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 0x7b13e3286ba3ee30e1e716e7b94daee77e04baedd9ef826e79f02aa295b9ca84. 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/307f5f88-0755-4312-8921-2fdfcf39485c.json and https://artists.proofprofile.net/proofs/artist/307f5f88-0755-4312-8921-2fdfcf39485c.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 0x716be0fd4134dd8a47a978122328338a643106190beb1b319c2ef06cbc8fd17b. 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/TCACB1433225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f79654e4cd27733e0a18ba0bd359230b44eb294e450f685b560e0c1baa699ab. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AUMGB1400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb103e7bfd64628f76a10bda5b5f285dcba7d786370ad69a9b0095428dfb1d6fc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUMGB1400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76a7d9d7ed9fa4df07d5afb837116f3b580150b39426faf5a56b22ecc42ed10. 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/AUMGB1400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c1fd87435a6cb73f585fcd21fdc374aa77bab9f377c870f8a5c4ec342547b4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:23Z), 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/AUMGB1400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ef11fc5bd6feee599d9ae4d6603c38813829ce8d057b89b3ea8b0d3297db69. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/AUMN31900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb6c87f6a1e0d73632e2cb0e7f23cccc9b89521dedf612c06c959ebca8ca993. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUMN31900013.
Talking About The Weather (While the House Burns Down)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9539295fd4eef4e3383ff5e3f273f0b0b686649a929542f610c60b5adc09f5d0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/AUMN31900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5898b5753a4c121f402f35c16dbfa74277104a05f5e9c11d55f797d3e8da8a1. 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/AUMN31900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0319f50facc5868177a8557d87986ee9c3cd6e766c5c74bc4802c34eab9bded. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUMN31900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af17dcb4d972afb322c937bb5a3bd1960744a995b301a5d80a96bd1900e3922. 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/AUMN31900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1d8413d2305cbb31a3330233b8e09159d363a168ccc45164819424f29e1663. 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/AUMGB2300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa19fb8ad1eefb1b183723d1cf604ac5088dcce991fd91afff6cc955edecad56. 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/DGA0H2462395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf039fcd7ece504dc61d7d8d4ab52649c5b7cb0ebb008d1c6556bcd35242f15ce. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/DGA0L2409220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c4058a0aca3897974b0e001e725257a54edd2def1cf356a66f527e08f53b04. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA092338880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165129c4bf9b1b10508c6e4b1ef514a09f76e631bfd08c25d6f118e3ffd5f360. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX452472944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96fdfa0338d643c6acedda58e6acf7498415330465e31d459c6829411204199. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA0L2409222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d529a7da631199d482cda377d2cb98e7631a2a3eb2c158319cb933b76d2773f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DGA0L2409223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb897024c1cbf26f0fd3e550e10514e433f25e6ead55ad59b185a90e372db4ac9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA0L2409224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d5fb684f07fd4b572cea558187bd9bd1360b88ac235bb19087bbe6fdd3f991. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:10:32Z), 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/FR96X2468112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015d71b423b44ce00f7ec49cc87f5ed8e25738ddbac5fdafaac74adc5c743e2a. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:05Z), 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/DGA0L2409225.