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 0xe88718ba0bd5e58da529f3aa0f703497a1da73c6b98ecfa0e391675fc37bc374. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b8e14f9-b864-4c3d-ae83-8ba41f012e56.json and https://artists.proofprofile.net/proofs/artist/6b8e14f9-b864-4c3d-ae83-8ba41f012e56.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 0xd88edef9d3237fbb8c13696dfee61c5b2591032bcb82f2d13e90f789d2cb6ef4. 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/CH2881800300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9139b4b73e6548114e1edf408a5896742d224fb07a1547dc3685ae52719405f. 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/CH2881800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ac786bb24338e70b2338931d169814e0782c0f5fef786944f8ede6836ff6c9. 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/CH2881800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6e9b4ee61f4b73ac65b9c1a1a259fe78f37ca5ad37d590cbd0450787377bb1. 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/CH2881800330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7048222904beccb1a432bd80d15a9d349dcc57e3933519ab728dcc61f0a375cb. 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/CH2881800340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7eeba88174f6a29b89ec5be4a54850656383d227fed9fc5fda4268ec6e8429. 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/CH2881800350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfaf4e782bad0de971364731de4008f17a55655eca6722e798f3ad14641b5d4. 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/CH2881800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b46799b42fbbc603707b7013c4446474c4a5cffc8252b48544b9225043dc28e. 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/CH2881800370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe6f85cfaf38a65805838748c65f7026339a4fcf4c06e81b77c2ae81da7f356. 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/CH2881800380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6e1783e8722116fa032eb34e826b6745575fa6fc4f648b6371a2ec5d81ba6b. 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/CH2881800390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4f782caf17e73f258d0d0c1474b02f9188873207e632a1e2ee7b40262eb164. 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/CH2881800400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5c6947611e6a0ed1dd668dafe33384eace9c253e4bda4ac882baa0f252747f. 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/CH2881800410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d6636409d5114e4b5cc898134dc0e0bc7eaea19f01bd9f6b01929a102decbf. 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/CH2881700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75363c3804e16c757d0558406afd65b4d3a4ba690fe96f27f9bb625eaeea2192. 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/CH2881700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb19cada9c598b6d696dd8c1d3d5cee50edf339da47776672baa8e30173477fb. 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/CH2881700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69eb7f652255f472446ef44323369cd379c39e14deada3e35dc3ed0143894f6. 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/CH2881700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0081a91d929c2e7a912ebebc2a6f8f43da93993a3a93a19539f6d675f5991f11. 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/CH2881700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513260d43a4ded383c908978ed7e3a863df0d254b203251f55a084937df10051. 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/CH2881700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d2161fa106e928d6065f8207539dd02c01af3a09481002710ae90f2b32442e. 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/CH2881700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c817c21d291186c245c5a9aea98d9a192e6e5624ed75253f4064adb5fcb6c2. 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/CH2881700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7448911b9ddfa1e4f281934453e93623cf791d813a802557321eeac8bc6643a7. 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/CH2881700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b01e9f175b693973a59da110939be1fd8e44d2614ce318244e6cf481455fa6f. 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/CH2881700120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f793b7b654dc7cd57fa28b2201b8a3115884f2e0e99619e47f63b5332d18c4. 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/CH2881700130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeedf1f64c8f9e2c1113cca2b289b9c90d9e451364f959163a2f2a79892a6277. 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/CH2881700140.