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 0x3d89b8a6dd1ad10cff24e1e5bf61215b68962b3d05ba0c28a0dd5d41801f2193. 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/e79baa63-63d1-42ef-aa49-947077c82a82.json and https://artists.proofprofile.net/proofs/artist/e79baa63-63d1-42ef-aa49-947077c82a82.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 0x244be48fa4bb8b4aca0a53976bb117ff532052eee4c51eccedcfef425af7c9d5. 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/DEZF82300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e1ab320d4260cf9d55ac87a130699d9867ecbc360d62f1069f5dcd93440f34. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEE352412659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b03eab78de947fef4b64599a9a1bfec674b7a94bfd58a4af416dbb9f166b77a. 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/DEAK81900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48391c5af2a41373bcd5faf1e206fc1eed5bfb216ee8bb75e9a6d0d14536efc5. 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/DEAK81900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b83f8a473ac84c7a1a0b156000b81c121dd043f24a705b45d35e34f34aeb09. 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/DEAK81900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c358334f7916b26ba064387245c55b3dcbd75e0adb03466f011f068be0f41ef. 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/DEAK81900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc6816fd32cc9994f439e728de03a5e915b9d5b066cb2bbb7faecbbe047407b. 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/DEAK81900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe404a7d9e16f5d30cc69020763546d5e7516b0a2e9b801b07a6c838f6f13dbd8. 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/DEAK81900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af81c66389e0d6440dae69f426d6b94fe87214261316ff78cb4c38e74a716c. 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/DEAK81900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011db59070445d80eeb08b3a3a529c932e996db6b88d29ec76ae893df55fafa1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEAK81900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3247210af8aa5a34651e886eb1a7af2c92553c1fce9d29a4dd3e42bd93e773. 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/DEAK81900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4d2c6e7761f7c306146f7e9aea21bb7b0f6162b721fd08b8bc8bc1fe9fb4d0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEAK81900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568d0aa93cc10f8a8fcdc8e3fb120ad2eb97f53ed35124c211358eecaa3ad5ec. 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/DEAK81900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ed8473cc544a649905ec21d4c21caa80e85d2a1785e2d885afc55d7571c83b. 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/DEAK81900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f900b67275d06b06d1beaede5e355113fbab47e6aa17aee4da6fd07847ddb0. 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/DEAK81900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e1ab320d4260cf9d55ac87a130699d9867ecbc360d62f1069f5dcd93440f34. 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/DEE352412659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599ca22499ed927be4f0898dcb9285c1b37df0d8e604b9737c79f5409e327ca0. 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/DEAK81700004.