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 0xb8a15e281ad10a611496888330e07debcfa8f1943d700927e7226060910723fe. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b161fc00-4112-48a4-b55a-12b50dfcb0e4.json and https://artists.proofprofile.net/proofs/artist/b161fc00-4112-48a4-b55a-12b50dfcb0e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xf8406c62d9ed8ed0b604e221e8f63cbea31a2dcd4a1afcaa9222d3d111bf8ae1. 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/HKG731766656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a94a316b10bcb5f170ae305eb4af7e0c376f391fd371f052aaacc68bc75971. 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/HKG731766658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125344f24315cf12f2fc54c11e1972e6023aa1eb2df191303b764be1f00be1b2. 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/HKG731766662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907e88141d73fc84ca0d6598427b107a325ee2c17dbadc9ef8b9adf0bd74ee14. 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/HKG731766660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bfd90453e3d307f9580b1f0c32f9672ee8381e2fff40cc0daef8ae8d9c5b84. 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/HKG731766664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f92fd328e262e66146b2c1087464abb0917060c5be13a224dac1a011ecadb8. 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/HKG731766666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702394044a6479ff960e65ae9869de2ceb36b09f33e4d25cb8151ba14bfa5057. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG731766668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31678d8c5d21a83f4c6e0eda1b242ae67457b3d2329e280ca4718d7f412dded2. 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/HKG731766670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7830e471902c0418966681a720388125f1d6d2d4db3460d57022087f0885af87. 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/HKG731766672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a1e2bd21aa44d53c8b8b4f7c62e4c6fe9e5952c1e2971f2c0252341ada72e4. 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/HKG731766674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99acd9161826d1245081d205bc7d662af3a4bd11573428f633fba67f34c18e8c. 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/HKG731766676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef19c71c070acd3bfc799999d9ce9a1c4f71c701b659e5fbbe2c1167b015cd4b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG731766657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447fe2bb4ec2dccb572084801f5df519f73b09cf5af38e19a7b9bced448b040d. 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/HKG731766659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf6a68b695095af2cd391b24a9cd0a54bdde2a683bc6022f3d050b7bd475dd9. 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/HKG731766663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3048067a988217e447cf19e2aa88e2793da63beb7ed696549576fb5acec715d3. 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/HKG731766661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7938c06699064a398b4fb6b25a859d8a87ec49238d331b75f12e302e7557cb3c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG731766665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf67638de77a569570fadc05643ae22561d96a949a6a5d093867a0bee84a91a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG731766667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0941bbd6443e83b3c9133b95cd7bd7850ea22f7ee8eb6bec63578d4aa4788b36. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG731766669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb3695df4ba6d308db4bff6b19c8fff821ea64e6fceaaab2d767a305237ef96. 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/HKG731766671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c9a17f0f4f50172bf6b29d54a6c40862c7940f700150d7c37168dc6d7418ec. 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/HKG731766673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f20759457d656e4056523ba71471d85d75f25253fe3eb2dac05cce32f7640a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG731766675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff26b4978bfa240937265972ce63dcb8e5d5be62622ad03f4bb31a12005c6b5. 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/HKG731766677.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551e4eb5531ea5d8f52ebb846762b71706300d2b79fe00d9cef8134a35834af0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKD012221274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc874660cf06b6aff3f4748391f311ef7213271e6f5e75e270cb93dcfe8f049aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKD012221281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf158e97336cd51675ab9b446b2a6ca6a53d247ac2adfe2212b15a9d6f2b47ec1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKD012221280.