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 0x07b3f7651f32b6e836534d712fc3ffd9c13a9a0cbcfaa24010e88995fb8e5cbf. 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/6cb99631-68a7-4b10-bd87-24b5859b92ec.json and https://artists.proofprofile.net/proofs/artist/6cb99631-68a7-4b10-bd87-24b5859b92ec.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 0x01f8ea116855d112417668ee31153c07fab096179241c3a7d53d46bbb8687c32. 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/USCGJ2356408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde6b0375c9942c5a691e1c5e17cb647a0173e444830e49d4f574e90e04a0f8e. 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/USCGJ2356409.
Grimace (feat. Jamie Madrox) - Marauders Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb842e3644fa16c641f6f1254b054a9a45955a6750bc6cf26abacbc9a431584d8. 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/USCGJ2356410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d49e82cf5b511994f6f04d2f1dff96251063139f4332e8cccd051d1560e6e76. 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/USCGJ2356411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abaee829f6d09578a9411970a5016ece4018d3b6c8b1fa90aa7d2c0eb7e809c. 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/USCGJ2356412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c17cc94d6b679f03d3ca56d366897acdc9f9f085e144955c40af1096a020de. 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/USCGJ2356413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6be04b7815346e4efc9173d95fce93374600a26210977654e686e176a65c61. 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/USCGJ2356414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7551aa1eab774beff5f9c28b9f29111bc3dcccb607d3b2b9cfb8094e364c2c75. 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/USCGJ2356415.
Blood of the Heartless (feat. Kung Fu Vampire, Lo Key, Mr. Grey & xshy361x)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60013ec32d14126bba7a2880ba788fc02f6450c32c46a9500c86c1722f9cdb0a. 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/USCGJ2356416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa655251d0e5873e40c3f5abea2ec3965708eb5756104aec2a0c09a4e95ce026e. 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/USCGJ2356417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccc26adc53803d080743dafde5863e57350cda3a07ba6e80b8434b7cd47b820. 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/USCGJ2356418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fe260c3ee139b11e28fb5649682fba600d67d045fff3f533c19150573440bf. 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/USCGJ2356419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcf55c2379cd997d945b8d2111936a1c392a68930e81196316bd9080fba865b. 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/USCGJ2356420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886f05b092b7b017f3e3ff9b28f00c357970201470362a83678e8f9df106a58c. 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/USCGJ2356421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10ec4be39060c9cfd85d1e4f3558bcb2f1d95cad21db273b6ce97ded496784a. 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/USL4Q2076107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e500da59857671c04b0ed2eeab3f762952f80632368e993fae15f136da98767. 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/QZEQU2400526.