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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5e910bf8f4b8230a30c328f02a2d04d972333f0899de23ae0cb028ca6f1266. 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/ec2893c8-905a-4055-baa2-af5f2ecd12b7.json and https://artists.proofprofile.net/proofs/artist/ec2893c8-905a-4055-baa2-af5f2ecd12b7.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a608cd5aaa59e1620dd5e78c7f6d1079e25a680fe5dc1c9d302722eec8e55. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:34:14Z), 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/NLRD51708102.
Ten Seconds Before Sunrise (Moska Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb188f3d1f061c4ac59329384c3c55d8a62d2d12909254a1da39e64b641b52c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZ5FN1731214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44802791a2bfead1ae18ceee37bf66ee286d76b6aa1732ecce51bc7c402de994. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:37:32Z), 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/USLD91718419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f792e27c048e700d4d87d35e35b895ed8932f2735a674ce0eaecb68848a235f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CYA111900437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b64a3731031e316981ac51abb45bdc52bda4d920d969fbdda1efc80e857d3a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CYA112000362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fb4ba1055d22c6fff2da63d955a9c1334dbe6532cf4a726c5548a3d4ee7279. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:42Z), 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/CYA112000332.
Loca (feat. Sara Jaramillo) [Acoustic Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958a1fc259060e691877cfb45751673badf1f8b3b1c678338f24c1e30ff2cc36. 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/ESA011850779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aea69b6e1816ccc089343f3c00d0a9cc60929f7d6b3f41fb64af0a83a9ee8cf. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/CYA112000567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbee8c669198ee1f2729dffa7c2d1c6d44777b399db15964782e404b039da3ae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NL1ZN2000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f11e1600055534f53b244e175bcfad63a51d1ab0d1bf64fbeb83c6570bf3c2. 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/CA5KR2144840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf942e6a961fd977ebcf86763b289bc537d22129331e6db6c670751bf8f19283d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CA5KR2174516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf370721e29e3cb3b28a8b892c551e5371cc33e6032a16f276a4211ad3ba03c09. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZN882142941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd987926b99eb8e49a0a8158e50e43090781f4c049d39cf041b14277d1aa879b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBWUL2159035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488ed07408de61642d5b7f5aec02867fab8176067cc73f8245e3dc099b000da0. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/NLZ542202435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3578bfbb0f15e1efb19c9d4aa2ba293bf5c5251a2218851cbe3617bc50aa29. 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/BRUM72300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5f39293ea4292cbb1a0ffb3008a5277b3a2a4c8d8105db8b7a7c78674cb15f. 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/QZN882391793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc2a04ce83e38c7cd5f8ec73a2054d31fa2798bca49ab38dd1ef32ab5fd4b03. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:05:55Z), 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/NLRD52316740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2c2badad2b27aeb1a0c917c76dc42af91e2d5cb6afc6d8d99677fa1ac054f5. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:36:43Z), 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/QZYFZ2390120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a55715cb82a1c75812775648c0b053aea1477b32bdfdc9890ec4e4674467dd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2410054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132a13b1bf8cd9b8d31ec89252669866ee7a6c92aac5d108aac4a8a5b11ba389. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2410055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f05cd336fff5aef05e03f440b70aad13c859e2b889e29ef4bec9f762ab4bc2d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USNRS2443285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896f1144eee93f0d025f0004c3c585a763dde36550b86aeb4830dc42917810f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZYFZ2461886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39c75ec371ad972634456e8288525bd4474ead7f2f96fe6ee2229c95e38159c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZU7C2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a0450849d5ee8d31cbeb50fb045973d2f3e6d08eb51bb0413fee86c3776ae8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZZ662433633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4221f5552c442a3a5e35b3b2a1f908320d81db327de860490a80aad6440ad76d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZZ662484476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40540dc2cc04f329a364cf6ea164ee51b69546d50db4d956e0b186c520a0b21e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMDA62502764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fa0c67829713c840f9f203e103fd1c5e4b44848c11dee186c5327e51a0ce96. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CYA111900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a691ddb2fef548127b643765e60fd7f7eba8637b6a00147a74e68e57acdb2fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBHAD1300299.
Amsterdam Dance Event 2019 - presented by Spinnin' Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fa0c67829713c840f9f203e103fd1c5e4b44848c11dee186c5327e51a0ce96. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CYA111900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa751d6220ec537042e11fc47533511a497833657e9746e781d9909086c476f87. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USZ4V1800161.
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 0x3a14fd60a6521a26778daf3a0428eb5e4656747ec250257afc1213db680e891a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USZ4V1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9848b8df14d9fd111c0aba4fb7f9c242b21a192b7b1959bea26a5bfa4ed21fcf. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USUM71704068.