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 0xa30d5140e737958a12508996e53f696b3ddcc8ea1f22ad6cd71286ea76523d6f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/200a96ac-7c2f-4bff-b038-1f0725851bd1.json and https://artists.proofprofile.net/proofs/artist/200a96ac-7c2f-4bff-b038-1f0725851bd1.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 0x665f6d6b524b4804d967746449e5f302e71944c9537073a9d446ecb8b51a542d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXG6R2001462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c674b65ca0fad42d37799a20189958eb37a5521bb6eb4a2383ba132b36c127. 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/BXG6R2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc8169f3860c9faf7a9b4f92e4f52298df29a3229f5c834ce2e681f4067df6d. 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/BKZZW2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71ad817b15206ccbddfc79ca21e2aaaff1d5335afcd9a0b903206d72f02bf46. 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/BKVYY2401536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505b1d8437603dfea087301d0ccaebe8a2682306eb265aa1e16110ecd05edbee. 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/BKVYY2401537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea5626de7d2bec1b79fbd9dbb5786662e7e8c163a0cff6e6bfc014ba859598b. 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/GBRKQ2590180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7306968de18addf29a66fa028f1d087644ec22995249344c230150456a0956aa. 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/BK4DA2505239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048ca1a25195dda482ca1329f47c05df21bc0d43d6b9df2a9c8be08b7049bf5e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BX9ZT2400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd616f8033c7099f8c51304732840fb4daaf8aca6f755d126840d06fdd3565d9c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC9002300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe801a14a2737f18dea05669eab90a3d0447773b46084156fc789b4daab95397. 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/BXG6R2400693.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71097f4d2525ca2abd94cd61845d0aa441d7b6aceda48bf1c4c86ca1a3b8baa5. 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/QZTVM2402018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0e89dc0c8722c67500f8d52b711a34a66e765c8cce160e3c1ea4ee4b185d0b. 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/BXG6R2400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7e6dc7fe25a5d6b4f05d2cba16b32f02c88a895e79f9025edf02ff039728b9. 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/QZNJW2487803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d36d6ff61d3dcb29555a9aad262e5ef6e32366ff574c32f9896cd8fcabf9074. 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/BXG6R2400447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d562e48b53d4ec6fe7046a54d42b9c1719a937e61e26295dc0e84b11dee723. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXIV82456543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8c87c42ff4dc28aa4ad60c79c120244508476f2e7077b07c084ccd8a8612ed. 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/BXTRN2500750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6045ccd83aa5c0142b18d1bf981002a9d657e797cd3a59920276c8367b85d44. 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/BCUWS2500341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b648059b2857a65b5d6cef945ff14293302db9d190e7d868858f90eb54e4d2. 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/BCSOR2500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964f7463f2aa32ad8bcfecd6283e2a68ca2def655ead3d2078b8321be39951ba. 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/BC65S2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8419ad980b1b98557d42baf0dd95daae5146789c64bc735265d2fc83d85d5c0a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKBSS2400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab234c10069d2085dbb93d8b345c4c8a1be840f798008e950ab1a6e8b5d8e00. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXG6R2300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1cac77b540651261d90ab3f746a563f6b810ecae7280b47701c98008f1ab19. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKBSS2300358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f0fd52f5143a8b092f714c66e3b3384e67913b65e25d608d90a4e4f0534d4d. 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/BRRGE2300678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91accf71874ebcce7e2ee81fd267d313d13c03e5efddaa28426f73c6f81cd203. 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/BCDFI2300108.