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 0x08f17156d67d3e6f16c3b86296665b3b33e1ef1e6b31cb8909f10b51b59b59fb. 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/52e38f70-ef41-4d87-9873-553a5e986c3a.json and https://artists.proofprofile.net/proofs/artist/52e38f70-ef41-4d87-9873-553a5e986c3a.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 0x0e75dcb063e52ca6f74eef063e68719b0710dfdffa9cbaf96f1875899b3dca56. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYX1947192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838bea6d2b4ef68a7e1dde1cad1513d92bbb657ae162476341f1ca54b2162556. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USFP72177002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef7bbc367589b91d1e14c5afdeeb9152110cd1d636449d2e294ab5b80580af5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:20:31Z), 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/USFP72177001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbecc8db5c47761ae9a22bb85274d7a8b84356985e010922be0f3cb42d391357. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USFP72177004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34700d4dbebc406451dcd92e097eff6268cbea194887d3babd00cc7da961cdb1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USFP72177005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56dae9f9b133ec3e108a51d8c1c1417ef0d5070117e7713d2249d74fdb9f264. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USFP72177006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f5126edd0f8842fe871f0c114d6e027d11409b4e8f7d9350c6841dcf31dcb5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USFP72177007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dba0c34bc8d4130ae6141f24bbfd4745086d48d5a0bb330379fa2b2a2eb553. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:23:33Z), 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/USFP72177009.
A Color of the Sky (Jefre Cantu-Ledesma Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4c1b077e42f1bffe6d784cefbc4182d9a039cc37444ad79eed3be59cb387d1. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBRKQ2410085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b902b0fc255a174573fd28d5c206688c3c904a33ba029811a2d6c0cbddadea. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBRKQ2410086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee307fbb9c215507cf3249d6f0cdad0db39608fe51b8cb9d0d92e22ecb618c9a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USLZJ2494334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe66b930ef38429f8244c216dce743eeff4178eb47b6be5ec82bc39f9511ef8. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USLZJ2429580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e2d84942999ef30d4da084b5b9b140dd5da28ab3940d9a8d5ab9aefafb91c8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBRKQ2410105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3caa10ea1153953d5d98d57923c85c1d2d84ee5eeca72e856610b17d67b2056. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2B2404167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3caa10ea1153953d5d98d57923c85c1d2d84ee5eeca72e856610b17d67b2056. 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/USA2B2404167.