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 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 0x0e12ca9e61c94c3293796ae30983eb9ec844c073022865e61cb2d7639311a9d8. 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/797336b2-fec3-4225-a387-2d474c8f59f7.json and https://artists.proofprofile.net/proofs/artist/797336b2-fec3-4225-a387-2d474c8f59f7.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 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 0x3e8bd3504be23a3f62a71206fdf4dc2200c43fe52ad71197a58406bf8ac95ddf. 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/GBKQU2176876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d655a944f3e1c5b844bc72624d339f0f79837da07ac61526f6a2b4f4d963a3f. 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/NLCK41087369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61c5301181bba16ff1e52bd56f214ffc5e1cdb8e6793e7acf794b70bd7efc10. 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/GX5MX2114938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780a0cda19bd5cc39a4dd8cb01b6af8987c4eb47e538b8334a32753e55b1925. 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/GX5MX2114939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be70fbe201a87c6754949b0ee66bdb13a1e77089ae1149e266f2205f1fcbada. 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/QZTAU2169099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1eb1912dc275312f0a40786038422feb0f3397f899865ee0f07ce93b84d3dc. 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/CA5KR2186948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cddca047ff0076a2e3a2ef6f5ab9d951d70f918923c39a7e55636c1eafb344. 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/NLCK41096101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390c8e7b8a314d0973f3e7d8bd3e377c52b0f0457d2b43b46a50351de0860514. 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/NLCK41096102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a151cc01e8ee43c32a75660ba1c245309b7e32b22902862662ff161a6d0a4a. 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/NLCK41096103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd15a866df968d1372a30a77ca9529f0bc6d68bc223b3a1d93035dfe3c088ed. 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/NLCK41096104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16135e6378419f5d1fd0731962fcafd41ae69d30a90601de2df6d350cd8dbb10. 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/NLCK41096105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c84ee610ab15bad5d8eec99b6317cbc0b70965ea62f87007a04ea6283a7b81. 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/NLCK41096106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d00be40b4d6a95592a19d4c4be66361d0c9ae44cabb71194fbfaf8e4382d89. 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/NLCK41096110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b57ee5794b07949a04bd87a6f376d81bc5b1dead9465f46e43f68a86b99119. 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/QZMHM2416768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d51e64743ca6aae05516f87365973de3ea7a449701b8390c0415513218ac4a3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:53:32Z), 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/NLCK42234716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7256b5528097e4113403ddb4c0844d849f34bc7da2cd4f8977eff2290858ec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452387356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd5ff17448a22fde76544fb8c1ba67d7e9d1631d40be22b412397f7a9bb4b95. 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/FRX202214936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753e156ec2a574a79b1940d49951a311269d9ea9faa45eb616d7506dcb8a7efb. 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/FR96X2225794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c364bd6bf5143228311db402d20d0009f787b3e520c77a2fa8dd6fc1a208fe. 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/FR96X2225795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1d0bed49e8de0d26b1e4f4025501c09cda80f68b629f3c0987c5447e533df7. 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/FR96X2225796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d3cae72054f9ac3d388ba490a88ead1e4f1a2a7415a78cfe39b9828d5783cc. 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/FR96X2225797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3beef16c0df70077c1794f3c9c487fc9b584783972e1626f6b69584ea6716. 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/USLZJ1989855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275bc72db5824208ad9ac611b5551ac41623e92bd5c9b0a92d84935255e1b82d. 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/NLCK42227136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa811141f372fd96f03043de029ef5bacb87bbb54098c8d41ddc4c6104e098bd7. 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/FRX202273779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d970d6d3bfc27d7a55ddc665ba8237391b4b84d7742fe0621a91bf9089316db. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRX202273780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26271ab2ee10e34e00b0414c87b8d8f7d95a0a4217f7a097e80ef71888b0104e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR26V2058739.
Electric Heartbeat - Cynthia Spiering Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07794279087053789dff785b1a407471005bc2487e5ed740d7b562dcf1364b4. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/FR26V2058742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b161b726f9c7ce8569c42815bf052928de5ef7f0131287097f667637922d9b. 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/FR26V2058743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495febe0e318e0ff047fd2115f71ac252adc7655261141203b9f2774b7b35c27. 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/GBKQU2099170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd872ccc669b8ef42d3dea9b6e394b68d0a13e82dedddb21b20fa672ee59170. 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/NL3WT2000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da525caf1487c3d59ca0b92dd0b53e1ae168821ed1757a99b909fd049479956. 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/QZZ762432379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cb8572f014a9e940ce125fc90b56739dc943e99877a1151ad8f8d3063a4d15. 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/US7VG2538650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7403cb8abc1600885d5e87aa62384da8196a4025563e7ceb0be45a752e813fca. 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/DEH742503594.