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 0x2e4fa22b2ede248bf4680668831289a64670c77fa14c7622c6ab7356e77f2a0d. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/895715da-8563-4ae7-b508-477b09f03e26.json and https://artists.proofprofile.net/proofs/artist/895715da-8563-4ae7-b508-477b09f03e26.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 0x4ed3d07f20027328b017f0faeb9134a13e99b3ab4299ffa8dd2ee64b2781d08f. 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/USHM22166133.
Everything in This Nothingness (Remixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43685d67ce169bdaac0ead42c97e896161e66a8981c65a59215e89d751b8a878. 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/TCADL1858716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328f6da8f05f44f2acf0954d501f4b9abde4aa3164d32be7b182b6be0dfe3a67. 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/TCADL1858777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24a555c35c6ac3ddd8a3ba8c95748ac72d48a4cd0e4029816778b12e4d9c104. 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/TCADL1858814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f372fc35d67b485b10cdbff7f1bff0740d106ad7ef660752db05bf64a019f8f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:59:02Z), 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/TCAGQ2228426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eab4e2c9cb209f5b34f21b482cbe3b4492d6533646c6ae299562a9f6f3422ef. 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/TCAGS2212838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7aa2771b580fc9b8493e68123a4498edb2cf52962ed817811cbf8853bca3b1. 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/TCAGL2284580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729524c93b20801be815073ad576c9a80796c641028e132f45917d774f17aaac. 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/TCAHB2311313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fce905eaa6f41fccaff031a1669d0dceb4fe39aaab6532b66cd8fcf5190222. 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/USHM21944939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f2438679ce61601dc04dffdf03685e07ccf60915d6a8afa270bc8277f53b1d. 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/USHM21944940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a95184d4fd48ddca20b2294797596af36134b8df06b36268a774714e8bca9b. 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/USHM21944943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eb8e7f84eb41ab00853104c9111e7ee05230d7609a81acd55ec46d55872c7f. 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/USHM91891703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abc22d5530d4ae754bdbef55dff0dc506f87efcc7dfe5b5c561a1172d2a9b15. 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/QMFMF2443218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccce2ab586f6463e09a3eed6d4b74dfbaf42e4dd478ebcf85fb2e0ec607a309a. 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/QMFMF2443219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce028f6e254b21cfbf543287e0642c15c83d794a4e3185623a03bea142bf153. 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/QMFMF2443220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e88cbefe0aa5bf13497310bc4c7ab51b464b2ca36ac73bdb3b314d1a4ca4c97. 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/DEBZ72500075.
Hit The Kerb Running - Iamtheshadow Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c24275a54f7fe76432c2078d4a3e4c847f48c65acc5c5383e33043a256d78c. 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/DEBZ72500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48069ad306e3e9ef284dbc1ca65230f3ea76887418883019ba279f59fc96c8ba. 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/DEBZ72500077.