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 0xf4eff941bde612176fb49628b27be5e56274057702d82d37b3c330073f177b3f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e441124-8fa3-4080-8829-2f49979c1683.json and https://artists.proofprofile.net/proofs/artist/0e441124-8fa3-4080-8829-2f49979c1683.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 0x41a93c9cbff9cc887a73c94427c693f0d9dd38391a38113e05d0f52eddb7f671. 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/GBWUL2186809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0cb55840a614707d02e945d663b6b1c4db71427da0ec68e61c956b09be11dc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBRKQ2269178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af12ab41a937e25dec481a6f29dd8b8e3458e01451f3bd680e904d73faaf768. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLC732300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3207a27b75fd6d35722aa6948cbb29f2808f668021e61ee9060ec5092ccdaac. 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/QZWDD2308924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0106187136f0293750e8e89bab05514af748b2cb4c3e906a0d9a7458428d177. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/GBLV62317988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcaf24bc0294090213182d2a26ebfbf62c638a4fa352eda31a7a3a9f2d4d1d4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBKQU2405599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cc21525e869e8b0020f0f0f1d6c7d081214dab286d6da84e529e7541fc23e7. 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/NLC732400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9201f8e6d004bb5975e3ef4e21d2dda79d46699948663573495f63e71c2b163e. 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/GBKQU2482779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc745012eaa05c4a7801ccfa48a362cc82a9abd8df90cfe01ed81712370a9b18a. 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/GBKQU2482780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877f8d40343e8f8817dc7ff1389387ed1245c622b11137ce7dce493b7332d835. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:59Z), 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/GBLV62402069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaa5b3cb3d4793d285974f518c1decbbf8f8a597ac075b997ee1a0a104d6fb9. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBLV62412408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17ab90370bf09c807e8458076a3ae05ff2327fbd0fca838fea39c49655b05fc. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBKQU2517466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07634411fc5e02faa31ba1da478e46409371266f1a241b30329a096abfde15bc. 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/GBKQU2551421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d6326e7e39cd5d7dbe9cb7968edd18b4f33e9740e02eb404e6330379834190. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBKQU2561277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec42724d454a251727db54ad9bc2f88aabdebb76b57da0b8713409b8622111d3. 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/NL9KR2532182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acc51a4184c6fdf20de0c7888ee404d339269af0aaf9befd60bdf026866ffe9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEL672500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c50d9bc4399137dc65f36939c689e450bedbabe721d48a55cf09be3a47c8c09. 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/DEL672500011.