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 0x18f9f1e3bc21a0bff8d206a7e9fac7d7cc145e63e779a7fc065ef5b5916d0995. 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/5d94f2e9-06de-431b-bfba-5e433fafb6d2.json and https://artists.proofprofile.net/proofs/artist/5d94f2e9-06de-431b-bfba-5e433fafb6d2.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 0xc08d6d03b955fe263a9f45cd352df7d82118d2e69a3d39f9f3d6bc00f97beb6e. 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/GBHLW1804058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420320543155aa132b7432ca497001d1694a9e9bb68416954073b72b740154dc. 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/GBHLW1903585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6daa0da649035c45c24592e0a9828ab5cb58b38fbc0216150b136deddb5efb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBHLW1903586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64121a04067cab30de8b0ab3bde1052344a319d67c44219178ed875ed6374c02. 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/GBHLW1903587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdee1cb03fed5245d5c356f0905772f2187b42d331f7c24333303a2a5b51aff. 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/GBHLW1903588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae803f7e7e11303ee76640f50c8a6a05808377814a37e23db290640167b28e8. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/GBHLW1903589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351e2e900caa24f9f7561278b975c110e76afb5d5e3cd9d919c9740e253adac5. 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/GBHLW1903590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fed33c0f463f89a84e6b13c6f11ab1f277c2a5885c01eea56e5f26e16d5473. 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/GBHLW1903591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288dff84d90443c195d7e00e2a53fd068f1131a0ca809d77516e553b4eaabdf9. 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/GBHLW2101477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5468024928b3831268b99a8fc5608d04ac46c9a38ef71f9328c1e23982244a07. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/GBHLW2401389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89715651a1982e2541fcb6c5515e85cfcee5d12de145c23cf0af8fc95f1f37bd. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/GBHLW2401390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71861e60450644775b47bc076a1b87f10013451bb11dd69c7f186a0213b23e1f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GBHLW2401391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae750c9898eb56489f5768e0a407be127154c66b6050923d864486416a8a0912. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBHLW2401392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e209c04d7cc4badee29b6ced38dba4e9517023a31404ce1ef75b6e8ec09a17. 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/GBHLW2401393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab253238256ae2853d37446aece379ee5b5a158bb9686eac7d7d9d37037aa23. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:35:53Z), 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/GBHLW2401394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcd031e5c524d5ce686548ed68663907e4700d1345a2207b97c202103bef9cc. 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/GBHLW2401395.