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 0xc28de21e79face90fec01720afbb39bc2511e37286edf960f177e950e07b743e. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b1d56b4-d036-4535-9cdf-374ccd000c50.json and https://artists.proofprofile.net/proofs/artist/1b1d56b4-d036-4535-9cdf-374ccd000c50.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 0x6d925046decb3b9d7872ecb280c1ee4ec124684f9c27dd0d9f7358d8bacba054. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/AUBEC2345687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e63c35a7ca4ed1fed23d9dffb3466526ce5dab6f0903d80fc94c6cea38f779. 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/AUBEC2345685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bff7e9ee451b44a0a5ff4475aec9b9a83f921d4affc045a84ae98813e2f692b. 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/AUBEC2345688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13865ba02d681844837ceb71af50c14f436b6f5666820408bf569fe3c54371dd. 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/AUBEC2345684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531a11e8724df2a0b95ce5e864061101624b25b07ff671673b30b0f149a023b1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/AUBEC2345686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09833ee22afa9e5a96fcfc2901010f07d999c38ad107222fa6d04b95d2c2a526. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/AUBEC2346167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4ca8e4b7c7c28c6e1e000d11af9c898e8bd2dc423be68dd22d1175a91c4422. 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/AUBEC2346170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5f412e10eb907f9946e8876e16413c2182a0fb7a1d35902f6441d678447977. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/AUBEC2346168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294ad8dcdce1a9ce5fbb643bbd79053d6d9166cd82e62351ad57fb3761c19d02. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/AUBEC2346169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a4452fe3a1d154744d58805978d8e548694e5bac1d31a66c21063c6f63123e. 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/AUBEC2346171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e48d892fb044b141f6792c1f518880f70de30caf49d9a4eb2d96cc0621016d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUBEC2346357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618201ad48e5fb08175f1c9ea1721547a1f5d1b49aa9dc8af3ebf587e05c5053. 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/AUBEC2346360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eef82ef8b5ff31ef639eec9aa5cfa3049b42f484c746ec94017ddc48f095f29. 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/AUBEC2346359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dc419fe59124210c5a630b41d3ce08a50bfff6eea51382952dfaa7efcda4d0. 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/AUBEC2346358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b059bdaa279ac59b568f6dd48eee33f3ada194542ef027c9448755922838901. 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/AUBEC2346361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4c02ad231f816a59334225459bc5f80b4074b5136100832c17159d90232cfe. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/AUBEC2347638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08f81a407224b0596dd14c5cb283298ff81e66978c76e8d5e46589800ff5bfb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:52:35Z), 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/AUBEC2347637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34db34818135abc912ae9b6ace776c9c27163fb4508b9927821ec6b43bb44056. 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/AUBEC2347643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ebe08b9e48fe38aa5ef437bed34f19b56238058f6b0440a8d44618d5daa757. 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/AUBEC2347645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971941076a4e298e0f4a73e0ed5467729abf159a86e80bfd43db3e05c32c8216. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/AUBEC2347646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79099954154aee6e701741c580d69508f2b3445c18fc723764f2210726457047. 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/AUBEC2348044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952cf66248bfcd000a85cf5ec536adcdd5e8b6b1c59d53f4336eeeb3900d8526. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/AUBEC2348047.