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 0xf33e37ac3046b83874d008255d722cc0e9a9680bfff44eba4119478e6c232b28. 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/416a7f0d-b21a-4f25-b472-fa90f7005baf.json and https://artists.proofprofile.net/proofs/artist/416a7f0d-b21a-4f25-b472-fa90f7005baf.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 0xc561b90e11cab47b0a431f0daa9a309b19e8228c8ba4b92b4ef2d9f290c35b02. 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/QZARB1886055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e67c3ad674c4909036b90008ac6f63e9b403df7a4c429b40c65e3cb1b533ac. 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/QZARB1886057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e607b7ce6bf105f470db8cb6df7eef37df809389abd0ca805225be9f5949f3. 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/QZARB1886058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e336c175ced863e5f36e90221616960f3405990357583cc8f1db957cd9eb56. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:19Z), 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/QZARB1886059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7e129f3898bbac75c052717b6e3af5ae418bb8785188cb0c1c17905cfe8da7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZARB1886061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6162884b5dadc6b2467dfe7e5f1699b30dc0aaf5d17d466fb9512ee7194896. 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/QZARB1886062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff96c3119de916bc564fc496234e97a005bfac95500f510fdaa78b256e781cc3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:17:34Z), 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/QZARB1886063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da7c90cb888e15e90c7ebbed9106f3acc24616caec30c4660cbbb28caabf7af. 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/QZARB1886064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7836f3669ee8c2a3c151170fe6d00806a9a54203d8d11f53a9a536df14f483. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T03:00:36Z), 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/QZARB1886065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150dd7e511eab00b201fad48933a1bcd8baa5b518bd4bab5b4cf66aa6a77b28e. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:22Z), 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/QZARB1886066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea97264b8a2bb9c195c15a56f753c71bd2880e99be97fc974c07fc8a3198c77d. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/QZARB1886067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fba91c58016c8081e354934e2d9c16d3a382b5b69ab5fc8425d71e59b5d15b8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:03:47Z), 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/QZARB1886068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf98b0aec593e19807839400104a36db298801d840e3f500610d8710cfcefa7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOK2301712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcfa471aeba1bbad8fdcf8a5b18f9f77d278ef9b168eb77c1eb9ef632175a04. 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/SEYOK2301714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445ada789012e2cb112f3fd81fa2fc1c04f0fc39e6cb1b8fac0da8cc6ff9b40e. 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/SEYOK2301715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6aa88b1ee11d5d2f62dda8bcc1c2f0d8e0917182787de18d58dfab21b4b34a. 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/SEYOK2301716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd080354f2d2bb7e4936d5cea6012d32864f6d24ddd29ad03da1496a92beb6960. 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/SEYOK2301717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541e9ccc0a7b21c58805bcf7f24097d1a3c7c765eabbeeed23a83323387456d0. 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/SEYOK2301718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81321e151aa7d6b9f473b1645f923afac309b3a12a79d1af3d300ff99115e46a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:46:22Z), 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/SEYOK2301719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91163333fc71d583d1a2e88efeb930b8ba597a27eaed92aab183101c83c57a96. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEYOK2301720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1607adfaa9dde27d1336f8c79156dfcf7d99f1f84382814ee11c29883091c3f9. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/SEYOK2301723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56d7b3bdff0f4704c4e79f950c960c579af0ee8fd2c33056907173236e4238d. 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/SEYOK2301725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e3fc14a6bb1580da5ebbdf0635e9ac680213c35531ff362e18aba58defa8ef. 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/SEYOK2301726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff526d51afc8d408cb5424aeab4ece7537f59fff1b74d2021c243c9483ce6404. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:33Z), 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/SEYOK2301727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196b425a542e75724136664aadfd61e22df4fe4157fe18c7f931d39ab73a0b5e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:24Z), 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/SEYOK2301729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0602aa65636b770130b1be6d22cb6f52451bc4b6b4f6f78199426eb711c465a. 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/SEYOK2302909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3845c253ed50f89c22dd0b15cc1fc3ab90128dc6860959ddfc609b26bc9eccc9. 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/SEYOK2302910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b94c520f9a5934c8182b5e243e2afc4d0cae6597ffa7ff1b10a83987474bfbb. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/SEYOK2302912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbc3c3d8ad020235e8f8df36de7f67593b54a8e7a299cdfbf71031d5dffe93e. 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/SEYOK2302913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd92422b6482fa98911fd65b5d568ae36240020fbf989f4b6088b5dfba948269. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:41:37Z), 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/SEYOK2302918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456e15502803137c8a249ec107f3d3ce9c53f493f674a50d5b797be6b17499b6. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/SEYOK2302919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5826612eb1abe74ec2cafcb7cecdbb29c22bba08c63b21079d9be24cefaed334. 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/SEYOK2302920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d153277c42bab0cf5d872213b79fbf77513006389438e78287f0566029cd26. 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/SEYOK2302921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75ce4c46c06a5fdb7247383aaa9864314c69de2fb721c067ad83469171bb8ac. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SEYOK2302922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ed71ab2458917467e1bea59d7c720b4a96dac56ce417aefcf7f69bfba48547. 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/SEYOK2302923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca733aff193564d1b4b882e561b5c7d438496d5faf63db595fba15e6e78367fb. 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/SEYOK2302924.