1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x799816303d92eabd3d469a41e6890cd78280d55fe8febfde52d058fc98382531. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f303b48c-639d-4ec1-8c59-6faad9d06707.json and https://artists.proofprofile.net/proofs/artist/f303b48c-639d-4ec1-8c59-6faad9d06707.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 → block OTSBitcoinBlock must exist at that height 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 0x4649b8cd8ad4f6baa32ef3ed1cc7e97f5d969007fac7f9d8bafb03c8e17a3d5b. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/TR0331811468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e32125c76b6bea0c96271792c982d09ab44928c092e977d954f108c69666e24. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TR0331811476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f02a4617dae50d90b304bb03857be812107d9cbb74c598f3d56eb0db698efe5. 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/TR0331811474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4289e3e98a9e434a521758139a29177e9fb9da9dd9f01ce8e455e9e7e6b3f202. 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/TR0331811477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964757fa187215f24230c4669dbd5eaa089ed7e625a5bc41c6bb6da156c2b1eb. 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/TR0331811466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cb51de6b11501f6b397df4890d332a5880328271d69e4a1313bacd81c38553. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TR0331811472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe709f3e205e085e0c7d4e4e7f2dd371459b23e259ec81bd74fd6ab49ddddc23d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TR0331811473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce7eff2a576ae4c0be7d9fb18e46251d027c269eb157440cae8f86412bf548b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TR0331811470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2504491123cd80e00df1e30fd015b3a511b304fa6c42fda865f49bde0c348b1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TR0331811475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b00d4f38f03b3505d9e7f96e68be8e9d4f698fae84e9d92b1bd050097367ca7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TR0331811467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46194d593e7f3ff69efe78cece438ff80024837ced0bf007d61afd7043900ec4. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FRS182108255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca79c9562ecaac3f310f90363d94848cf3a2bb1ba4464507974a6097f227677. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRS182132822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a3226fa41d0b4a03636208c985d9ed72708d019464b8c6c8552b85e9f75f10. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:39Z), 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/FR59R2267327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a3226fa41d0b4a03636208c985d9ed72708d019464b8c6c8552b85e9f75f10. 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/FR59R2267327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96b4a2e70898510cedf3567af37b0d57fd966376d654bbff58aef3139f40502. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:15:32Z), 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/QZK6L2279678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96b4a2e70898510cedf3567af37b0d57fd966376d654bbff58aef3139f40502. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:27:22Z), 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/QZK6L2279678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8a8b566fe5d45bf630c3fc59af1799fd31758c8d9cedd527ac486427b7b92a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ62364288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d2efc44a644ab28ad54940f3103a00f23a3603da8cebdc6101501449be881a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZFZ62364289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443432df7cdc525a07f704016eb3a8b20bfce097eb7dc34fdb107e73dc99132f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZFZ62364290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8a8b566fe5d45bf630c3fc59af1799fd31758c8d9cedd527ac486427b7b92a. 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/QZFZ62364288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d2efc44a644ab28ad54940f3103a00f23a3603da8cebdc6101501449be881a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:59:23Z), 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/QZFZ62364289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5d2996dc91a1699a95574e9b8b0d199675187b1b38cff434ec1a968c1a7977. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6P2306654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5d2996dc91a1699a95574e9b8b0d199675187b1b38cff434ec1a968c1a7977. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZK6P2306654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a464a6385c027a2803b6230791adfc53ed0bcc4ba64b22c4caffc30c4875c8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWV2361457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a464a6385c027a2803b6230791adfc53ed0bcc4ba64b22c4caffc30c4875c8. 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/QZNWV2361457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d43cc4881c87bd7e8a77770196e97601441a9e06239a0041f45d9a1e137eb3f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTB92365078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d43cc4881c87bd7e8a77770196e97601441a9e06239a0041f45d9a1e137eb3f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTB92365078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038d123546a5d14283432ece6cd99cf4287d5fa8ab83cb733afdc49b0601388f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TRBDY2463904.