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 0x9bc64b13543ed496a5fec9a8ab64b2920f419efe4e4e968f9ca69240684d637d. 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/28fea388-7594-4ae9-aecb-689999756037.json and https://artists.proofprofile.net/proofs/artist/28fea388-7594-4ae9-aecb-689999756037.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 0x0db34a14d13296f606d0fb50b2c4fa8a4ac0fc12cdca10e14f2dc04d983bb416. 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/ITIO32400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5393c26ed2dffae48de74453bacbf4b97154119bd63c5e64fccf33103bc438ce. 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/ITIO32400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6c2183b8a91076ae1860c92bebb20d939ffab8eb126ea3779746b0f561cc36. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ITIO32400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469483ad5bcf8f53c2bb51e2a8d8b53aa41bd019c747e5ffef98330d86d47df4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITIO32400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25a61b68eff16489147c8f7ba3370633d340ea0830b1db8178f802b3be0f3ca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITIO32400105.
Scilla E Cariddi - TR3NACRIA Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3338acdf8631d630b6f95a9add8416c516db41452e905f036a4478247d25ece. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/ITIO32400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83947b86285470b692e7cd92f08514edb07bc77d38c1911bd39631801fa47d4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITIO32400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf59e76c5e97cfb1fb8cd39cc2cfa06d3adee5012436d3f50fdc68db4ed90c8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITIO32400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0942f2079b7c66ab4a10442a51e405184783ff28965cbe38365c16dc75c8c9fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITIO32400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c74000460d6e32a1517121413c01a83aef82cb41b226605645541dfbad4e32. 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/ITIO32400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7827ca779bd46b5d2d3ecdbc4bbd92328284d83979fb4da1098afae2e01abb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITIO32400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765386010bc7ad98cd9a8c1992e1a589df857c99ae9feb64b6bd88ec6fb8add9. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITIO32400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cedb7646668ea84e2813558272ddfbcfc767cba72304bc4937a6a731d4998e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITIO32400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512a486dc6b7680eb967bf1a667536232f820dabf3c4a909668bf5516a9bca29. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITIO32400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60ae742ed4f33d66de0ed61038fc9d48a22ba4ed4533a4b97e05793ef02a8bc. 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/ITIO32400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fccb23e87a27f3f1daac14983e8c93d0ab2ada95b2b5c2e397503ebc8f56396. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/ITIO32400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58ec8c58a095b23d4b3e7a884fe79308fdc707bd9cbce9e6af9242fb6058720. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ITIO32400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc128727e8fef227c1a69ac7440c7941d07be699d4c273e3690508b24316389da. 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/BGA472439269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e0d05a83fdb5cdf6ac45abceef4bbaf7896a6432e1daf3879dbf3c41d71cd4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAQOI2414847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7cec71aa185020c28f008847d6c312d05a28bd470ba73e7966973f00304da9. 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/CAQOI2414848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbcac183f85e25a2e1ce215318551f347a5343bf50aec9894cd980ef8304500. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NL2QC2101544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697470a0952a82243ae531f7ad22cc9ac4a7deec5d5f7b1694417c02fe8773b8. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEL712410106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d8a67af3013626bc545812205e5ad6ce9e8bb465189f05d563fc7cf203ba20. 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/NL2QC2101197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0be9e3e2c98957910f3010694f4274d59330c383e247167b94c15026460488. 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/GX2YU2300082.
Club Charts Top 100 - Summer Edition 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4147ddec320b706ced6a1d39fea08c0d7e2364eb043a6af741ba9e2692b3ff. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBKQU2376086.