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 0xdb1468eb09959fccb8de564aed726f862423371dc654e7baca06c70b71b90f31. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/977a5d4b-dd79-447b-90c9-e84763993d7d.json and https://artists.proofprofile.net/proofs/artist/977a5d4b-dd79-447b-90c9-e84763993d7d.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 0x563685fd280e9e1d338723eefafb371c077fe0a862efaececd06a408a3432d4c. 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/QZHNA2551294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e28f23d200a49b4c1ed30c8b1d1f3f52ebdf5435f2ba9e0f33271d4bc12e980. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZHNA2551295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a84fe321cc1aaca03d67b4f93d510ca2bd921a6ba91fa3585d065cb31a746. 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/QZHNA2551296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d06c765b76e7233055f13e07145c3a28999d8cecbf75f3b68f8b169bbd63fb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:06:14Z), 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/QZHNA2551297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd256ab6f582c8598501cf95716287de06893726bb275a66801edd0084eab5f. 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/QZHNA2551298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294ab3050d6bf40b0b98a48d751465ee9c6f7b9511d330a97266eddf550453e4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHNA2551299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf29a50dfa28cf71437a9085a42e0402ad535a877864e34921b4af32240479e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHNA2551300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3993cedc6508c347ff57b72a80715e00f223cae6017eba7b2385646c783037. 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/QZHNA2551301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165ffa975bd4dec00bc27d3979c7709c8c58b70fa77e2ee784e86dbc428ba927. 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/QZHNA2551302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7829cda212fc4ac377c9aa79700f02d94572776fcf1d4873b6fc608522d3eca6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZHNA2551303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8199ad3755077f8c848801c24c90536cfd4c76bcabe8181c38e5fa68ad06dc30. 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/QZTBE2542871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ab714c1015ca673a73a1a28d7d838a623f7d731dbfb255fd4215f512a7ecb4. 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/QZTBE2542873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afef177b57a43fc5566d2df4384e9036abf087f86d99433900f5f0434ebb23c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTBE2542874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5454785ab22838757b3e16170779fb3b9657db9985a8de711b2f9a9c4371bcf6. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTBE2542875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5b458dbc19a371c4102a0ef11c8514f6148aa82495603184c48329c8b7249b. 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/QZTBE2542876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6029fadb9e2365b0ffbae17fa06d39a3d9f54df37ee7c6367e7d34774f535aba. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTBE2542877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe43f208bb0d3f8ab738659f14865f7616470f7d418ce407ee383e24a42b295. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:29Z), 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/QZTBE2542878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6fdc00a46890c7a71108a6031791e8c5c9ce78ad9998d3afc87711156f5dcc. 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/QZTBE2542879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd8e35273c0fb12532f13e85de4d1615c80d81f5c00753a6157474ea6229535. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:09:15Z), 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/QZTBE2542880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6621618ab5503e885f6fde6cddf3c145cff2d217ecdb2639c460d716317bb5f. 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/QZTBE2542881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a8a55a98d0b041bcb8caa88f4a6dc1f8b63b4f85d2ca6c7700ff7f83ffc498. 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/QZTBE2542883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0bbff396494507455343dc940e71e6e8efeb11d879950da00d0f548876e45d. 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/QZTBE2542884.