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 0xd003c4df1551d4f8877b05c6f04ea94c2853d3e2eec24c39869c6658e3426af2. 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/e35f2268-fc04-494a-a5c4-347e3817f268.json and https://artists.proofprofile.net/proofs/artist/e35f2268-fc04-494a-a5c4-347e3817f268.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 0x0b7e80813f9ac95c8ffaecbe87e4a8bb2fcc6e21c88ef870403ad77f68bb074e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USLNV8000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe717032e59bbebc272b76832f9d85d5e44161c5e9686c2c4d5fe2aa9af914881. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USLNV8000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574adc3f1e7463734018dba1be5c747ecd6b144971eeee84a2f927db0b5b7fef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR6V81317888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb317f4c1d6e9fcd22342c40b1fd449e6fb697ad1cf36751549835e2ea170dcc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR6V81317889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d19cedabe73e7144310bfbdcd5a14c5aa72569f12322579ef89455b9b1bc58. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR6V81317890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be4afef7417bbcc78ada3acd2b8788092ab2d28bc65e302042688dd25fc51a3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR6V81317891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80f5dc8ec177beeb1c8403a29ffa66dffedb1061b298611740342609e92f11e. 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/FR6V81317892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c65a9e1c5ae0caca312ac9e391474e61458f5ab1e415db69dc856121940af9. 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/FR6V81317893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8830f9448044e4350130598c67e29cdd78f7671716c698e0c311b55529c533c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FR6V81317894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb97a0cf60fcdfa19cf2ce5d89c215dcb0381ebcd5e8c554ddc9dab1db6d986. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM81315304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79319bf47cd9eff21fc507ee82c28a1b3e978f5b9272e4d67129c53de54fb775. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM81315306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3d7242b31a94201011f37f319019b443e29b9f462e8665f1a35ad867b14ea4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM81315308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f804617265a4e8c0771e48705bb40d64dfe0a9b9155445a9e0b0455fbf0e1aa. 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/USHM81315310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734418d81d05a8fafc9462261c3175a365ea36bafa056f98744b684dd6adc0f8. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USHM81315312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9940cec335d5131be350b0c5b15e25b80b861a9527fbf2bd783a9020781710. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM81315313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94a1f5f654951bdd4b52b0a3df52e7ad60f522a4b4116ab100847b084d19231. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR10S1558890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206be25555ea580ef2c0cdf558faf3a42db95dd69a830f6843f5c256eb6d1c90. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S1558891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14fb034c912dc048ce16c21e3029417ea10770331056a9db4e1dbbed7e0e3cc. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:33:12Z), 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/FR10S1558892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fbcb2af9904cc9404f27b2fada7f7acf9557da15eb858d6526fa053c0f56af. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:57:22Z), 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/FR10S1558893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ffe18728fec1efeffed68d03290b340cae339d74fbb34d0b09f1f47fad9ae6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:46:41Z), 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/FR10S1558894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff66649692cc41067cd702611ad84e3599cb6b7d8d6eba2ad0af0cd9cbdbae29. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCACO1646007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454ce40c8d64db8d4bff16188b98bb120bd11a0a6bb1a5b595dabef2be4dcf58. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCACO1646009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ae0ef24c44fce2df582bddf37ccfa541845bc4e67b104dcc39abaf6a714ee6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCACO1646013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd022e565184f9ab2d7c7806045bcb86ce921ee2caca52a5ff027169bc4eee7d0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCACO1646014.