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 0xcdb72f8f5d881309b35dd4b4cad548868cbe3f49cda462f16dc88bc9c8700659. 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/3a2bff24-6254-48a0-b741-9022ed9afab6.json and https://artists.proofprofile.net/proofs/artist/3a2bff24-6254-48a0-b741-9022ed9afab6.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 0x34bd43a309ed0f7c86bdc29624975250dd57cd52d9fd0ae12e34daddb4f11b8a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX282373903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc47cff3524166af29f0a37f12aaead6ccb005c42276c51e57f05c4aa305d538. 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/FRX282373905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae251ff64f3a82143fd719beaaffb93016a03c0ea36dcd25761bd3a87815cda7. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/FRX282373906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96c6eb9b47289bb4475d67cc00ebccaa42df10d4ef0a52b2b0fdfb174d16134. 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/FRX282373908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d3bf581a19ee386a9daca82d9a02e8b709fb12714ebf77e457c0f4e2597446. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX282373910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc486537eb2e6d0c81b98b8b799c1d8fa4e9665dc331c7a83a7d13379781eea62. 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/FRX282373911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e2da5e48934d5f328ab965f31305d2fdb8a909381633de66d564e766283b8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX282373912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce6fc4422ef9f8858d5730cba46519379f6fb5025a6c6573393dcac829e34c3. 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/DGA0S2427394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a9b509c0e41d70eb28fc8de0b9af1e0991d7e1ff50a549e11ef2d8dada168e. 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/FR10S2522479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a9b509c0e41d70eb28fc8de0b9af1e0991d7e1ff50a549e11ef2d8dada168e. 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/FR10S2522479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3602a5cd9fa19db08e9992a00bddb3ddbae3f801e233f37387d0315c22a328ad. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR10S2522480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8212e00a163d1d843376ffbda6ece28e2a8d6b545d889ab50af43197617d893. 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/FR10S2522481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e544d00a7e6bbc3d5d7383ec5a7bcb15dd60eedd4d444abb7ff3fc49f48628. 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/FR10S2522482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3bccfbcaa7e9ae9deb3c0ca53cf468e42973bbe6bd829e40381b5c00f69972. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR10S2522483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e22ec0a5712a1852294d68dcbd57ba4f88b6496f29fa919fad12e60cf4667c7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:59:08Z), 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/FR10S2522484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71e63c723f2b2e91b341f0b475e7f1664aa51b5361d757867cdcfad4c1d2de. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/FR10S2522486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd599c15919624af212c89dd3ca32ae8e3965b990d792d65c2f3b75e7c5f497a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S2522487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624289b8a13e270d784b26a7ca1c3ac64d0996114b37ca0b0354437db179f6c3. 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/FR10S2522488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b8141a57ae79f06c0a55b30cfc7488c2ad874809b545b4f4a0d8fb187fa783. 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/FR10S2522489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe046d4a4fc4581a0a135ca7650085915909e38307ead4b9ec183133f8eae699f. 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/DGA0L2458806.