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 0x4cff37c496651fe26eb7f076428e9db3ae262ce9ec223676a40b75aad4caf66e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ce16f75-5e14-455a-b099-f3525c976e4d.json and https://artists.proofprofile.net/proofs/artist/7ce16f75-5e14-455a-b099-f3525c976e4d.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 0xed4314d0fc5df930f2e2095fc65117ef52cb05590022b0affd979275669c31ce. 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/QZWDW2214566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0828e528920e013110d0bda5900f127df36db19e5501bc634bb8e8b3576a669. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QM4TX2353521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5f5844f71845cdad329926cc57e8fd3d386871415f9156bbb5e531512991f9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM6N22336240.
Lovebreaks Sonata (Ultra Slowed & Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe482f17e1b5b96a5c295f85eb22a656c6d9eb35ae0cde3b9683fb7c2c790a3f5. 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/QM3DF2277304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d28f07d30b3588769e60fdbc8a786dc3ab092a3b2189f16537da2fd9f3387e4. 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/QMDA72362013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522e31618adc1b755c00252af91e431396a8be998e8bd35e06ed7cab35d8dac0. 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/QMDA72362014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a5a7f9c29b247124adb481e7e749f2a5cbdb9d0e960d32e383eb73c544b485. 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/QMANG2221176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe929b26422afef737bd3cc1b643873fbe6748766f2b954c35f3490d264128b60. 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/GBLV62308896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d07ae810c8a47fc887e582d6a57be63f670d20fb04d497691030e77e62e04d5. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GBKQU2436555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46871093eed57cc75493c6727cfb61e4eecaf86fd082b53bc9d3af6d71d2c14f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBKQU2436564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1011746b49fd8fe708bfc2dddb910311734f8238a6912f14268610650d033c9. 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/QM6P42454812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3efb8157b56260fbcae24bb693ae1274d7fe20f23917281e7ddb9a1916e94c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QM7282421922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e8dc80a4b886d22aa2178fa953afc4c1213ec4c25bfde48f1df491b1a98443. 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/QMDA62496564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4331bef27f4f9d00129db284c7cab7410f8ee464ccb9db1e2cec3bbc0af4d573. 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/QM4TX2532751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d9244161176ff32d76fb2234194905045ced851f790d13c3eb6161e2bb2504. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM4TX2552562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bb9cd633f4bc670e5930ca949d0508c18dda8359a447e2db1a6d9413689af2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QM4TX2552563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb20155416787038f930d8d7232c984c092ec00e90497b41cede76430d9d663. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM4TX2572215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b83f950a43587646b94f79d6f739ff160a151d0c1993038b6d8fefbfe0d130. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBKQU2513373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8166b5e1d2dad86012918818a458f3829e3c5451c7a421bab74b4b981e4a0b4f. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QM6N22572080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770f324073bbd8bed738f5bdd4d88a2d09c31f858d86d343a168109d6b335d97. 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/QZPJ32461018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e702c08e3511ce23a18b14b8f9529cce2c2541d7abac9613c5e0a212ab10f0. 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/GBKQU2535769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30ef751e8972fe81999821958a58c583def9dcad06e56e885c17147a6fe5418. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM6P42585374.