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 0xe10bfa91d702e8b07f5cf62bb688fd195c70aca700a20956a46a10dc363b9b32. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27a5cab3-6d7e-48b4-b985-ab774667a9ab.json and https://artists.proofprofile.net/proofs/artist/27a5cab3-6d7e-48b4-b985-ab774667a9ab.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 0x54cbb3d411b3028f605ae6b53dad6156b42606f046005f0dfdfeafcd416ab34e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA5KR1962212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a872ad5d46586128a6c6798d76000db317b780875db69d381b953d057960ed. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZHZ32223224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42931cb34d74aae92f291adc241ba0076e3cdcb4a77cfeb4075362b0eb78f954. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:13:55Z), 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/CA5KR2233520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d706cd41bc7a2d1ce82aa670326d0adf128056b5c08bf1330847854e844166. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CA5KR2233525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1f7c9d4db37d75ba6cea50dfe25f2c81b87dae3722463587aa47f3a3594e34. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:25:54Z), 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/CA5KR2233526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ecbfed40a9aa2e4f13dedf8514feb1109299e1771e461971240fd04e3d8dac. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CA5KR2233527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58f658faed6f5d38617ad710e4579b839ac79a6ca01b26979ba83eed28c5380. 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/CA5KR2233529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf36449e14600ca7b9fa2cd763c2eaa112f214b53d8ae606d7ee3bb8dc796aa. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CA5KR2233530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e645a3dd6b8a85dad5496c105a10504df95e8b7d7ea39cc69b64a5b3f341edf. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/CA5KR2233531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa205522f05f71451d938d8dee61c15d4366fd504790994715b3b7203f10ce107. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CA5KR2233532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e028fa1f32b6013c6330a3004979b772951f3d7501ce796d9e1affbeb6a4bb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:26Z), 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/CA5KR2233534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203fb676a9ec416a22d8924c268f0ae56eb30a5b8e77373d4493b08d9c3101ea. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/CA5KR2233538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7499004d1a54dc7557c91ec83606ee9a47582115354cc3c2298a4d37f1a677. 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/CA5KR2233539.
Desde la Cong. Primero de Mayo (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e9dbe0f402df3b9fc529e3b2952fd96788ca4e97cadb8c5a9289bef178465d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHZ62240907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce6c9a318e3ca0f2fab12f73c5760744b0b747810d28cf831a7985abac5e390. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHZ62240911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f0676cb6c370739330e568ac27b4426e25b77d9f95711a2caf7276fdaa9694. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHZ62240912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab86714791773b62184104353d356d032ae9752fc2aeb6f39b2dc1867f03d94c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZW9L2241625.
Con el Triunfo en la Mano Desde Pueblo Viejo, Ver. (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac03600af18cef279bec8ae920561abba197634229ab6c1c225a2a04fb819e4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZGLM2343663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b45130932282785833b6a0a8b3008e87ca71c43f54a90e33c5ae919a00dfd90. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:14Z), 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/QZGLM2343667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962a6d0d70b06a029e69b195bbadb018459aa6e2d8a93eaeacf4c2b807c12c55. 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/QZGLM2343668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481200b319e282e439599e9f58ee95f37849537fd7f0a6261fe9ae82b5002b6a. 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/QZNJY2375929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e56547fb7726d43e2ddf15e6d8fcf72295e063eba9f19adc24552bab2292a5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJY2375930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a1faabbc857e80561af3847b16416dfc9c76cb29b2b84f813de2ea243096c3. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZNJY2375935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b937a06bcd3c00495639ab04a6a6cc7acf88520d6b8698c9e1156516e697ec. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:30:55Z), 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/QZNJY2375938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4f68d275eec1a0b4de0e43a8835fdcd64c200a2a959cab6893f408cfab0769. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZW9M2305668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6228a476510d104edaeaa9b1f35af0237e51924aef549534a9acb834675adfd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZW9M2305674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa2aa5ef9da5c2f8e3fa8ba15b93b3d9096efc6d24419c53de64dec2749d23. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZW9M2305676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf059579b62a542ed32e4ec21c225c1cf24b0ebc3e20c3e5d74061bca3962054f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:00:09Z), 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/QZW9M2405964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7bdd31b25f545daed13e82b3a30cf9afd7b127adacfc685f138f52fab86c28. 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/QZW9M2405965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17353a55c6657c1aad191b5b96808c3aa02fbe07cd7783c28e67fdae8211bc74. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZW9M2405967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a027bc7829f6c969efebd12e977d568e8771aa7ba3d576e7e01886cee74a6cb. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZGLM2514546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc970478c664a360300417ce953ed7107eb554cdb630fdd2c4b68eeb36fa57b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZGLM2514547.