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 0x64e4856e44e045fd7234a5b02509d688025de9313a9105290d6c2e6ac58b7da2. 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/155e5aae-e384-4aef-a5c8-fdae740ff0b1.json and https://artists.proofprofile.net/proofs/artist/155e5aae-e384-4aef-a5c8-fdae740ff0b1.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 0x120cead35cd38ad7fa9a1eda655d31c3aefc20c6be6d78dd7d2f33ff567740af. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZLL92365820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7933e171e24239a7874382ddb3eab07f31f08446b819311ce0782bd510cd50e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZMEV2331136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc814affd2328ada7b2ac486029f77dc633bbe63144e4ed1caad39b2ce0d11faa. 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/QZMEV2385287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4471b30f4cb8868eaf46d333cf81bd814602f62ca529d5586b4491c3845e767f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMWW2316664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae86da3955ad6b124e4ec8648b6c6d76a7fb9b32ec22a6b7423426857014b4b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZK6F2462680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45470c4d6735223875ec19cc5b3932fb2c4b3c9765cd7f6be577f6a87b9177d7. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZNWT2403313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015fa4bb933aefed9de99f45c62c61a4e63e665e2563f3567f2df60195b8c024. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTBE2455292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4502671b9ddce5b9f4e60cb21a63e4deefa4b05d52b28f84d3702cc899d43e3e. 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/QZTBE2455289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473eb423a2960a0fa223077da17e3c903d844fc4c7988f7db5493fb45e37b552. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTBE2455291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e5b79450110a66f21fe877f42e44a7599866937c364093671598459cf10c3f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USLD91765500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42480d5ba0b956fe310b29f06115aae784bd10cde7dde6336712952b8e63c87. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/USLD91765512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192203acc37f8110b889859b0725137f31937df72168176156d134bcea8352dd. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USLD91766824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3acc1446ecc62d67ddeaf277d9243472f04ef080cc9a9d7861b844a676d462. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USLD91766825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7117026c4d76582fa55fe139c9b92fd413588ae9019502bea340e5c1061f84. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USLD91766826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42480d5ba0b956fe310b29f06115aae784bd10cde7dde6336712952b8e63c87. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USLD91765512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ced01bafb46f878b9a0b47fe1281d4a701ef170059e68a3c77f94c02eed22bb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USLD91766829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b7d1058e3983b6489b2e6ee5b08f6e0fc196d23dc6a2616ea8f5ffab2cfe27. 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/USLD91766831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d6f47201da4ac28f27d0bb11e30ac67a5fa31048c5d429c7d5411bf34fa802. 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/USLD91766832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6886d2bd7c6b2b4f82fdecf7af2dc997233f7581f7b9fbf0b4bc564a0f02cf6e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USLD91766835.
Young Bullet Catcher Flow (feat. Saany Goon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34ef27aabc9976dedf7d032c77bf61acaa728a55d005959fcc61e5182003f2c. 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/USLD91771111.
Look What You Caused (feat. LilBuckss, Arpbeezy & Mir220)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e1f4ab80cb424216eb372ce0aacded1407082b57596fec5bd2ceddfb8f1b76. 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/USLD91771112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864f140a1509458aa43be1de87652b11f7aaa47a90607935e0a7aa727409e7fa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USLD91771113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae45db9ff43e86b90c936f708e333c7f8940dea8cf6c04f8fa6eb88561bdae3e. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/USLD91771116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b04464d05271e665234e5b295a2556960e95c71da6af40a750d334f459f937. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USLD91771117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e71757352541c46ac90e3c10792ccd179e3913f8ab60d6b4cce66abb1b7888. 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/USLD91771118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb56f92872f53ec1b803d052f20708ffb64b04a675ec137d82b60d8b9787674a. 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/USLD91771119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17be83ecdc31c26310b5eb60765d0ba75ce9c7b97ac48b1e68715010ccb7df6e. 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/USLD91771120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268e25bd20f8cd3fc014aa988896ffe1e85ce040eaf22b0d6eb4ac84df5dbc97. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/USLD91771121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8157becd1f035ae524953f4a9221b55ae0e5618274c60333eebe5d6107dee9e2. 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/USLD91774249.