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 0xcb6261c7ffc60aabf5f6d0965653270e23e5a6124df92d6f33cb16a2c7a1fbe5. 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/ff673634-152b-4d76-b498-ca3889aa2ca4.json and https://artists.proofprofile.net/proofs/artist/ff673634-152b-4d76-b498-ca3889aa2ca4.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 0xecc6c525722c199080beaa3416f3325a9043c56b9deb8e9d111dce622746f106. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBRP0022001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4731105436ea191f42fa356fbb80abfdcead25afc86acae93f9cc6db4e64a6b2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBRP0022002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f5ed977e0703e4c646029013098f1b652c6880ddb2362a240628d3d325bbde. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBRP0022003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc944834225f8e1db4187233ec8a3bb726ad1638b5ae01a9b3d70784800ec354c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBRP0022004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a2d4d194c59ff8030f9010e0acff0bb343f54f3f9410daac0655f0dc810740. 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/GBBRP0100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930556f41e1bc779b3215a703c773750b98672c502757abc5d0ba1a42ec4fd61. 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/GBBRP0100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4216df6e03fb971c996e02d152fd9dae3fcce02eaef1de933e19541326d7b563. 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/GBBRP0100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e2e6c24208ac4e804b7e66003b6b50c79ada7d5166d81ba2da0040e7e93f12. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:01:14Z), 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/GBBRP0100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9579eaad625e5dacbfa96c18e92cde158903fb3084fb9a71eb7b7ffc4031eb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:22:16Z), 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/GBBRP0100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742fa1a5c5d3897a802c98bc7293ed8e222a1f44f3f48f75223ce5bc87e74bf7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBRP0000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc0987704ea5280c583015e3e03a5aab4b0bbe651c18eed554a1860d081a059. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBRP0000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b10b7a7a1f1d91bd55e076d506fcb9b39accbc78025d2e3831a9c5b501df31e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBRP0000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8e2a9a099f24586b0ca0b08dc0765ecfda040ae77b7639e31db6c98d171163. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBRP0000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41c430e3df7697feead6112c052d7f559aaa8d2cba5bad58bbe5a87c80011e. 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/GBBRP0000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49e08c9092b89927633435d38eb46c02c3b16cbaf93fe4909f1fa720623e2df. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBRP0000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3217ee56b4d0934d620ae5a72b576f7bf50cf9263deabdcdb855dff26f4586. 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/GBBRP0000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df8d0c6b78b3dd1a3a0725e8f03d0a5f81782aa4bddf0eb1388267f08023598. 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/GBBRP0000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feb600bfd86adfe9d2958fc214252f96f43fdfb0616055af3ea99d8adf52c48. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBRP0000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf1cdc3862ae4c50957059c937926b2f9d67b68a8df32cbc40560cf3fde0336. 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/GBBRP0000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdeda2f8efdc72077526a18d46cd33bd868ae87f945d5be060b095b8e6ed58e. 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/GBBRP0000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb630d2d31c24afd7ee222cdf1df8b0ef213153999ae7f067df66284395f72d38. 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/GBBRP0467002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81da48e1172e707db1fd6da0885752791dd13af06ab7b0d3f03458dfd88f672. 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/GBBRP0466001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc28860360f88a7566cc35442f2650b40d878144576a3de6dcfbdcede6d7edc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBRP0466002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dace816354d8660941e328ca431e31c14b3faf50bc5b1f1b599f27cb60a330. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBRP0466003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02103abec2b5dd9be45073dc7b1113ee92bbe96e9dd16162df32524441fe7a70. 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/GBBRP0466004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf842ada013b3b0af9cfef569843bbb99f31b314f1bf061e7a5a1c14d5b356d5a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:50:46Z), 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/GBBRP0466005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc50ea5a1f596b8657d45f794cda320a343ceb5d4a821aeb737f8204d532c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBRP0466006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e8d090fc31286192a981d95af35acd6ae387e609615c73e711ee2d50440104. 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/GBBRP0466007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73132aea956afe2dba885b668945f22f2456f7500ebc918ecc79b209b5041720. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBRP0466008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f03db1294a2387d5a845af922ea83108438bd19fb01ae96ff52ec52ce286b1e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBRP0466009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7d1a5e5d4c16539d4a6edad39409917253fc3f267100e0701e0841531fb373. 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/GBBRP0466010.