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 0x6455ffad99543e0ac05d2bc86ea16293683136795bbc75b9da577c95fb10bea0. 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/351f05ff-0876-4e97-a5b0-f239e8673905.json and https://artists.proofprofile.net/proofs/artist/351f05ff-0876-4e97-a5b0-f239e8673905.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 0x7c2f5ea96d87d927527799624934c3819b9b1f65444e292b187f0cc040541965. 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/USX9P1232137.
A Night With Frank Sinatra Two Tabs of Mescaline and a French Tranny
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ea62a7976c68bce511eade9aa422e0c3f05ce3612d7b52f624fe9ba6489268. 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/USX9P1232139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a75db20f5f6de4896e51b97810c197354f3e39df421a6c16af48cf4a94191a. 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/USX9P1232140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8b57d55d42c083bac15ef6fc908b1eca4c8398e612a875c1f02c3557ea41e3. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USX9P1232141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea241372db77947abbde58a471bd1949a58236f9f3af3acb885fe22c5f0d5120. 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/USX9P1232142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d6c9518d8d077a2866fc09eac7a8c896bac456d40445b5a3d840ac1422f114. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USX9P1232143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e6956019c7711754898d9f44bdc7145f148a735595e843ed0aa2db8a7046cd. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USX9P1232144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfe527b4d57eee8d45ee5004b9d2708097746d00442b288268e6af74ec6e2d1. 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/USX9P1232145.
The Golden Rule Is There Is No Golden Rule
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fad2811820abf6cb2e1c4ea46a901bc90983814f73f15bd74d18c948a21d3b. 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/USX9P1232146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37b78cd256bb0cc29d05a9e257b3de5f178a728ba61808483ed4cecb0447c1d. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/USX9P1232147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54f0e48748cd0e7806a7791d599829ba83fcc7b9976a854fa9874ba4ecbeaad. 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/USX9P1232148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d58af025f297cbe4603282e7b61a928be2f0284232be21b22b4ea7aee5a216. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USCGJ1504106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b49e26cf60de34fbb2569fdd338970cdccd8d8b6a7afa1de546de7638c806d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/USCGJ1504107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac856c492469a2267985f67e0a8d821adc10666e3a268ac3c900411e3dd7820. 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/USCGJ1504108.
The Great Deception of Marquis Marchosias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3ced28c7dd8ce204e7bd93ed0878dcf62909d21849d4a1d50a9c174f1be316. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/USCGJ1504110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8657fa2c029eface6285fb41c3d44a7d76b1be32b433578cf066f6865ecc8b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USCGJ1504111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c69c57ca7f65301a852383adb3f1fb3446987da06d4e19de3aa8c5b5358392. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/USCGJ1504112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc79f7afad9dc9574e85a98e6c1855b1f7a7ff8f7d1a3593f4ec63bc87175ff. 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/USCGJ1504113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fb7b65357719a31a86f178c289d021200e3d572f383756c7d21ccbb0a19c9d. 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/USCGJ1504114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495b7c82b716a4eacde7de17acc6bc8cdb0df39cd21ebddd2045efa29ba1f37d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USCGJ1504115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297668872794ca7dce1536c14d7d2e684038cc3cea39b1e6713dde6a25843365. 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/USCGJ1504116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad28863aaaf5a8472de95fa311accdf015e170066f84517abd8118ec365668eb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USCGJ1504117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad04db7c49cf1d9616f095a8f8965e8af1456c5d5b7007db168ec14b550200c3. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USCGJ1504118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d58af025f297cbe4603282e7b61a928be2f0284232be21b22b4ea7aee5a216. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USCGJ1504106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3ced28c7dd8ce204e7bd93ed0878dcf62909d21849d4a1d50a9c174f1be316. 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/USCGJ1504110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8657fa2c029eface6285fb41c3d44a7d76b1be32b433578cf066f6865ecc8b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USCGJ1504111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c69c57ca7f65301a852383adb3f1fb3446987da06d4e19de3aa8c5b5358392. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/USCGJ1504112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc79f7afad9dc9574e85a98e6c1855b1f7a7ff8f7d1a3593f4ec63bc87175ff. 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/USCGJ1504113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fb7b65357719a31a86f178c289d021200e3d572f383756c7d21ccbb0a19c9d. 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/USCGJ1504114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495b7c82b716a4eacde7de17acc6bc8cdb0df39cd21ebddd2045efa29ba1f37d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USCGJ1504115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297668872794ca7dce1536c14d7d2e684038cc3cea39b1e6713dde6a25843365. 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/USCGJ1504116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad28863aaaf5a8472de95fa311accdf015e170066f84517abd8118ec365668eb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USCGJ1504117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841faa8d39f242e1242baf4ff64c812955b27429df7536449cb486156cd0f937. 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/QMRSZ2301673.
No Weapon Formed Shall Prosper - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8457f3269a29f89369b492409587cf8b9f92bd606a98a2e91f360c12d47885. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMRSZ2401118.
Who Of You Will Persevere? - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc07c3d117f96cf9e4c5513ca5c1f452f2f924911961a17cf518a6240b3f23ae. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QMRSZ2401119.
He Who Pulls The Strings Ties A Knot - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6be6f8a5a4c25a4a244955077f175e77674642c5baf34ebeebfea9829888b1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMRSZ2401121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f81e827d0eb4b33778f18cc6a390de311027c4f5b7d79a2b84874dc379d9a77. 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/QZZEC2311988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f81e827d0eb4b33778f18cc6a390de311027c4f5b7d79a2b84874dc379d9a77. 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/QZZEC2311988.