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 0x15a0c2706e0874d818f0974af1a3c36890c17939eea53ab0487ddf8c659ea4a2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10ac5d25-535b-4578-83f3-b4f29695fec8.json and https://artists.proofprofile.net/proofs/artist/10ac5d25-535b-4578-83f3-b4f29695fec8.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 0x5dfd9b6d0e226e0790f8e7a96803f834def28a773fd7dcfc0da8cb559487e0a3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN62052053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da0ea37dd8e5554cc749156774d48ab719f2a838699ccfca0f5737389b560c6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN62052054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31feac88fb7bc3b44ccc6486fdf652450b42697602c4029ba3dad01c7d32503d. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/QZHN62052055.
Medley Intro/Toque de Cumbia/la Danza de Los Cholos - live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10777db9f7090eccd1fb416b0a6e792860c42f58fb80e0426ed2765cc3062aae. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:48:51Z), 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/QZNWQ2016203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4a1ffe60abc655b3d030c95b1d518624f5afb55798aec1b9cbce4e55c5a149. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZNWQ2016204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9095f5fd714105fe537f8167bf785273401f35977f1610285a678f4241b2368f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNWQ2016205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b5858b887ab6fd216b76183bd89759d442a798d838b490e452c2ffbb7049de. 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/QZNWQ2016208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d1e2ff5ab1190898f777f3f913414389c7d7e3d730b872a4166aec4373f11. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZNWQ2016209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c31abadf6c2f1d19fc16d7f48530bf0833d9ecbe5094aa34fcf3b72f81b788a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWQ2016210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddff86a719243296b1f8f5a565f54a16a1412c378b0b6a2d9f913dcba247403. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:09:51Z), 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/QZNWQ2016211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d35354a1c1947e7b29f471078d7e4374a2d5aa23c3ce1bbfc0d92952842c9c6. 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/QZNWQ2016213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4d442e7bb431fd20a7e794ffdcae9dcbf412805fccd7148299a26cdd5991e3. 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/QZNWQ2016215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7000df12a303a421e6c439a55b71213beb265f8f8bb2b830e3940bec785f9160. 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/QZK6L2180198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb201b7cff8af55d187f8ba6f28c3bd4a35f03e6cb1c4dc96db4ddf398e3cccc. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZRP42175787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591159ebe653cd142576c15f7332d68b848a16fc30becfcd9da0bcbde1888a6f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM6MZ2203420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2d6d8675f47e078051502e304a8148d977896b9add9bdaab2ed5ef193575ba. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZMER2356266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a7b64fa08d67d311dc50c18d1f0a922e2714a2fcbcb73d649f40d5b5fb0f94. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMZ92523695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022d74c1631f65f2a2045d6796971427f3e18ad159d9ed28dd889f7ac52f487e. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZTB52411717.