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 0x157c63c87c6dfe61326c65a7ea0b689cb068d70172de289c10015fa5e3e4351c. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12943112-cdbf-46c5-a6ae-f6914042cef4.json and https://artists.proofprofile.net/proofs/artist/12943112-cdbf-46c5-a6ae-f6914042cef4.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 0x29a9b0863405648044e7b24f188d5ff913cfddd9601dab7b49a5281e86a54168. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMCMY1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd332660107d29dd4bd93379aaa94038ea9569a713f6ba223b257699f6d8f5b7. 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/QMCMY2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726dd65b87889e9f61cf12a7a08a4db2528d7d9a95b554183c5bb15e8f96c3f4. 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/QMCMY2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1042ec83c150ccfcdc2b07f1f7160e9a6db82cf5e18e1b949153ebb0e49f3fd9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMCMY2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08f57511f12442cbb7e4b78d43f511f14f5dfeb3196186f30ca84836c858df8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMCMY2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefadc141e7ffb5148ec36d4ebb1aaa91a39e8e9f78ff87c7badb7f48a09fb107. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QMCMY1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda16f80d8490b793c35cfd66141d6889a568ee1ede7b8cbb42d276328d13f94f. 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/QZQAY2496258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8538ce27deb2f99a570146e37565f63e8fa423578f9f0bf8fb5d7c341dd56d4. 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/QZQAY2402896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf701dd8a19ba204f1dbb5ff31c765c33cc9b90f8c959e9417819666d335debfb. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZSYP2371051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd26de6ebb10ec37d78f87a57f8e25001788d7ac86c9a489b45dc4f988abace. 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/QZTLA2490304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab062caaa5f4180457fe41a05215799c0e2cc5a31fbf4cb39508d2807e5aa70. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QMCMY2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0455916b664a9ed07b11b3304cba492bd9b082ecab42cd12d814842e2bbcd025. 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/QZTLA2448769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0455916b664a9ed07b11b3304cba492bd9b082ecab42cd12d814842e2bbcd025. 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/QZTLA2448769.
Something Out Of Nothing (2024 Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dc9d94d42b493d42f6ccc73074a33d3332214a859bc78f2f91f805f461dadf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZQAY2455245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7ffbf7ccb0f6118aad3aa967a8367adda7674807edc581fc8289e9135f3863. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QMCMY2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c56cf85ef35713f0959c9999f7410ecaa3ee82e2c41e12029ded1094b6162e. 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/QMCMY2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb339109f5e3d667a19222d1aeda67ea1add9da7a3972d2864840094ee70acc. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QMCMY2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e066dfbf750f513c88c9ed40d223c23cf73eeffe6be6c9575f1f1397799f21f. 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/QMCMY2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab062caaa5f4180457fe41a05215799c0e2cc5a31fbf4cb39508d2807e5aa70. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QMCMY2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce810f8dbde00f1b8f72e78d10405868328a76459dffaf805bb5d3bde08a33f. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QMCMY2100005.