thumb|The mysteriously derelict schooner Carroll A. Deering, as seen from the Cape Lookout lightship on 28 January 1921 A ghost ship, also known as a phantom ship, is a vessel with no living crew aboa
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 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 0x975cd62314cb9b59df67bee86226ecd92332dfe8482baa50a88c198f394c81d8. 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/68fd0474-d856-4b3b-9e7d-a4841722f502.json and https://artists.proofprofile.net/proofs/artist/68fd0474-d856-4b3b-9e7d-a4841722f502.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 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 0x33997c61b2613d96d5534b9ebb88e670f2597fcff225c7bf84e4fb92ec0c4882. 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/QMVP91100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7f1751c2c3e70deb2c0c0d692435be6721061bd851420ff42efb70c880f49f. 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/QMVP91300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd58250aa07b1281a31d2451f49fec0a28d1149b1b6f91d2fc6e9f2d89c9716. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/QMGVJ1500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674907eb556348658dc586362e7c792ef70cfbea0402f281d28bd1f66c08e385. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QMGVJ1500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6aa8e6ca5dec30ad6ef94179fa2a0bd07f7b04d524b43e6f92d8757c44cd2a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QMGVJ1500167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bee41adb8fa5adaa13a6287b783eab75dfd6bdcfc0c4e8561a4e52ddf74acf. 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/QMGVJ1500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcd79a853e2d8f9cdcfeb7738036bcf52b8358c377feb6acffcbc51d9479849. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QMGVJ1500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb565aba2ca249ccf88c7abe8d8204768edfe55036dada958e25ea9e406cf4740. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QMGVJ1500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abd242b47b82aa03fdecc02390c31f46295b803be15515cf5ed95933b5d152b. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QMGVJ1500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132a8db0594ba15bfba02e1dd7cf799a8d6333a89972760e1c3200c5e486c238. 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/QMGVJ1500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c71311817083bea26317f3b4eff1fb97897c83e55794a83e0afb4f526f0421. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QMGVJ1500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462abb7dc6b1d7e8d86e88e14e66bfda137fb3a0544339c697347fe8c539579f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QMGVJ1500175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17583c72e796b40defb8e5d204bea81d0342804772467cc2da9742c96698c9af. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMGVJ1900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c740b446d496ee1db14bf2c04934a10c910d3c9d95b1fc0d8cad1751125f11. 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/QMGVJ1900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefab4c786ac523737778bdd0be1169fd8ff2b52a044bef385abdc133bcdddfa. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QMGVJ1900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0295729c4c288a6082a9d09adef901d1282fc8f8a629defd5fdaa86ed5baa1f. 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/QZHN62363311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc35afa124edc016726a06f5ec437a8a49381995781bcdee14a54e078c877066. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZHN82349726.