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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ccad52f51ea19fa7e608d59029e6fdcfa7e3e9c994c490747cb97d4d21ea8e. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/643c657a-69ed-4be5-91eb-9bef2cdb42c6.json and https://artists.proofprofile.net/proofs/artist/643c657a-69ed-4be5-91eb-9bef2cdb42c6.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb83035b1016e0dced1c97157adc0b570cf30a12a412c292a810c2e05cb88263. 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/ZABU61900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b0190e95632afc9e7834aea0de4d0a7ef3945ed259f34f42066c0c3e5f3997. 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/ZABU61900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc0105af83d7b40c30dd37ac6d3aadc56a66ceb58e6f29f93a28541ebf07630. 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/ZABU61900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab38b1fb6577708b7a8bcb940e9c8fd4027ffc9d8e93d64e72b2b2ae447de290. 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/ZABU61900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a9f1c8b8a040cdac4b43566e57f24acf842d6e8a702999f7494fbf33dd0561. 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/ZABU61900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179c0d9b1c5d0c1eb62474b978476c50dbd3e7e5ab66a48d08fda5b626c9b6d2. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ZABU61900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e131e8b540311882df3793ba414de048b03b6444034fe2b690e2442c919c76. 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/ZABU61700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114fd55119b16e1467661a249e7d159be03afca7fe42965f38c08738de9fb156. 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/ZABU61900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510ddc2f74c1dbf9d032f0f42127a648555b85d7daee7f13e635f7bbbad90012. 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/ZABU61900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d1f485cb80c2a29310264fb255adf7b959fbb8822b7d1416a4f52e0e233e4d. 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/ZABU61900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c25e61009e1e22cf113936aa90dfb41e55fb69c3ab5c7641977daa85dfbec0. 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/ZABU61800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928401ac9789308dbce5a114a666407ff9976964f95c4892dc22f0c5c78f6973. 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/ZABU61900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d675204344abb03795351c82ca0cb225ee82779f5138a92de61debcbe029227. 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/ZABU61900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf802f2b446814d313adf1cbc018f1ad07295854ac3f366a1c0a4e0dacde35c. 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/ZABU61900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fb3f0802c7ec8eb197b7f3c81c90d76d24abf5af4277200a3c21b2676f9c3b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:25:38Z), 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/ZABU61900010.
Don't Tell Mom The Babysitter's Dead (Music From The Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb607c9b3d838883260cddb2fd8850f40ce0142df8bf6009f5b1b28e27074e446. 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/CAE150800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e76dca4cc8f621bab83fd473c6b1579f981c6cc42a50790d47ce6171e09035f. 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/USWB11901031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf48220ac45e4bdb9a77925a20e6c2ceca825296604f7bfcf6a12cfcd84887b. 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/USTV19000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324c9b509c45b3d805ea3a3c8afada6504024a5b9f6ce8a91a31d846688b5c8c. 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/USRE11100537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0571b5b89165223310a997a034b9d647b36e8eac0895864dd49e10d083479482. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:55:29Z), 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/USWB11102228.