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 0x846ccf45e4a5c341407c0cfdbe3f95b3dc61b4e285494c3f877da8fca03ed42a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fbd290d-768e-4f2c-8a1f-95de53200299.json and https://artists.proofprofile.net/proofs/artist/9fbd290d-768e-4f2c-8a1f-95de53200299.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 0xca494249330aa25b7f99abb973c387d29f0c1f900d288d08aa6c01a575cd398d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGJ1380249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5d4a1eb41dc02d9bdd558a3b3f979ceb4a3a8a577f816d06a8861d583c8ebd. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:56Z), 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/USCGJ1380252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6908c110fdf94a75f5b2c5e9acf55519ef611d1c1c19029cf6a86ce2e9f0165. 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/USCGJ1380254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058d2674621ec5c75ecf6c7c9db50e8a40ceface0335bbc4a91729938677e40c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:21:57Z), 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/USCGJ1380255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae16228208a78ef5fd792cfdf3250f001a8c0d27ed4348838f40c79fa631d6c3. 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/USCGJ1380256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8470780c9365bd3e09fd084c0f2a517e7b8a2c4b8b0f556e83f7aab827a514. 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/USCGJ1380258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9178538008034e8cd4863b6283e6edff54487704a1898081ef9f507a1e3f6c17. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USDY41525897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4374141e2787840796a8dea471afbdc3320b164a4ab5f3c267e77b2675a3f697. 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/USDY41525898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2b2f8bf113be7a090a64b1fc99a555ebe2223a94a8865ffa1b38a426d0a78. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USDY41525901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8281fb3bda2c151f72f4bfacb06e42896f68d7a30b45d0af6e3ebca03f5910d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USDY41525902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d6c2694ff4c751b077fc0688fdb93092dccfb1cbc9dfaf74e78bb0c046784d. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:34:43Z), 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/USDY41525904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d00c2a4b7a28cc8f7e88665845cb0da0b34cb394d9ba79c0151fdbc29e9796e. 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/USDY41525908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce6ce444ba15841ed9d20b20a2d161494122d5bdc6e39880d9a1054276b9f09. 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/USDY41525909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa835a0877b8d145fc423831d5fcd916e7e54f59c1952ac425c325f661faf84f. 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/USDY41525911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4961eaa075bfa4adef218be19389f99c77de6e422c9b5f148c986887e82ff05a. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USGTJ2200289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3b5ff4ffc128d8a872fec228bdb12bd32f3073f36b43cab9361f779fd0cff9. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:39:05Z), 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/USGTJ2200291.