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 0x4f720e4d9a573472e221bc96a6975e74868b8b398a789fe6af72b6341cfc4bca. 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/13f19477-beef-4fe4-b285-8a5965491a12.json and https://artists.proofprofile.net/proofs/artist/13f19477-beef-4fe4-b285-8a5965491a12.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 0xbbe2b62479549dd83e3e9bd90289b07fddecb40f988ae9c12cfa8917804b2273. 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/QZHN82412267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e94abbcb78f7f67a081a26661029112de785957c8957e1def0d9acc9ee134a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHN82412268.
Thunderous Rain Soundscapes for Sleeping
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa314d1649789287331185f3c5be8821165afd86521ca55e401c01dc12a3244c. 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/USHM22477439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ac901d05b209aecd53eca4d74d27afd90cd01bf7f6c0df244d42c94ea11ef9. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USHM22477446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8811082e82b65316fe25868fd2885496adbe3d03fc78ce467d9707253957aa02. 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/USL4R2449016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a9703b122b36460b12d503570a5eb6630e594bca93d350307421ae97019a88. 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/USL4R2449020.
Pirate Ship Ambience Wood Creaking and Thunderstorm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304bcd1b64a89a09587c2d53b0343027a692b2833c4b7f83f7c95efd195089d2. 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/USL4R2449021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c7772af85a74a1c2f5244b81af51cf774597b821f65b40674409cac4596e00. 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/USL4R2449022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f762ce49271a30cee51fd64b08bde866fdbd3f10e0d4fb29b5e7e6764f5345e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USL4R2449024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022010bded33f50219769f7ef7c4733e6e68634c9c393343455731cad612311c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USY242443837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc903c44b55d558d6516d04e65a7a3bbf02d03190679810c5d07a7b74383af929. 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/USY242443839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc93f8786716bd8f38a2964f67d8ea1aa94ed98fdc3651d2f52c2d4eab174833. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USY242443840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fa3af1bfdc74cb07e5f93fd80382669940388b167fe46f8f1ba771364ebba5. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USY242443841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e021300629ce523ad4407d72c5ba81d60bc8429dfcc9c4d33147c4cd937917. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USY242443842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900b66a2566286383d5e7b49247ac3972fb869f46fbe2ee5cb679068faeba917. 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/USY242443843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81da9873e0b1136fb3bcf9a22c918895bc9c429680d31ba766c504c5f5a4ebf. 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/USY242443844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7380b963b7f70a0e90a101794de69ad168ad875c2ac8aac94c24e3da9666c099. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/USY242443845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ce71e7481802277ba5da6378dcfe0fe42d87057aadd293dd19038ef89defbc. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGH2524178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f3acf2b2254daaa2889b76fe78c9a21b542af116763987e45ad048d0a3e2d3. 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/USCGH2524179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d1ad9f7c6f48ad280e7cac5bee975310ce997b4f449f6a3accd0136b49d78f. 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/USCGH2524181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e8099f297caa17ac6e56582b3085c3941759352743b1c884ddcab7bdb32d56. 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/USCGH2524182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8a5e5d65ff1ee4f973101f27c961fd64fe0b24a6c5e517bad343bd18a90caf. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/USCGH2524185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b9c446fc7785ed46218aa9f54fe043bb341d64aa1af47d8b4adc1156bdd21f. 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/USCGH2524187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0b43c1f766833c00575dc8e37ffbb0bfc9269dd87fc0ff14a9ea86775c3087. 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/USCGH2524188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0b195a7003bc9a57182c517a72f97dd66bb0c0693f8acf2a23e74346d3d3b7. 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/GXESV2540561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e4eb2c46abb2743feda6327cf49c6dd83f9a791a4ec0e7f463c7b098969eaf. 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/GXESV2591477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e13fa57e6e63429eb76be6a2bcd947bac492b7305c4923b3efde13d53b9233. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXESV2584781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe479f931d4f3e2f8f8e75d0036c276ec6c8cb30557460175b417799c18c93a43. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GXESV2564191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4474d59e201a61b4391571b491b0bd3d69dd9b76a502cbedabed2c3a00490fdb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GXESV2520309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09cf4c26960a71364dad6109293cf91c41fb94a585ad1ba4004f2c9cee4365c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXESV2512997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be51fc650dda4f1bb267aae87f3441ab1da3718325bc133f872436404c87e4c. 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/GXESV2551790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0bfaf0b268b29467252850ab072ffaa1cc8d814544ae2b4c30048bd1a2dcfe. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GXESV2516628.