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 0x24067af262b8819e770c96ec06abe576c81ba174487eedf4cd597944407a5cef. 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/e3aa0140-3a90-40d0-a437-ba1ff1f8645c.json and https://artists.proofprofile.net/proofs/artist/e3aa0140-3a90-40d0-a437-ba1ff1f8645c.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 0xd45636e3e3e9d64832794789d39ac464f15114db82a9c3293cbd4f2c4e65fd28. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:49:21Z), 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/FIECL2201057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba3ffce51d42820fc86ff1f4fc811ac466f73761a21187a6cc98d341848bcbf. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/AUMEV2331096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac7ed7524280932ff1424d413ed829153ca1474dcdc2bdb669f732a0653bb76. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:30Z), 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/AUMEV2354306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330babac84e519b58dd9f548afa1b7df598d8fd11668911d49271e17cf4a71a3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMEV2367323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07288e033b08944b1b690f60bd9e4365cfdcdbf47563225fd98e0f58f44ac826. 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/AUGBT2358228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd2c961c2a8fdc8ce2e3b86bc9a03abac625c79903f70b7da90e4a0dbfaaf53. 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/AUMEV2420902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29684002c02138251efe7e262d4ec6e4222757ff069cfe2ebd91a2c08dd39c4. 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/SGB502454289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c9c3529e2147fd65e8d88e65072de7c3e7ccc2ad7115680a80e55f4b0685d6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USANG2412229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebbc7cebe44404012f8003e7294002ebf0a2b6899979061a447b662d9f7a91d. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/AUGBT2468301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832b56e092495c09687bfaa581f725f5595cf14b1fe6cd0dcfc1deba9345f543. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:41Z), 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/QMFME2466256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874f67f1cc06942d38d5822aea4e3d9c8b5ae08e94f7dd2997a58c5dc323288a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUGBT2496482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba028fd8de43b540b7893fa24695142e6f6cad95f14e167bd1485ec9fa6b9d2. 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/QM3DF2419508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095a3391e6c1d19a74b4569c5d217fca1d0cba748d6f6ff8ef56a7d94bdf1413. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:22:25Z), 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/AUMEV2532009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36ea3d68b86f30a70427d49e40bfda23413a6873e97495d3b07e304c8b6a4b4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AUMEV2542700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0689c78c89108e6d6f9cf7e48d143d4fb699486c84a2c88c8fc16205a6457d84. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:49Z), 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/AUMEV2553748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d02edb71de6376cb9346f3d87b766b17e516211c41b3dd4c3a72728c7af279b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:15Z), 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/AUMEV2599072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d1cf2722ae79bd228950b4fb7883cb692d81b4c01525a8a244794ad4ca5a8a. 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/AUGBT2519600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5db63b2311439d811bfb75ad6820e4f924c2252e470c2938f15ed3751cda844. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:20Z), 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/AUGBT2552471.