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 0xe7d763a7b7a1ce0f2c8aebf6960e8382a31506fbf33d8388c8935f79b36f62b6. 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/cb88851d-d14b-4410-8fac-76aea802a794.json and https://artists.proofprofile.net/proofs/artist/cb88851d-d14b-4410-8fac-76aea802a794.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 0xf81f68d373552fcffa6e502f90d58fc07ff7a6441da9fd7efcf70bb9585cb02a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM80607861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe8ecb7f8e253afc49cec2b439858a34c6e4040f9d1bb6fb978420582f160b1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM80607880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6d3f1d5939148eeeb6176f90b176298204d889927f47fad4920df81de7dacc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM80607884.
Joseph Smith The Prophet: Live At Abravanel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e8205e926c076f994bdf861631a91b10e57acf96232e41ddcc2ea5dfb34b66. 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/USCGH1182179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b34b45eec06416059da4c8a03209e10a8b9ca98a413afef216505deaceca7c. 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/USCGH1182161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2d6d2073435211fea2128fd6c166f434561d43679dfc3686800074fed4c02e. 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/USCGH1182162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc31865387cfc8841f50faadbaa0cea86580ae2a7ba4dea5e583430785d1f15. 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/USCGH1182180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ef1b4740107571878d149cb31cca2f45f0ff5f8fb69544dc8bcf4972c3d0a7. 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/USCGH1182181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce9531b49a997aaf3e3f4d605767494299a1cc08086b98b8dca7bc5c3af75cb. 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/USCGH1182163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418f557aa8babfdbdc207ba0a03910845d352cedcec15035bfd700c48ec97066. 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/USCGH1182164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8d47d15c70f1a14c6fac3356d6ccf2a7b929a5bc5e69d6fb2cc72e531a5f44. 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/USCGH1182182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2fb85d58facb4d5e6a7e453fc4f78d237e214297e86bbcd2a843df39e43687. 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/USCGH1182183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb8d13d7c3406609059bfcb59e5ccae608fb2679eca5c485be5fe6bda49b284. 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/USCGH1182165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39b9e941becdbd65b0ec1b41b4f473a0692e31c37c20a1bc6737bbdff25665d. 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/USCGH1182166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c81dccc27e4a8a31ff0397940efab5499a4559fb01252c60c8e26cdc01f888. 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/USCGH1182184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5b028c1f1e7d62d397b3959afcb64d20ee1b766ce42366646d9189bd600a3c. 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/USCGH1182167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395c26244b269ad2effc79a570e176758dbdc1bc2d86b72c0cd7adfd066feb9e. 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/USCGH1182185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310c4f1fdbff61a678dc5d2417c73438526c434d534ba387cb5c9e6d580136fd. 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/USCGH1182168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bc81d1cfc5858a26bf455e72ef7c844b8888f26554192d1b7e799cc47ec1b7. 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/USCGH1182169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6735ca2280976d04219a1036df86c8e490f9be1cd742680bf6795bd6ca0f4569. 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/USCGH1182170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c549baecc735a7f5a11163aefd42aa2487cb9406dc00bd047c53eed978a5f9. 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/USCGH1182171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cecad244e33eeda78d8415ea23cb44b8e425b00700195f9ca4f2d3c80883c5. 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/USCGH1182172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1a11c7363bbe6a5da9bad2eef63f07712df4c7ff6e27629639592221d759f5. 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/USCGH1182173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f066aaaec39a00c6976f248b7171b2789f323272d2804ae89e54469fd5058e2. 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/USCGH1182174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86533f2437fbf9ac1a9b96929794974d3d24ff033f5d34ec2ad4172c9dc73db4. 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/USCGH1182175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03034c027cd54d37561186b00f352bdcc2df6d01c62bcca02b2f28020d86b4a0. 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/USCGH1182176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99e091065ea4222ec7670ca7cabdd7549629b3f1ba11320e960a5c5383667c7. 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/USCGH1182177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aca4b925d97dc69c0d8f96b36bf2f726d3751f3a63a59bc2c9c527d84021eb. 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/USCGH1182178.
Lamb of God: The Concert Film (The Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9694240a6157a8875decff34c1bf062461fbf9d46b87de4efe2b663ab91a8763. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFL2153886.