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 0x55a544705034b4de96834103799ee6b50fbaf41f063c99745a02049ca845a861. 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/07035cdb-f027-47f9-9bb8-03540727d01b.json and https://artists.proofprofile.net/proofs/artist/07035cdb-f027-47f9-9bb8-03540727d01b.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 0x104b1c4aa136f246994f22a3c5c9cd4321ccb7207c846603bf93743b5ac25afd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5752250435.
if my bedroom walls could tell our stories
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba812e4dad53c4d81a5aba1bd9137cf06668f2ca3a6ced8d2b3800b5bf0f22d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZJRC2283231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9058be2b6d5e8db0ad13b58b067b9501ab610826ee71280e9cad12f16d78dd9. 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/SE6XW2337624.
miserable together (2023 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71252f4c773409fc043d57c686b48b7db0ba86d6402d86bcf69a75b791e105c4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/SE6SA2347026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9058be2b6d5e8db0ad13b58b067b9501ab610826ee71280e9cad12f16d78dd9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6XW2337624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9124abc4c3854db849b5d0e45a7e4db6b8ef69fc587a53160c855dd55c12b84. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6XY2194003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa19dbb2cf30e883a4f0f3e0ccfc2ed9b429d1a195feffafb8abe3249ca37fcb. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZJRB2245216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb738307a589ff29e327851f60a795980508e5ab663d2538cb59ce8f15413a1. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/SE6XY2334797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9260055296c3e80b7003d502ba686f63b2ce10ae744c57b03d8c894521e0d0f6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE6TI2380722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc7047bef7ff36d91db81908d71f5ddbb5eaef538a3ecb6056cfeea6c7af789. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SE6TI2390296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cd9ea5d0d2330015cbfed08c323a39e87aa3a7619cdb0e29f812939f4dad53. Chain 2 (Bitcoin): anchored in block 956960 (2026-07-06T23:19:16Z), 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/SE6XW2383072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb4683d1bced614fbbda5c2a18843495f58c98e7ba3e4c1cac74119d812f2e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6SA2386781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e65bd90095bb39cf082d7506ad95ebbc64e371305dcae09e1d6f76dfc606146. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/SE6TI2303002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba812e4dad53c4d81a5aba1bd9137cf06668f2ca3a6ced8d2b3800b5bf0f22d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZJRC2283231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7988efac9ece44c9b385358b254c0574f31a4ddaece50ff0c27cc159909c6df. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6TI2309272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24e2f9981bf0cd50855a54756ed362e58b3c819d784c4c53e7802fff40b3ade. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SE62M2380355.
ghost girl, Pt. 2 (it's too late to save us)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6176c4b5a7b7b981713561bfb45df62660cfe8719acddfdf24e56d38f62f57f. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/SE6HN2474173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47721463832e6d8ac3d152ce65bdb88b1b64f0a4792767f238cdcc5f0eb2ed9a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/SE6HN2479288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa80ba559b2f19c0b8a7b26f0d979e9f4f64df2c4b94629c12f2ddb7e9cb7d4f. 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/USANG2408281.
high speed cargo train to the middle of nowhere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb132609ed27f1ec86ed2b66e2c952b669172f4111355d1efea557bf7c9fb09. 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/US3DF2500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9243ee9292f96769845e932b3ea5cf452df2b3fa3b716cb0426cf73037fac494. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/SE5BU2585464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fe4cee31756c7590d6ef526caae44d0d82c53a3638f7e377c846b0f28e58bb. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZTBC2512928.
Watching the Stars on the Roof of Your Car
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad30c4268e8740179549e925b09bc48033a2ec8eb7e81ff9ce9bd9f66d936bc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTBC2512929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0528ad4b0ca01299bd9d031297297a585892a2c88d9606d5fe1081eec7238fcd. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZWFF2579107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696ba419bc6743d14ce9821d95b781be254ec676f0de20dbe9ac0a301d7e819b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZVEM2333200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696ba419bc6743d14ce9821d95b781be254ec676f0de20dbe9ac0a301d7e819b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZVEM2333200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7201d679eeaa9d63e4ec9b5e69c34a2fb84c48c9a715c675b09b88eba250167. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKZGC2401057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb4683d1bced614fbbda5c2a18843495f58c98e7ba3e4c1cac74119d812f2e9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6SA2386781.