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 0x9d0f2b0336be5408686582dd46736d1e6368105a405b4974666d25246491cb7e. 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/e8344d2e-0f4f-4f1e-a4c3-47ba6b49f94f.json and https://artists.proofprofile.net/proofs/artist/e8344d2e-0f4f-4f1e-a4c3-47ba6b49f94f.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 0x8c63677f3fd575cad275e4a96503a37634b7e66fc43d24a05d3e3715acd53ae0. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCABX1427349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dfdcefd79f5fc0e0abba60a6e7f0763b5b208345f2439526c86e983e1293d9. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCACB1487923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf0e4cbbb0260e511c719fa02ad0786e91c7bbca32f38635a31d95948025b0a. 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/TCACB1487934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3739ed16761c07a64fe7581f039f96c989891d0d5a4c36d6ca06b8d28d241d10. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCACD1576358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0942782ecfbbf1c2ac82678bb08373ebb68c950c35b50affeb7dd305de4ad3. 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/TCACH1596555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dce3865d8970d240ae7d762f8cb898aedca8fce237e56bad9504b77e9c2438. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCACH1596567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c0146a334e10f224a6636538684ffc47ba3a6ad2a1510004df91d630d5d454. 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/TCACH1596568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2819896fd80c01d82538e2198e34b0eb2582828d304b27804930267e4aea193. 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/TCACH1596572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cf557d3ab9bde2044f40b69ebc4141eb538c4145f64d18e3f4503c74d1fc8f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:38Z), 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/TCACQ1653292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed65124b8465029b1719bee5004171c73af5755ce1b493dbe562ad5b15cb67e9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:30Z), 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/TCACQ1653345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9d1ccd3d6c5ab1b96f0a0a61fcd813483c3e347324033b405773fec00800e3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCACK1553881.
Holla at Me (feat. Lonnie Bands, Paid Will & Masoe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf6e71f300e80d9b1c077c698eced5ddef145aa0d9117be7e19afb715e7d648. 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/USUYG1110007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce717c9af2fe5dd533b76fff6d521d15303af00582efe0be664a5beab744c0dd. 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/USUYG1110012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb7a2b0c9712cea451fe1ce11ae85276e85165164cd94384fc18b103708d20f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:53:00Z), 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/USUYG1110017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f2ef51734f634ef15cd539d33e9ccd4762121601c482700ecab18b432a1392. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USUYG1168110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e5388fbd32e6bbfff41c3d5e4d13ceab1fa0658cf61784669d57c6b262e6f3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USUYG1168226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a05da8a125acbbd8990846c8e0838255e0c0a68003e760dc4407144281eb27. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:38:06Z), 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/USUYG1168112.
Ain't No Problem (feat. SOB X RBE & ShredGang Mone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091255266ba236de357db7878227e298bc4f471025991cd7dba66a9c61d3305f. 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/USUYG1200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bbe7e4078a29e68199a1bdc4dbcc04ebaafac8c2b4d7b77ca61afc18279b39. 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/USUYG1199961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736fa0ebda43182cc4f7cf52447c4f340839fe66fec19f47fa37a31c3eb6cd8a. 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/USUYG1200084.
Bag In (feat. ShredGang Mone, Shay Gooph & HP J Rock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7938dcbfc9f6a459b7eb50a84382ead6b5d5c73fbf0036ec2b2dcf38fdaa73fd. 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/USUYG1200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06769c2a4de80fe1c1eb104947817e6eba241818ba8c32113daee8ebf108e89a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:08:29Z), 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/USUYG1200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0275538269676532b9af7a8d91c256797272023f30556a1d4d2041d7ff94bae9. 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/USUYG1200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf999e2da9e32cbdbe4f14b119a7d916f32d1a115db3d4f3908adf8fb7ab032f9. 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/TCAED1973299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84a0de29a1d1122fb8addd3b883fbdaab41dd7fb47cb6364ac7eb95de552cde. 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/USUYG1318796.