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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69376bcb8da82592fa1b9c1eb5b4b8cf3558eec2195b414af141c5bfaec5acf. 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/c467673e-eaa0-456a-a61a-8fe5e23e248d.json and https://artists.proofprofile.net/proofs/artist/c467673e-eaa0-456a-a61a-8fe5e23e248d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146db559dcabc8a9df0f660e00321eadea1fdccb2873e1e8498dc50cb837a341. 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/GBEKZ0300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164accf79310de76ce90b2f78dbc9ddd411813b5a32412c65d584b9d7646452d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBEKZ0300203.
Land Of My Fathers: Timeless Welsh Classics From The Land Of Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164accf79310de76ce90b2f78dbc9ddd411813b5a32412c65d584b9d7646452d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBEKZ0300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146db559dcabc8a9df0f660e00321eadea1fdccb2873e1e8498dc50cb837a341. 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/GBEKZ0300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc94094deb2399ba627c2f6a099fbcde1befbd07ad387f35706887113d3c3734. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBEKZ0300199.
Handel: "Lascia ch'io pianga" (From Rinaldo), HWV 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4bdbb1f08ac3133cdc8961f0efcc578eaaa10cbfd96182d7ed3227a89ecdd3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBEKZ0400001.
Rutter: The Lord Is My Shepherd (From "Requiem")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51369eeb72fcd198dc615442aa7aa71f197182390913f914323b7bfc066e4dd. 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/GBEKZ0300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a2d51be9f1d253beaa4ea004ca178f4795d3b9dd6fd61c216b258d6bab626e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBEKZ0300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc94094deb2399ba627c2f6a099fbcde1befbd07ad387f35706887113d3c3734. 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/GBEKZ0300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591f2e942fa4f1127f67dba64b82fcf0129d5f2217cf07f1aa04105ff320190c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBEKZ0300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a2d51be9f1d253beaa4ea004ca178f4795d3b9dd6fd61c216b258d6bab626e. 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/GBEKZ0300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591f2e942fa4f1127f67dba64b82fcf0129d5f2217cf07f1aa04105ff320190c. 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/GBEKZ0300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7691b54f671fb21805bc92b27e47a6563f276172dc9d56b8cec4e0949897ef9a. 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/GBEKZ0300200.
The Lord Is My Shepherd (From "Requiem")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51369eeb72fcd198dc615442aa7aa71f197182390913f914323b7bfc066e4dd. 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/GBEKZ0300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164accf79310de76ce90b2f78dbc9ddd411813b5a32412c65d584b9d7646452d. 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/GBEKZ0300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc94094deb2399ba627c2f6a099fbcde1befbd07ad387f35706887113d3c3734. 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/GBEKZ0300199.