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 0x6d92b5522fbb700cf798ae5566d748c1dbd03514cdc369ff1133ddb792e42f66. Chain 2 (Bitcoin): anchored in block 953895 (2026-06-16T05:46:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fc62ab5-7b30-4e28-8747-381b062a9f06.json and https://artists.proofprofile.net/proofs/artist/0fc62ab5-7b30-4e28-8747-381b062a9f06.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 0xe4c188d8f88a944a5da680057234538bb745266cb4c87d132ef2f2589e06725c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM91469886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177790585d9c7c3390fcaae32438bfbf139a065037f3c14926fce6c2dcd10f79. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PYE762100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633958528877541f41c30405b0963d1c9484e4bc8ed8e3cf872dcefad7a3fee2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PYE762100311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9acb440060b844954beaedbf19a67c271680fef6af06ff36ab4fae8c4528af. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PYE762100379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eade71965251d59b27c114ede69ff55bbc282ee5665a030a226b2280633df0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PYE762100445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4a113b9e43292c81ed53d1e73bea1db06d425e71726fe927f60af8f06246fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PYE762100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44d21d8cf02c18f300fb40ab86f0aefc0e026738ffb1699ae662d3878b20c99. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PYE762100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428e512e1da665523f54a3017288907cd26dfad9914d9ab7f12fa25535dd6e07. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PYE762100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12401ae0e4c8a2be9c82d72933b9077ea1a535b45dc59e698c6031333e63f970. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/PYE762100418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc8458caec9e5b8955b10f24ae2bdcd1d196d71452385a91d933bbc9f030cf2. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/PYE762100320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7364e89eee461feb2fa1be7ae0e3636fabe9358833454183b8a067fbda51b21f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/PYE762100378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f08df23482ea9bbaa5c9bf9eb46c8d0c1c1c7766accb43ad7ef98850c772db. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/PYE762100398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6edefe3984bab8674fff11ad5a157f5a5f6351d024fcea460829a4f68ce266. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PYE762100382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9980dd053f0769bee7828896492d77b9600ead985160dec8b1ebede3c6808e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PYE762100383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7988280bf74849afbfbc75cd7eddc354b259591d9d0db11743e5c8b47e88f87e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PYE762100316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ce672e8c450a3ad10d953bc67298a41934d7aa831f9731824862adc67dd352. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PYE762100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1149ea1cbd5cfe054f20706bc6e74d66c799cdb2b67ee8dedd5cb7ac7c0b0d3. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/PYB141700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8d694ce082c9aa16b5295ed1cbe14e13db231e5d764dbb6d29710ec0678136. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/COAF42501244.
Genius and Madness We All Have It (feat. Sabadine)