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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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919b57472067b381ebad925198040ff712688b01838e423e03dadce2f59a059d. 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/389297f3-a3c6-467d-92d1-7a5cd75efad9.json and https://artists.proofprofile.net/proofs/artist/389297f3-a3c6-467d-92d1-7a5cd75efad9.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f590737fdf5d53f3313d3e8650528d17d07c33cbfb8c445618dfd950a8dc14d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:09:18Z), 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/FRX282156926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397cba0374bbfb2689ae5c84dfc4962f19c2a139897110e436550f875767a354. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282156929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb12aafe22a1295a580277da5eca4a74b939250d62593062e8d8e98ecdc3c69d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRX872127594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbebdc9be1b8212dd207f5c772b676624f7d0352e792fe302a58691edfc7173. 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/FRS182121582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7995904f72c951bdf4bb6102067cd5338d41d801b22d6110f4b03eb8089531e4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:07:59Z), 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/DGA062260209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b86f66447b25471c2786f68ec8bdb61cbbbe3b2acc6eb72e734a0c0fdc13ee6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA062260210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03550bffdbfc27413883c3c7662a2b9ae67702e27b255d5996f570474cdd9df6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA062260211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfb7c59457ac775be99b7b74c543d6b4a870aa51a7b9d286986575e2900ec38. 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/DGA062260212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf573dc84324de036d164f26979a516d7c4410278d718866630a73a9ce7b091. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282386003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71d6af3fa8aeed5b706789a013d2bf61ecbf7839ea762b4a2eb45d6eb5c49ea. 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/FRX282386004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77abd66e1abae7e704e244419e4694f6eb958ce6459aadab07cfd86832bb322. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRX282386005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f5a16ff1bfba435a6892ffc6dd07813d3a29b1b3f1ac6a6787c159fc823b25. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FRX282386007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81a5cdf5d8aeff38f700fa0fb3f80d8c7dd7d9a4644f5b0401536b4e130b318. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:21Z), 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/FRX282386008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9a01c16e92b685957880828d8117d29f74d8fb43cbe58affc4b9b22a4e83cb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR59R2428155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e218b1838020485ea7b6298c5c07ad91d4c1c95b9313ba3aa97d5589ac6213. 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/FR59R2428156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e6640492a85f2bb9652b7de5a46c672d5d7226f9208cae974f93dedee7cf5a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR59R2428157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc2a123d643c9235038c7a6cbee740e593458b81d57457d729a095971be43d2. 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/FR59R2428158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa60d687335ea18f0141a97a02682a01d02585b2ef0742c92f1e2ec6131757d0. 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/FR59R2428159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804b05a88eaa42ba146d768aa395e4bdf6a55c667110e0b89fa0208536fd976a. 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/FR59R2428160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e21db149bce2a65b872a9c8808e9543164673b6b9d670402d5a38422e2aab89. 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/FR59R2428161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27284203f0137b73d48eb084bddaad5e3dde04ac59088441b62f8ecf330c976a. 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/DGA0M2493878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8f158c4b26d08e48f6d1952badb3e8dbbeb438a518e5f72d371cb5285fd094. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DGA0M2474830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f1924458f245468dea512e3138e0bec90334e0d9075c529501b141f119155e. 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/DGA0M2474828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476d6bc4e81f64550ba95cec50cdf41ce3a3dbe08c6cc9bcb54a2b39a2fd9ecc. 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/DGA0L2456136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b44691e37ca4408d299d9adc6026469e7aa7a195bbccb5ff7742523b35b0a2. 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/GB2SA2200012.