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 0x7d0accbfef9a93b544251239309b407fab5814881d9c1aa7035d09915c64db29. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e75bd78d-e900-44cf-b8fd-e7f547b31c9b.json and https://artists.proofprofile.net/proofs/artist/e75bd78d-e900-44cf-b8fd-e7f547b31c9b.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 0x03343b54896960904c6a742f4e8503ab1d10b8a4d7ced6b138966cb7d557ca5b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX201816613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d22a7c4d960950552f360cdab0b6575ed3ee89832afb9833d6156184a328f2. 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/FRX201816614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47718c6ecd70c2cd90677b0308329893137c4e9dbdbe872c262b96e25d3f206. 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/FRX201816616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52732213d42a8dff99dcdf78abcdf185f88b1f29d5cfaaa02c478db7804915e6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX201816618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d0142e3cfb805055e612d8641fea7f561766618e217ccab9ec36dc346849c6. 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/FR10S1967114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19690a71d6b723cfdb91af43541eee2a8db00414e2e4979c2eb28735ba5ac0ab. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR59R1932282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dde7d44d5d16ae6b7b1e592241fef9ccc092d154e70487df9033b23deeff45c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR59R1932284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a05443069f9ff3e210b071d87a196323506ae5c4a6201c4d6d71d095df8acb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR59R1932286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff668c59ca4f66f3ecbb2e579e7e52b4a4a7822f687ef8d7bce574fa2c216d24. 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/FR59R1932288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a08135930ca6bbc6d8e902c6fa9cd2fe0c2d59e138051751f34c895855bd957. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:29:36Z), 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/FR59R1932289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9536354bed9e23a4d372f45871678480614177ed8cdbe6611185c4abab275e1e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/FR59R1932290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5aa49f0bafb7b06ae8f4b67fc2a3794f0e9bc0753cdf4c9a8842ba39f939ec4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR59R1998412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd455e3ba56eed4ce61cf1c3eb94e2413ddb6ef8ce85e2f1f34634d6b67de7eb. 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/RUACR2000283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2119d10d2301d9521bdeeab930d76b16209e66863c4890c8ef1c62e5208f51. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUACR2200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a70e6157e1a1463f8c080607fffa7736eaef40df8ea796551cabb7263cc073a. 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/RUACR2200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1ce1b1fbcafcc5a3a08f693e6ceff04f84dd3b66bdbe43d1de7252cc52fad6. 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/RUACR2301920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931344b100d05abb3632adf664fd7cf31b793d7457450f942cfb211a95c85169. 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/RUACR2400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dccb06997d8139a635927cefc8ebc19432b4668f1ff0c1da8c0338972004f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/RUACR2000164.