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 0x8287848844f7d3981233a4392c34bc179863e191299df4195083e8b23d0998ee. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/847894b0-d7bb-4870-85f2-ab9fa3c4fef6.json and https://artists.proofprofile.net/proofs/artist/847894b0-d7bb-4870-85f2-ab9fa3c4fef6.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 0x488adb6fa71c838bbabf795f4bb7721d8b3ce92b57e6b1265323139d9c42af15. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SE6SA2351028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d8177703e2534d8488e2476992beacfb849c2e402d416a04ea0303561d1144. 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/SE6XY2331873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7597cb64f96acd450f0b2daf7b4c0a4a65e6ff2c099fdf203a30c809af142b1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:34Z), 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/SE6TI2368669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7257ec7743ac1e3e5a0ec20ee7d99c76b342a898182bf97b25e816e2828a3b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:08Z), 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/SE6SA2308034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b449e729dac4d45bd85bdc54ad00f5f173b78df2dd058dc9cb3fdf5569a473. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6TI2313718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff575847dc82edb5720f12be2fdf89ce3fafd3588f82dadc83b198a1dab4beea. 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/SE6XY2532681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb69bb9dfd525d519dc4a5157c96c58c8526f2a9e6ce1873bff86a423c8d4e3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6XY2532682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31a1b93e171335373f84145e071c8dd41883d394aeaede4be1b321f43d96992. 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/SE6XY2532684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a20cb13ba395356f398b817976707af8d0a90df8b802ffd0905f5796fff920. 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/SE6XY2532685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0831b51ceedfefa43103f62737f6cea9d30e64856808ffafca1a434788c4607a. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/SE6XY2532686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83ebe6ab1eb6577e6ecdfac3c4715f587bb7b420ab24f51ce96a910119df507. 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/SE6XY2532687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7252d71ff3df07e58ca7ad88f3491fa06ffc1a72aa743c61d1e6e095259b60a1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6XY2532689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf998a2f2beee3f068e0ac709c3604161d07caac3878a0c105214d06b0e04a446. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:19:56Z), 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/SE6XY2532691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea2618603e003b3062813131bbea5d36b9e38a36e7076b6aea7d7ec0f5864b5. 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/SE6XY2532692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27abbb0b652c194e502d60071e57a52066758171af215c847ce8d2390df3ade6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SE6XY2532693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d435d110770e17f75c7d4e46746564d3d81322067b9ed93adbfa44e37004cd. 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/SE6XY2532694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f70b5477deefd1c385ee785afe4cf56c680ae3d26067fb56e4b53aa32199b27. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6XY2532695.