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 0xaaa7c4481f1a392bcb2969c42fcd2ad179bf6936c1ac3e99e70c977c31a388a0. 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/0b9a3d7c-ddd8-4fbc-ab8a-08352812b7ac.json and https://artists.proofprofile.net/proofs/artist/0b9a3d7c-ddd8-4fbc-ab8a-08352812b7ac.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 0x5ef59c5054815e8f0087df27e5db3ea1d728ef54a4636d5c4aa61e0a8b9b7111. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR59R1750339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2b9dd9fffea1470bd32ac10020d5939a72d92f90fa2f0d6236cea43929bf0b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR59R1713390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f39f1643b129fc7d790c624350ca708e57fe8a6a3c35229293eca716783359. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR59R1703577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2a00b48dd00b0fe7a5cd046a4984ff591bfca497b7fe06f266591bd283668f. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR2X41555735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecaa9742be8d0c4ab998d6ff8eb25478b705cce4b6627c4b996bc39459ce3fb. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/FR2X41555760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5adbc566934355d8f19fae1257ff746941435824acaf27bcbf18d14143f177. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR59R1712431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1de9ba07d75719fbe2bd049f3c85ffe7b44d03b897ba02632c272a11b5390e4. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/FR96X1702204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b1fd64fb10c61e787a977d56ddb0a81399e96b59f54bf529a87d446f85a551. 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/FRX201700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4e784efb7a27eeb719b017299ac31ab7e6d9baf6ce88d6c9e661d6120657fb. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ESA011954459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdf5c750249bccd0dcc1b835307ef7c6e4ffd2d2122bd581b6a4ebf64794fa4. 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/ESA012028510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0be5f49980532e9dd0b3a310b6e9bc2a14a9f23315a6b8ccf27297529774b4f. 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/TCAFP2182068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d648d76def7dee9304b9f196ea3cbdb3d1af38a538d98223832009bccda93a4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ESA011722874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1af8c4a501a39ce56db1f845d55b1c82be014c1ba3d9c6eddf204e01bb0e732. 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/TCAFP2156716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310423e7f2d97646cd8066ecc008114be5a7fbacd2157fa916da3bb9f5471fc4. 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/TCAFP2183544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bc0001589506bf572e706130448f434bbcde6118054e3bf67caa203cb97570. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ESA012074522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eac231528bdd772022add70d928828374831390c33a04f90ace969e7d413d0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAGF2269452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4be26a77d51d0470beb6a7f316bf5e7fde1c710b404576ba6bdaad56f234344. 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/TCAGM2249153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6682cb1d267195d84d5f27673de7e5ae4c16d5fa34d4d36bb3434709ede0daf. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCAHD2327407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b28b9de96519ae423c9d34e2fa635732fed28fe0529998ad9c024a3ec59533a. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/TCAHH2312867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0299ba8c3fc0f7a74859c6d5d0b2dfc4c43e36e902dae95f4e08ef300f5634. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHU2465485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb955090a6b488c2f5fe279b6480cea21b11bfe5353b3e9ccb6af425ecd3176. 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/TCAIK2449655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc432d6bbc910271332cf2451ccb0c5a01ee9e42e7a0975fa31c8f407970c83. 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/TCAIK2498183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055e758b8cb341a33d9c2a0eafca9c228005b2cc30272f135efd6548b451acd5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIP2455363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d107cfd89e9b66e1ea2e94911a2cb1561c9eba0b6486f3c8f204fc06e8fb058. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/QMDA62421123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf041904db72559141aeebe876822e99ad1092c835bb31b762fec55e5258d1bac. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJA2428792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c882886cd1538dda16eb1f2cd2d2216ae3be5aa5b9984de00f51ab63f5c7ec. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRIDO2416846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe884a79eeec94d9c26bd8ff0b937924c4bac361883096b38b09ffcf2a4488758. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:04Z), 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/QM4TW2541899.