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 0xe8b3f456f5a2b35cea0281ef12d892473927a7b30779337043a76e7682cc2336. 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/04b375a8-4973-4407-9b88-6c12b7a59e1c.json and https://artists.proofprofile.net/proofs/artist/04b375a8-4973-4407-9b88-6c12b7a59e1c.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 0x448694c06a689185f2d893ba413c0e515a8607c91ecd9eef0fcaabc56f168f28. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDQH2364053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f98f5b17c339c2d3653d2f89ae1d8e87ba0e22c9b2e74b71790ae4b81b3517a. 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/QZDQH2364056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e06702758117119bf5fd67b2543d24a185ce40491460cceaaf2269a827b461. 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/QZDQH2364057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eac0f281e8c7fe44bab9bddd5bdfd30cd9816933cc610e991cf7e503f77ec3d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDQH2364058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354e2624601dea1beb5ddf90212e9bfa8cbfb8e3016a1b916ee082532bc00b23. 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/QZDQH2364059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a76e7511b60bb030fa401f1906c737c92d4a722450bbfd8acc89a051d5b3b5. 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/QZDQH2364061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979034e14d6c4c27777af014ca26a848d8997489241f9c49bfbe168d9208bdf7. 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/QZDQH2364065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce6bb305bf8858428291b05857c971a49e09ac6abe3e2e055685e718afed3dc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZDQH2364066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73100e30fed32c543240b1beae2c0080ffb155ecbbb824289ea190bf89719dd9. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZDQH2364068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf612d6167b2622ea1d1c96839aa059a2f5d2014aa69b9a1b1003879758fea8b7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDQH2364069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a135ebe94894026f2fd1814bf7051b8240b048732207ba21bd0b1c052b2c96f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZDQH2376942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbaaa522c881a5950d967928e1c17e1a585f5b2172cb140e5b815c1d9a7ac07. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZDQH2376943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb74221b42a512e409820673b921ad31c110dfcc0e467e0a1b61a289b0c5e3a5. 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/QZDQH2376945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9e92bc75065f4cb51f593916503b75c61e29f70711cde57cbf16723aec4789. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDQH2376948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675b48407e119b20318b47369c81a186e59eaeb48b61f391dfd9fc73a4988269. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZDQH2376949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa77214621013675f575e8f7173cbc0ad206e53c14b46dc6e0bbf8b00b8d5390. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MXUM72400790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21182f65fd383b68bef5cfb1a0502f372131cc892fda8c8ab2dbcc257f1acbe3. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:56:39Z), 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/MXUM72400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ee190230e4f327dd25d93bc75ea8daeb9754ab310f97a9d5299fdf1e3fb18e. 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/MXUM72400842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285c84d47789bb843e8e81850226a53f3aa8382fdc668cd28c07e0ff317e79c0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXUM72400853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa402bc8a548f77f3219b34dd9d0dd08b6d6ed73624bbf141ade7988e7b6b2f37. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T04:58:46Z), 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/MXUM72500062.
Corridos En Vivo Desde Cerritos (Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74d699ee0f3c86d19e23642892e3713d128b2237f0739c82325ed7874165538. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/MXUM72500781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd749e1706359fd5513dbe812c8e1013a210e0f9edb4323045932b9c3620a92. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MXUM72500782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687f13402b9c94a4fa441943284efc478c6f95c7c4b431bb2efc827cd48e20fd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/MXUM72500783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdff3f4b7e072ad23551b3a58dbd3f0bba0750d157f77d97199f17bd08c288f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/MXUM72500784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16183757bcd35641d45c6f0a28b965d3817f311f0d8fc6b36ee9ef9c1d52cf3f. 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/MXUM72500785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47572a537285cf5cd8cb6f9a95f38d4c22822800a076f210ae86aca80ea74ec. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/MXUM72500786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf57d0127bb6c08e91c6622418da1cd2bf70600e5bafa46e75023cb06bd4852. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MXUM72500787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d0fa72fca7b55d6e54f473d47243f37555ddf320f5473644bc2e283b824fd6. 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/MXUM72500788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d322f62cb469ba6310a389241e08e4ee357b31532909edd4066075c7993644. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:34Z), 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/MXUM72500791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1c34fd1362bda7f8c9505ddbcce0d292c1a61f70959e262c7bf6508d129196. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/MXUM72502917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef709e4bc73a03bf654b6a83aa87d2be9aef8b04f9bedd491e3c83f878e429e1. 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/MXUM72503309.