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 0x5ad7d85d0b5e86613f09010df53cd73597d388998777f40c74c8547bd322d37d. 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/32ece604-c846-46d5-875f-6ab732516355.json and https://artists.proofprofile.net/proofs/artist/32ece604-c846-46d5-875f-6ab732516355.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 0x489a18e34922a1f06a09c0bd6ef182327bab93133696147c12eecbf269126c58. 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/QMGR32059977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04e42c17d386f8da3c8a09c75ac809979ae53cb2e3803ac4b35b1ac19a6a2a3. 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/QMGR32097522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a10233c3f02231d9f650dd4bbc2a3c4f83560bfa319e92d8f4c002c1c9dfb8a. 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/ZZOPM2238586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59481f4f90d352d5d87ad4ec5c451daae3edf2328e861336b9b361ec1f5b24c9. 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/BK4DA2306914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795b74e78b611b048d5ef892cb1b6502ad5da6238484ca315b9051417ebf6f78. 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/BK4DA2464478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd565f0507817b23e123ded7e91615f58b73fc7933db529d9aaedbf5329be81bf. 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/USUM72221585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c72147b372dc2f4cc9b72099ee7eca882bb1ac5bdfecd03eb2d864a0b12090d. 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/QZNJZ2306330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6ff6e66d292cd51bb9cbfc5fc5ce29d587496893a362eb60eabf3969a11647. 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/CLPP22100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a43c22e6f6a82171ad87f28528c41d6850242b10fcad2a187db762c2a4725e7. 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/UYB282140004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197e01d2c536a04851ea59f076e147d1c4bd8eb88105613d78aefd309623a048. 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/QM4TW2119129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764b7412140877c7160cbca239354051406989013f4053bd61f027a27c51648e. 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/USLD91739311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dc44b579753febc33c034539f4222eb4ee1341b25a4713f91593654d3f108f. 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/CLAA22300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33c218e7ebd32ffcadf02d38f864b4df4d39aabd27c499e904e34b5c88ae3ee. 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/CLEM42100946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b8198d206f62c4064967ec167f844598bc1f6fc3668e8135cd6a34022d8d74. 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/CLAA22300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc746940fab3abbac1c92778344d4198ecd494f34c559f1072d0f9a6ef107c4ab. 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/CLEM42100950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961f0900d2f5b1dc354d77b3b1ca3f3c5907ecda3da7a493439ddb8b54315b86. 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/QZNJY2418765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1381335eb7286d12002541b8ec1d48e515e66315f3c427bd4a2e11908877fe. 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/UYB292394002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61277968b8558318f8cafc5e0566b78dfe13866f1cf7e8f07844b45e97ad3315. 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/TCAHA2309708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a2f9a516f2292f3e6194b82ac38435b601f408f5752870b3427a87a1667aab. 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/QMDA72409077.