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 0x701bf5c26bf02254bea02a54b22128140ce93d9ee61367946894ec4bab235031. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/317d5eb0-182b-470b-9f5c-e1501d8869ba.json and https://artists.proofprofile.net/proofs/artist/317d5eb0-182b-470b-9f5c-e1501d8869ba.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 0xf01b57edd48fdfd7f04fbd137131b5d4ab8ac8cc38a71dcd7d117c3e89b43e08. 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/FR10S2232368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a72b03950f4e2ddf5e808446a9c1957cab0646bd959f592c6666152c0ca2da. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FR96X2238803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eed3b6aa9155387606752fca08d075e71233fd36e2d1457d1a0783a5d6369bc. 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/CH7812233516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511ca75bb1f5a2fad398fb7bec322269739859447ebbdffe8d4f1b510f2c9db5. 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/CH7812236565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe936cf0e0a746907d51bbeb8edb4d2701945c4ec11f8e1cda320e1b1a45c99d5. 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/CH7812238251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bfa38c9c3e7eddcd86e054f5a59c8ed7d17d38f7e65708e7ba65428b6bd579. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CH7812342547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9eabe35a7b03e59f4b50a72757a6e31ec696928e2dabe46b1727d8d90cd8b6. 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/CH7812344137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd406e55d3fbad08644d35b0f81dd9a74c5edaa4351198c0be813ec701ee0aee4. 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/CH7812347294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ccaa6fdfaa9df5de694652ab3c128db20c3f459bd9375aeae796ea12a974b6. 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/CH7812349784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eb120cf075ae55f76cbe25af47e1a404578bb27181ce252afc73df050559ca. 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/CH7812349175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9eabe35a7b03e59f4b50a72757a6e31ec696928e2dabe46b1727d8d90cd8b6. 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/CH7812344137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd406e55d3fbad08644d35b0f81dd9a74c5edaa4351198c0be813ec701ee0aee4. 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/CH7812347294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bfa38c9c3e7eddcd86e054f5a59c8ed7d17d38f7e65708e7ba65428b6bd579. 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/CH7812342547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511ca75bb1f5a2fad398fb7bec322269739859447ebbdffe8d4f1b510f2c9db5. 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/CH7812236565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe936cf0e0a746907d51bbeb8edb4d2701945c4ec11f8e1cda320e1b1a45c99d5. 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/CH7812238251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eed3b6aa9155387606752fca08d075e71233fd36e2d1457d1a0783a5d6369bc. 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/CH7812233516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb539341e866648cc719fe63eec4f166c606237149ecc70c0ad9e72632cfc3e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH7812349785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bde72c7392ac19662fd77b70910532dc881ab0561bc0b11ae5674552e61848a. 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/CH7812352643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fd28344f655e4028fdd4efb6a916a8cfea55210a9fe84a6c702ee32031deff. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CH7812357646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5d6f7e8cb51b861b1e6fe31c39418edc110b9074117107e02e825dbbebc9e5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CH7812407429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd220c2ddf6909535a113a1d1f142ffcbadec3c2a6c014074a532a3d99659b5e8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CH7812407442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2dd1ef7959ce551bbca8966311246fdcb012f67cee68e44757764364222aaa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH7812407445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32776eca445c8747055091ba47a6dfba23263e1427d51c08ac92340d173253b3. 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/CH7812407446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb89440cc71797063b8ffe2df3f5ddb4a81da28cb156ec4a89f8e90fb37a56d7. 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/DECE72203606.