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 0x334f9ee823949680b262efedf413d19b1c005c02b79a6b2ae74768e144ffd90c. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4dd28cf-fd48-4771-bc72-8746d2350e32.json and https://artists.proofprofile.net/proofs/artist/c4dd28cf-fd48-4771-bc72-8746d2350e32.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 0x0732e3fb0131ca784d9a7c7f599ea88a765dcfb6e2849b71c1a8260058955377. 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/USLZJ1795955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dab95201bf9d9a7bf68e88496ee1816a547027050493f73c3a5f0b5a3debb60. 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/USLZJ1795958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2e9b97b891ba338f7093668aa42644f3fc80335c54fd92f7a13b58af357d5c. 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/QZ4JJ1720041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b4d8c10c79e7ff60d73770ca544eaab1348254163e19b7b19b11cd157d6a79. 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/QZJRC2234984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea67be6dfa50acd3319db32ceafa2bbd051edc9ef3da82b0d6ea4ca89f129478. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMHN2228455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a1c833b07695fabfde7a0361ca3c706f3a7516909066a172de3a72faf34ba0. 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/QM42K2161187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b61118433af41fd635f5034943e6946132659e69ce74d6bb7382a9e17ef4c07. 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/GBSMU6133438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34cf0b14e3385adeaeecb5b144925ca74fbedb562efb0a0e48704e6ab0a756e. 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/USLZJ1522243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa274656be437f7094641160754fa1b54a1fd708de794a1f262905bc5dddf835e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USLZJ1522244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192f0793fc3f2fee45691cae97f5e44143239c1e82c1a5f4601cd92eff425b0a. 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/GX5MX2333125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea16394553c8a3c6fe0226bd49c92ab41e5991b061e77860668d25f31fca66. 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/GX5MX2361123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b184e63f497611b0d5ccdc7d4c29a154206868a159073c0dc6d07d0a309aa1. 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/GX5MX2353813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe098223307c0e6989b208d05f33c03d42f493cedea2d3fd66ac9f67d60a481f. 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/GX5MX2377029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef5bd53ec78f2ec6fc1314654eb07fc79fe5b960500bec57d6958318d04a10b. 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/GX5MX2305862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43e5527490ef1c378b4b68493a6155bf8dbc74395b16878d566c1764a98265f. 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/GX5MX2315711.
Punch For Corruption, Vol. 2 Amsterdam Special 15'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf76d5b9a9efbf2a0bc1ef51aa0d2af723d7e63692fc25fa394680bbc86482c. 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/CA5KR2162868.
Build It Records: The Collection, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a1c833b07695fabfde7a0361ca3c706f3a7516909066a172de3a72faf34ba0. 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/QM42K2161187.