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 0xca077f38c4aaf989c6a461cc40eb84794b00f6875e52934ab8425fbdce305f95. 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/374f9094-42b5-49f9-93bf-a24e23891ba6.json and https://artists.proofprofile.net/proofs/artist/374f9094-42b5-49f9-93bf-a24e23891ba6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Judas' Betrayal and the Three Day Burial of a Salted Slug
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 0x3cb5ead3cb00bd6024b4dfa0da49a5c5fe8fdba14ddeb31ef8daa62c4b3053c6. 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/QZAPG1898437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5212fe9e44d57dfe417bc09623d52597c229d0b85fa735f9d790f941c7e94e90. 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/QZAPG1898445.
Sometimes Even the Moonlight Hurt My Eyes
God Is Under the Porch Where the Dog Died
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e455214a2fce5c55daca07101c95c66fe9d4d11d88eb95575bba5ec3aa800d. 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/QM4DW1575921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5246d3af32a60188fe4bf1dccc527eb527ce9cf65a94c9f72266c6efba4a7003. 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/QM4DW1575923.
The Crucifixion of Rapper Extraordinaire Slug Christ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c0083808865813ef9d6936dec383598caf6cfaefbd4ec1943eed85844d218e. 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/UST8K1590993.
Mega Monkey Machine Mother: Galaga Strain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5997562412eb4d74bef4f32baea243e732fac7fd60fda6983d525d7f6a1ec44b. 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/QZ9JZ1718289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbe0d8df468aee36d178eb6974258f77364742752b0fdd212c4d95f9e5e2660. 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/QM4DW1771938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdb6bcbec521633af866af3179599cd6bc7084599d1f8e0e15dfafd0b977070. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QM4DW1771939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038c5c7299b5098d777292cf8032029252da5e2463d2c458dab0ddd5c7a606a6. 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/QMPKX1620729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb05e61fd890aac5e6f1293771df4ab7fa4bbfa0c582a1b23aa860ed8b90a20. 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/QZHNC2504609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde157211c59862c536da0ad69c8bc99c1572a443a3c0cf5d89a024e6e1e46b8. 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/QZES52556623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6832be463aa0543ed2b6a5efec117ce592af3f9ecf860cc3951d7f3992445a. 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/QZDA52577134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae6bc89fa9821556b88a79e2a45c3d497f6469c7c58c899cd2d6b946c1682ed. 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/QZNWQ2570287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acd8bec87e93cd772ee87e521144659fd00d128207c455699e7ff790fb922bf. 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/UKELY2100029.
I Got Depressed Hoes (feat. Slug Christ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acbcb106d310cbed34b05b7954e095551e9031421c1f4d2a527329b7fb08a0c. 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/FR5R00906263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcc4b3ffdbd2477f0a60415c2452dda06d11569207b6b0a91b4ca686668cfc8. 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/GBLFP1591686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc928b938369bee93907e952d7ac5a80b6263f5434dee063a04a15889184005b. 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/QZ5FN1707842.