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 0xd5059aaec9d88244b5469ccbc8b1a8dc32d33185edfc4de15648f408a7032242. 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/6879cdce-dad9-416d-be4b-dc1fabb77c55.json and https://artists.proofprofile.net/proofs/artist/6879cdce-dad9-416d-be4b-dc1fabb77c55.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 0x14d5c671d12554230e6da1420df6216b89b3b6c56a4d6a1fa5e0b471d6076e87. 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/JPR502307572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9963b51fd7fa7b7d335ac370ad4b5c47998c45f64c68c37751f9b432cd295fd7. 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/JPR502307576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26895a656b56af96702ced6693739af5c0200a92f0ae2bd613689212c8261aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPR502307579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca737ac5372dcce02fb740025dcc14e7591c1eec6e5271e8c44646daa7c726f. 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/JPR502307580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f41169612db0ff6f675fbafc531370f5962b6c766800c716f65671ee6fdc8d2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPR502307581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ebd96329dc5f4d46fad41cc2399e2ba2c1045bbbd12177dfb3d0a2c7762b0d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPR502307573.
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 0x72219b2cf0a06db2917ffc74a74cd16457e9b8cec2327a9ecb69d6091e9c511f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPR502307574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e72f4b9a5d3568ab66ed0c0efce3e8acd73d0be80e9261d79f241a485c2951. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPR502307578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb397a05adb30e5e90a8e2fc9f363b37408f7eb770d3d94467add95a4efc1ae4d. 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/JPR502413154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe45b5c8acfb548e862bd0aad208d64a73432f7e87af744528eec80482c59f62. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPR502305974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf281d41e3757815f560bc4c61b44a40c87489721a63f90763e4bc3cb9cca1f. 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/JPR502304822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7263b47dc4ec864d025ac19e970b50b8ebe4ea73f3f273afca839bf8fdcc1c69. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPR502302955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69be5a3c6cd45231df450d50b30e58f56257430fba82d5966b7093837fc4df98. 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/JPR502301329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d35e8d3f3b6a1ddd58eda78efdf32500b0851265bec41ab1e66afdea2520f4. 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/JPR502300333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f4ed76814a84768141a6787d97296bf50762da56147245bcff54415bfcdf14. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPR502207820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ea00e1b7d6d901cd7a74ba82d52edaba5215bdcceb71f6659c2128278ee7db. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR502203756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f01b438bb8a2135db7cad0e4cd775ddba2b821c47b1976810da1a2917a93c1d. 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/JPR502201204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1935fb1f8b56f561d1775f8646b200f918365a1ddf40a741f6cecf34e1c0252. 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/JPR502200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0608b83b7c1180c18b1a387c9d205a163daa5ec66f229f0ed22016acc25c372c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR502153340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3866673ee421d59d888d5b37acf4d80464f102420630c9b17150083a3e00e20d. 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/JPR502152831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16491b967b1cbfd4e210950f09d53ce1edd33df95cddf615400efac012d873e. 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/JPR502152292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8932a1a6da9c66eff3a9d914dfaf715fd03e9c8c1877cea8d7ebe522e4fdf0f1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JP92A2102700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0716b5e76ed457d948053a0a8e8e98c63bff1e3a07a164636824840ee0609b29. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPR502416180.