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 0x43827a6e2aae45e086064c9acff65e63785336e5452e1e907115798c7b58579c. 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/17d5fbae-8a80-4dc5-9205-a4f040268c9c.json and https://artists.proofprofile.net/proofs/artist/17d5fbae-8a80-4dc5-9205-a4f040268c9c.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 0x5b700d266db5f0956b3218c64b01565289e1afaabae0c1ac20267db772d49157. 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/CA5KR1841975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa55aee10253c0f4dd2da50b5ca3a6b02aa3699d07500d69a2c1d8847bf1b09. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/CA5KR2010424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc426fedbb1be9207765240babaae59c6f799f66c2ec810a308fde9a1b798ad88. 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/CA5KR2010427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d2c656748958e1450afad0272cd7206f59e53953e58fa7c327dc5f15c5c63f. 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/CA5KR2010430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d98b64cbfca63e96f4eda738840cab5a5724d4133cae53987c178f16502a42. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/CA5KR2010432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6fee27b9c23e314327f839285726713262e6eca65d53f740dde7a1ce5fbee2. 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/CA5KR2041021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaecb66cb82a5175a42c3a6ec32dad692c0451e70435dca9abe0e23367561cf1. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/CA5KR2082163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4afe57578c4270496899478cec00c462dff64b0694bdd8718864bf7f561421. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CA5KR2101124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bea70ade91601e2bb8ec3ef63cb8b729dc1c9e9010fa420a3653aa5639c8a0. 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/CA5KR2124000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7bcb3a0161cdbe6e2db7023cbbac9c93e8657d6f74b0e620c7761f0b1b7683. 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/CA5KR2185999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8537e4951bb191cc7ea5527ae1a1fbd111ce33424da19507b69146cd7062f301. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/CA5KR2212550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb9ade47655c46925d02d48e8230edca7cc2906d55282434dfd36d4f0e59131. 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/CA5KR2328543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517e28fa372d1c3b16e56a6bbe1a0b94a682c76f6861c4faad7e22beb903bb9f. 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/CA5KR2352576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efeff9b6e704e7cfa9d5abb434eba75b9f57c2e8dddf6ac387197dffd8d526c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZMHK2568521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0c6ef5984f4184593515b3233c3b07cc97a8b62bfd3779287c2973a3f604fa. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZS642599905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b69436b8098a5a077f52b214f129f3d6c08d8c03af4d6542e2562c1574875f8. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/QZMHK2556503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9993460eecc3fe1a027d08636cf72296c4ae1a993d10aa316d9b855d562505. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QM42K2556756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a74fa40805f4c7f6517da508958a31ebd7d5c7e9d63acd0d281e0e66aac943. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZMHM2526993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b78c126915c4bd861ea99fbedefea1fedb71c22d81d6b084e268db6235df00d. 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/QM42K2574977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9965c92112de0176929eea000ab278b162080a5461b55995a2b56abc806b871a. 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/QZS642546550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392073237dee0dcc2f2e3be7b9ec937d3da302974e208c82b49f7911cd380f9b. 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/QZS1Z1628308.
Nothing But... Dubstep Essentials, Vol. 09
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2081033c7c29162714e7eba8282b626e08bf6229bc13b2a1205f5d76659d87f7. 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/GBKQU2023909.