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 0xde981134178aa1573756490efc136c01e80c3422c03f393b00f761576c74cf67. 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/6f3d8cba-5b98-40fd-840c-1043f4931047.json and https://artists.proofprofile.net/proofs/artist/6f3d8cba-5b98-40fd-840c-1043f4931047.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ENDER LILIES: Quietus of the Knights Original Soundtrack
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 0xc346b83719fa3a847cfe62f226849f358f40902b771a4f68e3d56e835b498126. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/TCJPO2182142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d761a893447bd37354bd061176ffa2e8e7271f3bfa52b28d8d58fcbdcc4d6e0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPO2182145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6c7fcfdd443aebcc079281f0516311dbd6e8d8f7811859ff0c0b778b30aee0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPO2182147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874888be62cec4c79c10689491ed8976d749db0282fd4843fd5b8fee4d1feefa. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/TCJPO2182148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bee2a3e0f37d06b5007847fab6dc883ec6a03e50024c805319f7d0e24d8bb9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCJPO2182150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25541800f7e46a3ef66c1ac1f6623636b4c0b13eddbdf193f1a66553074459b1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPO2182158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e035dda4df7b56469831274c5e7b265b92049dde1d05019ffe9fe508cf70515. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCJPO2182159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf977e6a75c72ffe0991775a4b5e773197a5121942c10af9e44918f0a88f936d. 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/TCJPO2182162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fc1b52b0705b8073c41a71952c3d056c4b000ceeb410da39d33a18ba1a2302. 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/TCJPO2182165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e237e7ff5291b0071df5ac86aaf2c2c5f22d2e9616b565a5e7f9bcaca4e2c98. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/TCJPO2182167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7560b99f11e8a76b5123cf227bcc6c7101c3067d6283cf778d3ec09a046d619f. 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/TCJPO2182171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe539e3f2465f7d75646d64c48fb663a9c5d736e587c7d467e98e3dd05f7740df. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCJPO2182172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89ad281c86615177fc259c6fe96d045bdb782a2dc98fe270d12c8fec83622b7. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCJPO2182173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0d57434d99b943641f952c5a3740d2f133f199f12da787d0021a603c403436. 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/TCJPO2182175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36092128c7be0f631d8f00806414c1a2e586243741dbccd49ea2383a48bfe965. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCJPO2182178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2809a86858cd01ed2f1756d4fde5f4650e32b7199642d840aeab804cb763e9. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCJPO2182212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4749e076f8b951a4067391c9cb532b7c9633b0828189b0a1f7421d47488db9ce. 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/TCJPO2182213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d1a2a387bfd5ed0f50620576ebf97e54b082a5c68c6de0eb63acbf523abf50. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/TCJPO2182214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1357c0b2daee5968a5c54802e4d7e7d66d73c736f27e8331678a840eb3062607. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCJPO2182215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df1b5dcddfa8656552a55b90c68894bbfe6a403f1988f00717c190c5169715e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCJPO2182219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3125137c2c0a11384d25800331504e5fb5469d70490b5b99faf097ca3f23fed. 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/TCJPO2182220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5711b696f6b1922ed225d8b377314ca8309a0e6ba776f893fb892db8b313db13. 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/TCJPO2182222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b77840107c587dafa7134deeee14b21173ef8d3a892bc5a40ca197370647297. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCJPO2182223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddb280cca4804884ae3d69ef0a994617830feaa7c8b434726e74bbd9530c205. 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/TCJPO2182225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f913e89178aa37787b0b36ebc2a3926f4f9066eefd0ff3da8a651f1a805ddf2. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCJPO2182226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fcf2f338495a19ca6c0a1db30fb130bcef66b810b9f618f83e063c66e1c653. 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/TCJPO2182227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd89a8a0f705ae7bf75458bade14464e7309aebfd5e7a1f5e9a564a95bbba1d1. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCJPO2182229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19672b87256d6c387e26934d993a8fed2653c20afe66d19fc847a68cd2574103. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCJPO2182232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bcb19fbc35fce1495f4f49faff5a25105dc1e187156afa080321727429fb8d. 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/TCJPO2182233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4faf9cd861b824a61d632510e470f3b25af330686170ab9133abda8309fade6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPO2182236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9783c4974980c42cd8d4659c8c4fdae7444df3b04d2522246afb07b5ad6501e8. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCJPO2182237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e68e3b066e67cac9402b48472190bcd27005c62d1b3a18fbeb844a94edcf699. 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/TCJPO2182273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9429f8b2c0388314b9352deee0df7c17622786558ab15eb3bfb7f1f9297ced. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/TCJPO2182275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb050bdf824ab9a6dfe23bbd2ca8a26e90d89dfc2537f431b0ce5bbdb33b7912b. 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/TCJPO2182276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bd3479ecc0109981d3108f7e041d1a6b816442a41d90f03fd44184df8478ba. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCJPO2182278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7e477f94be3c2777b8cdf555ea43999c6bb56526d159b4de3bb5ba50626450. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/TCJPO2182280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7066c7a8d11d3880bed3c248c84cd274448389f49b46b13eb515b01454720f5b. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/TCJPO2182288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7242c715b01d95fa3dc750007df1f34399a792cf88e6c50c3625df693bf9a1d. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCJPO2182291.