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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 0x7b549d32ffcfa0add7dc3fb5d814c664f73f8d7bfa9bbbf70fac307581b13823. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49bd5739-3817-4f93-9882-a726e6a97e53.json and https://artists.proofprofile.net/proofs/artist/49bd5739-3817-4f93-9882-a726e6a97e53.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 0xb9b32824f7975f84e74d1e52225080634a3790044442df3359e586134b869ed7. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBKPL2208536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f0e223f5925ab3d7b5d493a78ddad84d88e509de59dbfe146dbb0bee5f0e2c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBCJY1200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733772c4628485c5c9c3ef92bce85d1120e48ec7c620d880a47669fb11abbe7f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBCJY1200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0419a8c83848d4d30fa34722f87f229baaf6eaef52a4a9eb3da86c35649fe50c. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBCJY1200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3a908187a7fa23ba401ef696f22d6f5a0792fe5f65b3c7ab59aeffa7734d91. 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/GBCJY1200051.
A Journey Through Skylines (But Sweet Dreams) - C41 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09359e4030054f1d4265566c26c38147303c23dffaf721a233ed14b78c866cc9. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NLCK41090376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d255cb9037fcf46df968f054a1323b22064db5c891fd61e3782542d4a51545. 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/GBCJY1300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e68dbc64cc433152fa0d7a0382f34246079e3f60f217858d76f86a9ffa833ce. 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/GBCJY1300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a6cd0d857470ec345f719db2614ba14d2f8390d3dbd416daaf0b7588046d93. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBCJY1300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5acb834a62ff8f23fb65bd7e104efdb3adefbc9803e55ee29bb73957e31147. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBCJY1300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d719332275c71fa658f9b36e972c65d95241dec02ceff232759805f8a20e7d3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBCJY1300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0557f25f6403a5fa5b8b9329b01d26bdf91e26e4fc40ed17f3e90c308cadc611. 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/GBCJY1300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b93d093e2a745c9913ed17f3ec26188a3460d2ca284bcbf484c1115fb941f65. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBCJY1300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf94bdefaf5788b237ad24885a5c1eb7cc29778ef52cef932e5b3999cf82a2b. 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/GBCJY1300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd7392cf841a59f703b3d4b6df61055e6c3f99a9449204bc920c10300c6cb35. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBCJY1300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05345a2c01ad97503319e6ce4ab22587836d8063732b8994244874edc437046. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBCJY1300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8543905605a2e5a018094f409b60fd012df924ebcaba2680a02bbc17bccce0. 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/HKJ961901238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0af2ee56c30395f05d4df38c151656a81e7038fc9095808f3e55865691f9cb4. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/CA5KR2490846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e83881a2f679f5017df754223347b4d836714a4dd41d13096159222a3b08a04. 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/CA5KR2490847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73d9e8ce1602f5b2d870039fb96f2dd000bfc32d0d24a563ac6bcd37ec8cd19. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/CA5KR2490848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5911ee750142c2008bdb4844d125d2eab9ceeb25914f5422ea33722eba4a4761. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CA5KR2490849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef79a7a4242759c72656223de34fd05ac10a2226f909ed7ab47307fa02662a17. 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/CA5KR2490850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7586482d14a350e3ef24725bdcf1fa7a20cf219dfed536262ab86428e7836d2. 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/CA5KR2490851.
An Explicit Sequence - Zeze Wakamatsu Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781df82916946572553c20acee5ef169ce25b91193b1eb296ef28f48e19f9337. 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/CA5KR2490852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca8e903b3a44e0be102822fd3ea3c15d955957cc115a619ff2822fe37bb21b0. 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/CA5KR2490853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b5ec9efccb229058fcd4173e075cf151ca1b487516e013896bbfa1c7dfe20. 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/CA5KR2490854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e66b8d0cba6e28aafdba8f6b64f65f3c11dc581ef85e970c86f02f018fab8c2. 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/GB3Y21306018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d94b732fd6ca2882eda958935e720dd8bd69098eef1e03866caacd2b9284518. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GB3Y21606005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe832b91e1a517decaa08ddff2f5c4d4ad1b0d266e4c4e88d5bdb17fde6a183a. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GB3Y21606007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d486151604cba6c2d2b08de69d16900d538ecd30f058f830bd95f0d1e1690e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLCK41011711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6003873b145b2db6b13c2f2ed89141582528972a43ae603ae7b20cf2711eb7. 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/GB3Y21504001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b7765c59dba228d0f733e77a54f7e4669f9fafa070ac0411e649ffb5b8689. 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/GB3Y21512004.