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 0x282dad808c94b9f7fb38c64949e02264b22f34e772ef7f34c05483990980b6f9. 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/89ad6965-a5ef-4439-ba39-a77209b5d0fb.json and https://artists.proofprofile.net/proofs/artist/89ad6965-a5ef-4439-ba39-a77209b5d0fb.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 0x03df078ea1ac39f7b49a8a1e0e17eb9ba76b32c385c40fcc81bd30a4a8f5fc14. 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/ESA012046048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c8ec3244445ecb2e8e2a353dcb74d016647ecb30a7ba384761e82956dbc550. 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/ESA012046049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf9881b23a127645504c08da0b3b23180ce7a4080706d234eab76f3fbf7bc9b. 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/ESA012046046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccee00ce234d1a13ba8c261c4c99d1042c3849b7e299d0cafb4f3c6c0060c30. 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/ESA012046053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c547810bd087c5473efdbd7ce6c1d9551da689e091149ab8bae9f3c70a8b58. 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/ESA012046047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aac37f6df6922d28cef077ff1757ecde45aa58270f3d45cb9bf240e67cebbe1. 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/ESA012046050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0bc3389aad91a2a7e0fea7ff5a4dcd7913fa6024307b52ede1752c8b8c492c. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ESA012046051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1203598437849418ec6b9c8e1a17747d641d59bb1c1a8b9d3a699daad9d1f20f. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ESA012046052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf7c4d3ab471c823ff065919d0527b6e11204d6227bc77f59d4605195bde3a2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ESA012046054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d843c7563dc6ce0fe46aa64720bb647a7aa70bb050bf0ce938b259db9c5253. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ESA012046055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafad942b7b3208afce222ef3857d48c5517d5e4e4f0a65cd8e8f9ba64094e16a. 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/ES42G1600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7b1fe81899372c8dcd57753c7c5aba1eca1c36b8badfb846729c5b4dc52a57. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/ES42G1400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4e3a3cee1154a3b7a1372152d73d922cae121b10fb09bee053d4cc89e701c9. 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/ES42G1400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d470a35c5789a6b936db588c0c769536902ab2d87ec64be73fb94821566ad28. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES42G1400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f42e923f7f9aacf841f9d5678d852c7c38cf434f813958b9ddbcc103aa8a8b2. 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/QZGLS2229389.
Under the Bridge - Red Hot Chili Peppers Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a391c3cb8a1f063ebb430b527113644c2c30205bebeac80cce5ff6a5e386df. 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/QZHZ52160761.