thumb|"Amine Discovered with the Goule", from the story of Sidi Nouman in the One Thousand and One Nights In folklore, a ghoul (from , ) is a demon-like being or monstrous humanoid, often associated w
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 0xd963045dfa4c3beb1978c66c0869316676a3ce13b7a406013db06e31b2b465a1. 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/360ae3cc-dde3-4f79-b0a6-4c25e825c490.json and https://artists.proofprofile.net/proofs/artist/360ae3cc-dde3-4f79-b0a6-4c25e825c490.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 0xa4786ce6c2ebb3850652835c95ede2572e210a897641f0af31b0ef3fff2de7b9. 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/QM6P41522517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6880e6e9181975e32f24054146e45c64627dcd6139b5d12f0a691030e9081ec1. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QM6P41522518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fff9361b13a73ffb27877fd9c17bcad17078009834f3efdc097af83ebeda1c. 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/QM6P41522519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fb9a1bdd6309b8a808866b102754c6db29022c4d159edd4af584d60dc0aae2. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QM6P41522520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c64f8f7b323ff2dd4330d046f2156612919a0789eb8643f761494d56062b750. 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/QM6P41522521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa08c828ebbb2870e1820701a5199126733b6707cf10e5162a0f99bbcf8c8a72. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QM6P41522525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182d1a0e82d3a04a520fec7110afa274bcb7a9e94c2a81e14e7f267e72693f5e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QM6P41522501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc78cdf5f64660a9e1bb272b515e03c249ea1801c57d6f635556439a43cebe9. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QM6P41522503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c723ef113e60e389207b6476fce168831706b32ba2ce22f666f2d3b5a96672b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QM6P41522505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b3afa031cc8413fd881c1995ee37d03d264ce5294c96d460cea005a8d4d88b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QM6P41522508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd05b88b7a27d9f2050d0d6ce49b4580b530cbbd33d0f1b204a5cb5aaeb85564. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QM6P41540937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0f9876e9c3acf677bfbf80dc43110da3034ec82c60c45ce0b211537f724db6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM6P41540939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccae3a2cadf1dbd19697d1d9aa2c021f2019003867174a361d2fedf51ab8d2b9. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM6P41540940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2e86d6fc0c615941550c1432fe344be98b2617856c1a6863bd80f22fd95686. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QM6P41540941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791c01158381f1c6457b90d5ef34a15807a87033242e287053e35be85bad050. 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/QM6P41540942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b2522cce4508445cd4ed8cd5cfd30a808178ea5197d5758eb21e9b7e512511. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QM6P41540943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bd8fc0a531a4e43ecdc59a215e0509ca2931faa23d70786e92ffabf791da46. 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/QM6P41540944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7714c02bd3b4f3d3084d0d4c4c59b60ae161ec457d675afc25444a5e4cbddc9d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM6P41540946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88792f015b24d37a3de73ac84d566934e85a8a3868a9cfe639d37fe44d538459. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM6P41540947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2815bf6f578db7b1f19d287b191f4b7de6ac0d7beada0ab749b9eb323ed4cf8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QM6P41532145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24f372f8b3fc3bbd39b72a08190a0b5f657d4b2ea7e9a7dfcd99971ceb79820. 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/QM6P41532147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc421dca7ad0ffad3603b537f8d2591ac6d02b73daa28a66a2f31ad532d04b5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM6P41532148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64d1e29e8c076a4aa48358e14236dda3dfe07519e933fb889d604c8bd1c207f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QM6P41532149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34a6d8dc86c5ec73ad88d320b24d1a9b4e1785cfe665318add0de09ae063ca1. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QM6P41532150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218816a17956cce6cc341fd2ed282b678f467a89be11f302c80bb0a03a3bdd67. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QM6P41532151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152e5e6893dd5caf1685a29364d13230fe53a23df8c8b298e27aa9c6d33a3431. 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/QM6P41532155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44bc7317c06a9f886d600e3b40a43c59d8ace8b96c5c069b535ca35795406dd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6P41522466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f6d66fe063dddc8270f70dcf8b43f23b2260a10ed4554067d56a99cf875f44. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QM6P41522467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f84ad59e3d6b673eae2885d28a299d53e3dc2bcb2f66a74ead971f6fd80151d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMFME1578472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e20ada22a5486178c9a4fabc03934ae734b6722ced05ec22693b515f1aaf5d5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMFME1578474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fa983488b7ab0e3d49a6341678443aa627e1a44679c42bbf332505a72b212a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QMFME1578478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19de33e2cb429b19b674d47a0251c60fd21ea948c0c881074aac307516d2c76. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QMFME1578479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcbf6f50930d84812ac650bcdd80c020c6d6289e27a4e08862e416aff1c60c8. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QMFME1578480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c236f839398ced67fc48c70dfb613d693b2aae3b5fd728d6a2de591fad9f8f. 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/QM7282030927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c66bfc7123e00b7a04b53f8d0611e546ef422213b3015e41e7b694ce6af19ed. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QMFMF2384577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b71ea559bd17befabf7faac7cdc46efa466fa9b256aa8bbfd189090a03b4f1. 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/QMFMF2384578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb4831f1c9bcc2be9614c40ead81fd038d79074982c23db610fe257d46bf6e2. 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/QMFMF2384576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c66bfc7123e00b7a04b53f8d0611e546ef422213b3015e41e7b694ce6af19ed. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QMFMF2384577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637d807d7898c488957b09e36bfc93783e5d14a94e5cf1ca95e8f258c8d89aac. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QMFMF2384579.