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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bbf2a2d35bfa7a8e531697f216be6177710cfed6af85b51111712cdadfc6cf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0109cb36-4753-4887-a691-32e9fcfe305c.json and https://artists.proofprofile.net/proofs/artist/0109cb36-4753-4887-a691-32e9fcfe305c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf881b250fa6e74e0f5ec4c931f916175d653c7cc5af16e9b43f9fb20294f95. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX38U2385790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13258443a53602a096c99ab08cf1280e196e5d32d6bb1fcf2bc31373b74a7878. 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/GX8LD2254239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ab67fb27a11f775facdc7ed7065bd2a8192f79903f0f008e9299f003d243a7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZS632107856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8eb011c71b1424832a4a11033274e6235f143bf60e1e6961fdcd41586d2f8b. 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/QZNWZ2334422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770d425e1d4daffd0cdd4d24e0b4b88343fc6269f8be554205694e87ebdd5125. 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/QZTB52217629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33167e53d65e2465a7d9ec68d4b7e2123cadb328f1f11c6bcacbf3941ec25b9. 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/QZRP42197678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc174d22eafc2e6a43f7a2b93bf4bf4e848a474156368ca88e771276a4950520e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN92448258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc937d7ad872e96a38151ef2ab0bd35600dbe1da0d0872cd270bf8df15c1045. 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/QZTB92330411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e5ee0ffec5610fbc8f2c7c7ba5c589018a74fa0a343744a870609aed17c001. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZRP52309892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d7849ba7c565d67d773d6b27d9a37cb63a9e33d097e2776014e11207df36f. 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/QZRP52219717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff71a4fabd183c725fdfb4b2f9f3e09946f50c270e2f7f5e007f5c96d91ed267. 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/GX5MX2101921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567ff5c76466bbe9adbc9b2c4309c0ae42db69a06b0e67dece0bba133ff3ed67. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6F2129055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d61d99925d82922856fa2f504ae98de6dea6a38dcd2a60bc686305b217be9d4. 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/QZHNC2535235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6a108bae59c75fec43cdc9b8323f1b032a25a9cbdda33e819281772a1fa6ca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN42594836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7d58c913769c108330407e215f54c2d6d46e6145802e2ab2557e61c512d63f. 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/QZDA52518419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe2fad573ce724f6caae262c591480717058ddd32e86634a64e47c097c9392c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFYX2594403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f2a9ae2cdc8e7302d3488f1a108b09b6d7c5eeaae0176d57cb2bde94505a6f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMHP2358031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bca9445031b9a3a0520cdcf24a0b76605dfd489cb52780bbbe10d5e079b9e5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM82356424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c028c8a770dfede4c8c927c9a35ac3c48f44aa9a72f181e3969f654381334. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM22387448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd826b31d5550e4988ff8b76f7dd8c70ea18967952eebce2d5be95d45cfda53b5. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GX8LE2319168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84bd5c5cbe25c6482dd778c9fc14ed854bd83659ea01a53f7e0f24c88b15c7f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX5MY2283240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5125dea848d57ad5fa4e826010ff123ff1121f9b225263bf938e329db20472. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GX5MY2283347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc162e30a1dde3785e159760464b9085123068497e624319f6eb4357a3ea9ef2f. 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/GX5MY2283407.
Once More (LostVolts, H Lazer & Arvenius Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdd3b9a44d72cef10008dbd598d8a71002d588efb7e02ebb191278bd86f80a7. 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/GX5MY2282851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b241febe67ae5e7971cb0f3f984160026d3531989ebcd28013876a2a35a9633. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZS652253870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf1e76ac955c897a1ad54dfce2b36d8e6d10fdbf0762ffd85be5e951aa26c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2213155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4ce49966091b414db276801fd61baa70aaaf76b11deece4d33d03570455717. 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/GX38U2210390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6efe5396230fee008e17b9fe85e6edae624ed39845a64b62cc0c20d67c5725d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLV62138587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73db70b24695825af6351ed26ad4c98fad9f2d351d9727eed9f3159896f41c77. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBLV62138588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3536576ecf787b4cb8caf29e2f0deca4f885d06f511b9cdb0f493de185b85703. 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/GX5MX2108391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13802ed1e173b4a090e664dc6122f77e87172206af19f2a7401ef3ebd544b69e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS652179697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab97a326b54cd54ba90d0b4cce2681be8b9b8af07f13d59ea51cc5aa6aac0e9. 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/QZVK62400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af824bca64a038fa1a96375371c7e4719b7f8f7bef0378eda8b1a821d2d3b50. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZZ8B2370858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822c3ffc10a641f805c99d0815d627c81db0c0432eefdea5561a5761d3ecc7b6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZMHP2311651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1209679291eab2563d12e82cc7bd32bd1cf6154c4ee10b6e36728affd0ab77dc. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/QZS642116742.