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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7490a5817ea65c43319cabbbede4f9f95613141cd98c4f36b8d57ac0467d979e. 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/007fb882-d0cf-470c-8bb7-eb75f0de78c1.json and https://artists.proofprofile.net/proofs/artist/007fb882-d0cf-470c-8bb7-eb75f0de78c1.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c284c7165b46bfbdc7542cafbc3cdd248e6dd112b84edddbcd0a95ef295abce. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZJRC1945871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628f32c8d022196f7e951dbe6fbf1f04c7e3377c377921cfbedeae1d811a9456. 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/QZFZ52125974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3115e389d270e06cfe52a5186f25cfee61a8aa7b11ac4e6ffd9ab0970dff2aaf. 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/QZFZ52125975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4ee3b0a831999626c6eb4fe8ef8f7a46d86214fa481baa3389d885a21a263a. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZFZ52125976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea742b83e5f04b748fc6e442f534f5f04eccda22ca67ac96953fbc888ecd9142. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZFZ52125977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2921a686a55a62ffe9245471bc9701c6b11e8c33de8024d6cb63a76dc0675fad. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZFZ52125979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c912b2cf5974845e7d90a9d15dd744b73e8f4162a97c19c112824d516c8d65e. 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/QZES62127433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236ed84fd20ab0f73a3a02be3f58ee81528789a07f4e835c3f9671d8e9fa9aa8. 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/QZHN92101407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1f768489b76fe817eddc7bb6037292d744c133302aef52e05a8c80282a58f4. 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/QZHN92101408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363f727d0771e95f6fc970937744f6f49ff6317db76a45ffb1add9ca514f6959. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN92101409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75e01765d2b6f92ca945077a9e67d7f8955159cf5105191f948e6467bcd98bc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZHN92101410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb98f6337921a21b8bd59bd2d5bea33263cf42e5f7c415c0d8abe9d040de6528. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN92101411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5529bc297eed64b02ab39ac9ab6b5f27dfb6f0ddf471a428d8f98b94f7203cf4. 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/QZHN92101412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adc231fdd6a9369f827da371cda2ba9d42757725906ea18f17a411f12e364ce. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6P2100249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6886b0b7a646503abea4481561b335d85303c5cb4c0c68d2a30d084a5da1d55. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZHNA2252735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11f31fa68cd6524c8fe26d63f6506be6c29908c2da1952652c7c9ec35a7793e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZHNA2252736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8854fc923e4ffd14c70232a7fe43b3d1fd91a10f187d32e582e1b9c42772ce4e. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZHNA2252738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6d92e5541282953db8750e524aa2371485bd97d1e238c3feebb32bc791bcbd. 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/QZHNA2252739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086d3387085f18adb216176e475505fce167a57b4ab4cdc763f17373fa680cbd. 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/QZRP42293747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9760cfd1e396fe607bd272ab3e38f630460deea6673f50e7f2967784406f1e. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/USUM72313521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9760cfd1e396fe607bd272ab3e38f630460deea6673f50e7f2967784406f1e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USUM72313521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1489faedfa0868eff9fd98a9b5dbd140ff779d0daef45bc5130bb6dad5612057. 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/USUM72315414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3144ae093e2beb32a71339c4d2c83e06a3ed087901e8baf452b34662f799d11b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72406307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88155520022b1add0f1edf6cd398d823d9e2e863cadc858e77328aaa45e88099. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USUM72406394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f69ce437978b62fb763e1d03d2b3a863b746440098f80c2f29fdc12099a60c2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USUM72406306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88155520022b1add0f1edf6cd398d823d9e2e863cadc858e77328aaa45e88099. 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/USUM72406394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87e2bc3d954c8c43fb4532464ceba223248af8da9369db1c0aa5c2c5fdefd6e. 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/USUM72403441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f69ce437978b62fb763e1d03d2b3a863b746440098f80c2f29fdc12099a60c2. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USUM72406306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bb0025235f00f6d4f37e6f09587f8219e55c7ae358026eaa962c4832eb380a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USUM72500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe109bac305299c3088974f4fc2353406e33091909a5597291a497a1a8e119eb0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USUM72403439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa747ec9beffbd75ecbb52cc366730f492241b6b31d82ccf7903fb2a7d49f61cd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USUM72505363.
Willing To Let You Go (feat. Anella & Abby Anderson)
Diplo Presents Thomas Wesley: The Mixtape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b4013288332f45825882c3da0ff8f3aa71cebdb258f00d7deec56282344721. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12403466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590c9d7f3c5df8c26ab895bea04aed31d8ca07da784d36e1643e8cb4497bddfd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFN2124492.