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 0x17a9efe6a9808025ff3f6202f361c132e22ac26d3836ecb7f0d50711f8551547. 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/539ed9ab-c3d4-4f91-a23c-8fd0d2822308.json and https://artists.proofprofile.net/proofs/artist/539ed9ab-c3d4-4f91-a23c-8fd0d2822308.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 0x8b2d4955c501a4f81816f1b8107eeec45f219e99741a508a83ea19a1da246715. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR2X41409307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65603e459f149e7d3f3845dd099344839e450a2136dc34f83202048221d037d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR2X41409308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207b747ca57f6dbfdfa3124b53322fee39f3cb38b585b9d719ccccb76f8b713e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR2X41409312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccebe379ab8d8a9842675cd595d464ed225079f10f41d96098cfaae33ac3d79. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR2X41414289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd859bec2d5e7ad4af43a0b099db5f6b956ac0f23a97accb9819a79f81d86fa6f. 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/FR2X41414292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e82e6362251397248b3f74010573b5817a440e9a3b5aee1ce77f6acee003ca1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FR10S1492153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c89c7e7879b3da7089ee02681a8d8af8dc785a67498668d1cc85c89848d6ac. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR10S1492156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78159b3e92a7c1caff063b3a0fe204263ab0bf11e29acbc2de3f6c53bcde2cb4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R1665776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dc70affc47e2ce7dc92b17485237ee44a12fe8e5af768f44498741fd1db96d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR59R1700903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cf59695c1225a4b095887b98364e9ead4bea9ba0c3e22da312463c46a4d2c7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR59R1700910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbdbe694a35c4d538f6b305ae86069d3df14ba6a2eee949527eaa39f414c657. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:37:31Z), 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/US3DF1435361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f75a6a6ce86a5bd85c4aebe55ca63e6fa9c2de356fe5d17dcf76346d8bb3c8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:36:48Z), 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/US3DF1435368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706446942947f4ce6534b7550526db0dccfb6d5c28e432748f90d29cb8edf6d0. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/US3DF1435371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120f85373610ffa6512242d8ec9a8df05ede7fe4c5e95066a071e393fc15bea3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US3DF1435375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12565dd8ac98d3342a1188ad2403c641bbdbb63717de5184da8e2403351e1f3a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QM6DC1520977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ae954f32bde394a6305cd44d99121c103c0e9928551f86142e70dd5092c0cc. 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/QM6DC1520981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a71893ed3e1ba8075b06272e78b0fb07a9969b60f5dcf7a6f9bad9a34f0160. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM6DC1520984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bcf284b3c141ecb4fbc45e1b74a6fe7c2e06ca30458595dd921b72851af875. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6DC1520985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18edfe108a2ab5cc6bff9db86c95635fe6ce297eeec84ea4dea3e431a84709c3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR2X42167615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1807fb76f03288f6a40bafad73364e268a250d7f430683870f5bace656859115. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA0S2475108.