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 0x04c35732c87977436cac555d755a63fd5d35855342551fde706ad6f5b00142da. 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/efa1e140-807e-4314-8871-7e283424abf6.json and https://artists.proofprofile.net/proofs/artist/efa1e140-807e-4314-8871-7e283424abf6.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 0xf1ad260e89f67226891c4c3d21cb4e7377f4b4c385b6cd5f234c7ba2d8c4cd97. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZNMX2286958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b50663792e8aa17ffd18941935bf2f496610a8ff1c798429ae8af19367220a1. 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/QZNMX2286962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026f9113f7d61a7856768d9493ead31e0c52037f0cf48ac8a6a2d859bd93696b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNN22222450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba95abc16629a6a861de6ff1ce284950b1b94a0c67fb72ec4a5a2f2ab85dadb. 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/QZNN22240220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed515c1c03d85d85c24e0fbc687ac57a425ac93218a03c048facda8cbc06b99. 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/QZNN22240225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311cf4c0ebec81f7ad4c130a9b829d77fa2c3178f7e90ab00c454df63c480dd3. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/QZNN22240226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835d0cef9e14d1d8cb0a8d4244ea26cf290d80e3b4c1c096cb8a11257be9ca16. 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/QZMEV2301574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a85d78882e1fdd305e40a075df4a768c402ce8e3c21511f89ae2f0a8194c2a7. 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/QZMEV2301576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b93145ed4fbe20545943693124b933176d49ffea9ea8a0966143d945ad1b327. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZMEV2301581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7330cfe6870c160571f0dd9625c6f3e53ad6d5ec327149cd39882477b893cb62. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZNMU2319771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7330cfe6870c160571f0dd9625c6f3e53ad6d5ec327149cd39882477b893cb62. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNMU2319771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a65763e9c99f8b9235fe63584624b60d0e03d59a79d60c84cdba946298f1617. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZNMU2319778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3618ad6f4513e4225cdda8e74f5c15f354c3062c35f9c149ee33f27a9154fa5e. 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/QZNMW2366427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f8bcfab6b890bb16ebb9754e45b75f520a86561a9a97a73d95089ea828c369. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNMW2366429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f8bcfab6b890bb16ebb9754e45b75f520a86561a9a97a73d95089ea828c369. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNMW2366429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ec5e686ca0ef39c311fb1525fbc7e74b5213da8ff2a01f98630a61b9eca865. 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/QZNMZ2371169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0879e6e6806398c4bf6f0209c99dfd09e7d39e333f493f9cf952951b769d6b1d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNN22301754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c53ea005333c7c0d80edfabcda68bef2ad8429a712676ee1c04a8acfe68057. 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/QZNN22301757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad17b0de49e7b171ae942cc17f4698739f07ceb9923769074147c363147d2adf. 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/QZNN22301759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1341c219826d88b4ec3f824522486956b432501ae1c25af53b64814fff9bb461. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZJG52423651.
Fatal (feat. Lor Mark, 4reek & mjm leaky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcc59ec65310848c09595b9cdd37de23706fbad390ed5e03b3355555bc86d58. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USLD91756558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55865d1a1a70ca18eedd10df2e6299febd3bf6dbee48af0a4c6296da7128dba. 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/USLD91756560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b28f003a8bb1082007dc1d95995a12ede88be74e66f52be5d434a2eedd23e59. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/USLD91756561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae7260114744d1123ce83856445a9272bc20509c71c286c75238fee1a549282. 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/USLD91765492.
From East 2 West (feat. Lor Mark, Nfl Jizzle, NFL lor b & 29 tezz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71137b018a37d4050788451d9cd06e766c14d529f184b4d634f94fce577a8a6a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USLD91765497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4db7a080e861d3e97033b024cf9014a0702c4af70475a8acbb8428ccdd11d0. 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/USLD91765499.