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 0x7d971aad68bf89e66533cf26b966e67c11b4666bf9d1481e9b902513f9fa7f56. 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/cbb3fa60-847b-46f0-9ef9-ff45d2809bba.json and https://artists.proofprofile.net/proofs/artist/cbb3fa60-847b-46f0-9ef9-ff45d2809bba.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 0x47f62419baef554f19fe0eb8fcaca8c64c604784414e47b6ab5f6e5f56969b30. 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/QZES52262625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbc6b677b9828aed7c4dc728aa0b8de983f3e4386a8d15f0daf512b92c92140. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:36Z), 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/QZES52262626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ca27fc15edca8310a0c6e3f2ebbef7dee052ec1576f8fc408d7b28691164d6. 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/QZES52262627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4853ac2a88144baf1af9966826b6e56c7ffc4907e330381bfcca95dcc987984e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:32Z), 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/QZES52262628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef52e8cbf7c79456b63ecd1878bd2355d5de29d4d080db9e8cd673ed49d2fae3. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZES52262629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d31fe544f7010bdead907c26cd7fe9e8708d53b85a8f8a0283751f190a5412f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES52262630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b01eefb6e1bbde13ee9c74b30c6c6906c070299f3debdfe55cbfae1c2f1148. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:53Z), 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/QZES52262631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e824439693cd1e85b0b64c83257211f57c6eef22dd67434e5ff34077362f077. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZES52262632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c17b4dae97782ad0dfc7b32584200d8805e989e730addcabd624629af8a6113. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZES52262633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffa94a0329cff339a91ec739311ba796b8596083828aa09d93d67461db69ec8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:49:48Z), 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/QZES52262634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bea9d19084fddfaa2f2311288da218837c8a1cc0d157fbbe4fc2b1bdc27682. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZES52262635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faf96c53bcf9f6b04059442311ea1211b403d9d9f19aea4c5f8eff9124937fc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES52262637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d619717bc9b9375ae15dfa3e0b520ba8e21da2816092c9f0c8aa99ab184e0e6. 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/QZES52262638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c085f6f52cfdf8b8d479a7d6d88d171653e22b5ea8f93e2612c912b905322f. 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/QZES52262639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1e7c7bcdb5c97f3e60dba7344ed9d14258c6fd4976272e370b49da2ad09f62. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:50:02Z), 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/QZES52262640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c2b154b98a9fac24255f13447753a54e1f0c0a0f3801e1ed18998221c85271. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:11:04Z), 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/QZES52262641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627b494dbb0894b667cc13dd4153b47abd85956278267c4ea03e6f444ed9197b. 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/QZES52262642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e16e418d28eafa9b021b16a95267e26c6e6d6c6999270d7f6e52f6864d2426. 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/QZTAY2425086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e16e418d28eafa9b021b16a95267e26c6e6d6c6999270d7f6e52f6864d2426. 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/QZTAY2425086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd225a1f43a72a8ba0b030d34ac5a6f1b09357baf57d7dd4b82f68a646293e6d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:25:45Z), 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/QZTB22447930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84850996c48d632b18cc3aaa75a363542f484f5081bb2bac6f5d059eb42bc8fa. 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/QZTB22447931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9b512ca2aaaa28ddf91daedab1a582229beee53121b5c51bcd797d761e253f. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:10:08Z), 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/QZTB22447932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf505c614368a26e05e847c80866b32df4e6bbbc016cf47c81fb75d4fe925eb7a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:48Z), 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/QZTB22447933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1869992aa8842100ae848b221c1d1a7cda4ef462295b2afa552e5c058c1c79. 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/QZTB22447934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13f72bc2acd84b6152f7e45a573add9a7599c57a254863059ff71dee50b4067. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTB22447935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e2da7b3cbf63fbe38c616a4b67d03662a0830b0456f8f9a937c7bf107443c1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZTB22447936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151a3a866e894669f6a39170a773a7a0c7f3f281723ed21b0794daa4289981f3. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZTB22447937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd8973378e9a341448be4c8c3d53668c2ebe4ffaead78cc0a9fb1ca5ba50aa8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB22447938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3639bc68fa4e3896792fe36e6ecae16f074ff3f4b40a95604cadb1f5482ee36. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB22447939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e9075c29dd8808806beb4af3c91217339fa47c789b440ed0ad212afe9de760. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:59:11Z), 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/QZTB22447940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3f4e67c8a244bd38700a4ad8e5a3420513102c7da1a9710e6c14e4ce79446e. 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/QZTB22447941.