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 0x30a0f9f7a097f4d89818aba9706fc76a9a1ad0cc29ebc3fa0d5adf611df464c7. 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/9a84cd9a-e2b3-4061-bedc-597e4e32e4ce.json and https://artists.proofprofile.net/proofs/artist/9a84cd9a-e2b3-4061-bedc-597e4e32e4ce.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 0x4738e8608987aa36a6c6f89901a1aae215cc4dd6250a920d5a5ca851622a2372. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/SE6XW2259731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfc7885245542d519957513556d7940f2cd75293ebe403fec906b3dc69f6795. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE6XW2326022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5beed7821c1664a62a868a54e802b0eeff5fbf6363c030532e19805b91254997. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/SE6SA2314310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d78b09e93862558e6efac97af8443775fba5e3fa0467aaa64fd1e0172efce6. 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/SE6XW2395677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c074db7c735f2df219661843c77b7da1dac6649c5d452f93b26bae59d9b02e. 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/SE6XW2331074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2175aaf384abe818e208322aca3e767590dfd39da8d2e564c4e4b3214d3c287. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/SE6XW2363729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba769e3ce88d19204db39bbc2d899f3e4a886e8631afcde6b3fa6ccfb2ec434. 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/SE6XY2305710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cdf7ed244d747d8c21bfae05c7de8de45052232e79956b2ccc18143fea9674. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/SE6XX2378121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c4fbfa9bfb6462b8d600a318317523344e82467bd780bf8bfecd33a7957b52. 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/SE6XX2319176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1daf9fdf166172fb2de2a4dd4f31a60338fc99f70c0a6d98b8372ecaa71a0e. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SE5BU2449351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606cd0b676465374064395a7df1355c43e6f387d69a00d4d38bae50a8151cdb8. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/SE5752457861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9649e03cd305c664ee4514860aaf9074456925467b12b9bd6c92614a9f45945c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE6HN2414168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c1168ad98bbc9e75cb2932e2cfdcbe1d384dd4836f25c97ab1dc07cfda26c8. 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/SE6HN2481542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed6cff1bf937000bd70acba5a6b020e749e0dcc2dd885dcd08c217e0af1dd61. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6I32418507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db516b9ad2e7e82c98e89c28ab98f9ae952876dbcf1aacf233e788fa4dcf949. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/SE6I32471245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa420d2b4bb3f0ba661aaf4df6252934dad50c1c16d856806261c338ed95ed906. 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/SE6SA2411980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1807ea067d77106bcb658047e551b3e14ef7eb11915759bd686d1830ae38c417. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/SE6SA2472853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5f6d9ecb992bf18bd53fea79c06a5945febe35cd59538f8bcee81b92a86180. 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/SE6SA2472854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e27737992a59ec391fadc1e8b97cf74914da36fc0a9cf27904924b0830c7397. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/SE6SA2472855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e642354e7e1f90a8393d3ea7bff295aac34df6f53a553067aa70151d70f6fde. 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/SE6SA2472856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de9b4a3602295bb0699004cb7bc94472b027091451e545d78c115dccb581f60. 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/SE6SA2472857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3034c81651979cde98b71a0baa4e34034fc60ae17ba82b3b207cdb91ae2207df. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE6SA2472858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc2b7fa07477d7b2f014fdb817952a4e53f9b1c6335d5a58a9d2b871faba476. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SE6SA2472859.
Moth in a Spiderweb - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d1c41e9596109104796f20c1e626881e79b28b6e03f86547c02f85e7838d43. 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/SE6SA2472860.
Ignoring the Dysphoria - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fe85435a8928f0462e4e36be1dd3fae099aceab2590824a9cf7e075915b462. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/SE6SA2472861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b0a3e45f5ecb8f36d264c1b51d67953030e29cfe98c5ab417e9d588b0710ae. 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/SE6SA2472862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464c79cd3c921ad4a9d4978cfb880d3cf0fe63a74b5d2366795677fae691534a. 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/SE5BU2582999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b261a5030df4b63053b8bded6d8940f5acb1cd7c8e0d1ede53fd582f469ae94. 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/SE6XX2501910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226684dcb127d7d7220fd8c147c61b75510a0d63a732053756ec6894360d760c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE6I32513927.