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 0xdc504edebbf2486e8638ddf74c2bbd68d858c728c303c1ade368b9c59859cdff. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af35854d-636e-441f-bb23-1b808c634f68.json and https://artists.proofprofile.net/proofs/artist/af35854d-636e-441f-bb23-1b808c634f68.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 0x3385fd46a731fc8772b81d9c5d90134ecf2d6490339e9686e55a113583a76fa0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2330483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd9076b75e4492d9ec75091ce53841830f560c4e127bd59ee3a2cca01ac2d5d. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/CA5KR2330490.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30dd3a6a669a19d4b86b1e7d9e18b5cb162474462acb053a5c1fd4a5a692bb0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2268280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1c1e163e389ae5e2e4b6bd3cd90f4524b77fbbac2443f487a85505b62d50f0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2268282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9930ca142af79c7f7be23d726a18006b412d2efc966e90d143b9b09a839c203c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2268285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca309df98ce1c097d087d351e713275ba8cb06caf2d397934e0d43b11525ccb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2268286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b22cdd54ffba8e2932e46386e9e315b521907f9cd95b556b16245ca015bf4f8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2268288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7581270989bfeea6bc65445cbec4c2912aee15e111c2f8c1f0fce3f8587a5bbe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2268290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623df5994e647188b0c603710a9a189e5c320972747f10c101e5bf9cdcb6dc0f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2268291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587858afafb55fb985cf2426e885a18b29456920d4c7df9075f34c23bbf05aab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2268292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfd2b1ea9c982237f7a61f4d066189722c58bc7ed71bb9ec4ca2b12a7df41c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2268295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b1038e762b77da39d1241d31bbb2e463f482d28ccdc675282d91c241679c2c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2268296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3fa73300dac6384f052a09cf56ec425eb8f66cf7e96bcfea474950c9158481. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2268300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bcfe30399c91254e408d717b7868790790da5b8d18709b66de6c7da6358733. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2268302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b26cb098f77b8008d3938cb083ccb2de5bdf800dbe366484034395d7e1e387. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/CA5KR2268279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2ea429efb70bb4511faab16da46e4d6c14e3d102d4acca314406ac49a21d4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CA5KR2268281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a831b76755e705751aee64337be7faa6dc85559ad63fb253d8b3789ec21216. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CA5KR2268283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ccd2eaf61c5b92885f68dad7dd7286e46c7448d253491511a62317cf76b34. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CA5KR2268284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57a62ea52a9b24a4921a997e275d087ddd5b690d95da3b8eb544a775d328850. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/CA5KR2268287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063661d9c7a592640deb04f9d7468c6a3d0edd5809362b010ac69e5bc20ceb65. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CA5KR2268289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cd92a5d1ab8abbb59a51cbba589331672800064aff070ff1c86187ec19db67. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CA5KR2268293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf575ba1db21c0ce476ce77dd465a31e6f315e44dc06ded17aeb6d75dca2554f2. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CA5KR2268294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84057faa3fab8f01b66778ab2bf0d6650c819074b94fd494fbe88ee4afdc41e. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/CA5KR2268297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fcf5935d88695833f1420a678d193ffc3344a7ceed30404ac0e4e5482bdafb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CA5KR2268298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80325447e2e7027f50b67106a9c879ce1283442c79c5041f0e261c77236a4b8b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CA5KR2268299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ea2872604d9f0ea8467b868c59cfc21c2c5c93eef1bc8f3b74abc0585311cd. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CA5KR2268301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadad81e90dd372d24d47bcb42a8129a484a5aff804143d9e48ac23d2c6b4a36b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CA5KR2268303.
Sonidos de Lluvia y las Olas del Mar, Pt. 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4e5f1b1eebd4631232b9fc155414759c7132a61ed2c659143d31893395b7fc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2257604.
Sonidos de Lluvia y las Olas del Mar, Pt. 43
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ecd2fbbd4b5161ffddd5482a75ae8f29acc2588531ba427b4cb943fd575ab6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2257645.
Sonidos de Lluvia y las Olas del Mar, Pt. 45
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a526e48b5bf665c2fe0c8958c76e65686e387343701c29caada84bda6beac62. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CA5KR2257647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd242d2ad5a6014f73e7a410ed130f530099a1a2ac00b379e2f80e8f85755b839. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2241045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4bc40011a66b0dc12aafe0ebe01a8b9f251ffdb18db1bb2a83db0653aefd67. 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/CA5KR2241052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832a71e4f031cadd3bb6cb2d64454e482dda958f2d1dbf5e6473141a2dd9e4b9. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CA5KR2241044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3e9005674e94705f6b7574aebe995771165e1475431157ceac86b57dbe681. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CA5KR2241046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4490c4719e4050e5b32cd971789f870616674b01db32e1e2e90fae40b9f0fcd. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CA5KR2241064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed72d53e5c2dff1a5926df6dc52a45f56235bc2c11107a34efd03104e1dcc3c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CA5KR2241074.