2235439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c95a658a5f7e7f84b15475e9036c495982973f0ae15ebc794d2b3a2301f5f7. 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/SE66N2235440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bb9a732393c04d66677bb872ebecf9bb97e1776f33a2c69e813cfcf7fabc11. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE66N2235441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabbd8b6a11a66ae6ecdc8a1cb343d99ff60e6fddde82b6c632c823ec07a95d0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE66N2235442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11152416e99861d52e97e73d5a7afdf6394bdc2e9e4c98411c5523e4a80c71f3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE66N2235446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b07c1b3c73d67d56c3be05e8ec3552ec8d093ae5e17446e2faaa8252dc7388. 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/USANG2415434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323afd4ea13cbf8eab5ce650c78bddb95a5f05eba5a8abcfc9cd0bbe3538e20f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USANG2411907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99afc066e5a867f4bee38286ce81a42aa234149eba4c61fd6fb67188d0878da1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USANG2441756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246ceb2a7762871215d52925d59d44b54ca1f3ea8a2383036a941f2ab8e1d116. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZZ7Q2402429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91bc5e2d942a8f328c9da462e04061daca69c130fe58606e464a22a150ba91d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX38U2503332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50f4e6b69d238903fa67be5e98db8a458c3b2c230a30b11f53116c491537b20. 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/USANG2447417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b07c1b3c73d67d56c3be05e8ec3552ec8d093ae5e17446e2faaa8252dc7388. 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/USANG2415434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d306350382f0d025ed220706151be2a67dc4a07f3cbc35e423a696558c460d. 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/USANG2432184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d2500ef199e1bb149f68848d6606ea899b00dcc634a307fec02063bb2bbee9. 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/USANG2481743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbf3af761c5fcd79a0703c561c808ca9cfd797cdd6642480206d4ec8e4d922d. 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/UKZGC2411166.