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 0x9e1ca54674d393ad6c7134d710116d521cbd42e22a8db2c83c211751d3e9ed41. 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/1be5bc88-a0cb-48eb-a885-1b7c41d45848.json and https://artists.proofprofile.net/proofs/artist/1be5bc88-a0cb-48eb-a885-1b7c41d45848.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 0xceaa8bcd82793414bf19134c6a66012fda9825bf31466d550d663f2ef1bce86d. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/USSP30216708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b2e982dff0bae9993915826a2cb914f5862f6904e519ebe947653a2729c72c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USSP30216705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe35337bbba0ba2f042cf160539ca1f5075404710592e466b0af78461d55144c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USSP30500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f812b8f07c240f06537b305ed3a98dc54ebd0a383218261bee47c7f1cb88674. 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/CAN110700997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3750562cbe79a0968a856c1b501ad2577d9d357d66ebba9146240b841e79e6d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/CAN110701004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c0555eeba81892cb8d6af4446a1894a16f9351890f053f58f7558ab0af90fa. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/CAN110701006.
Expelled, No Intelligence Allowed (Original Soundtrack)
Expelled, No Intelligence Allowed (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8247a5c3691a4eee60a64a27466d51045e00b73787128b4039ac3da705f663. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/GBR4M1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0485f0cb07ba7432ff53da28f9b7f75ec3f951f4b01235677d85829c3a16847c. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/GBR4M1200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10475e2d3a8a18ede97c9030ce1888bf09e008f3b9ef174444a78ad04f30a33c. 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/GBR4M2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef82537b83f04571abb6321cc8021bfcfb6607825167fe2c532afc717fb237b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBR4M2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d9292aa761315bbf9d99cc2f4f0d7709cb479adc1a8a68772a015d46d74f00. 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/GBR4M2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed056a51ae7170aaf277d82c0a163d25cd50cd67100e315c2d03ac5b431645. 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/GBR4M2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdc98d613a47191c1b6aa4c8d385563f8049fc8d92450974eca4a1bc2bb8589. 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/GBR4M2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d76a60e737b04b3627ab1e36ac67c2f5e8f4ba8180d8c049c8522b0994d8e4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBR4M2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128f2664da5fae14f91222b37edd2af7eaafd5807835ee05d24999b96d599d64. 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/GBR4M2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65baa5c0f2b33a565704b6320ddf1e62cb6c041280d7e7e87ae03f4ee840b338. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBR4M2500008.
Metamorphosiz: The End (Remixes, Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe986f049ed46a69f768e1db4bbfd658a2c84c43b691681352f583bc37699c3a9. 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/TCABO1357443.
Metamorphosiz: The End (Remixes, Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27122e0718253aeec888dfeb7f38caeabe21deb1eb59739d143d609e2ea24494. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCABK1271302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b7f41f68f83c2e57c057ee24b3139198168eaa4a076038f27d77357c7d11e3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCABK1271307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb853ecf3b7f06a6efb62e8ac029ddebb3906af8f3fd64787b1a5d38e4703e6f. 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/NLCK41037264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afc97fa322cd1521c3c31ed84247b6e15e72c78b7b2bf8c8c14043c29e86ca0. 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/GBR4M2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12eec32c6c5ca9ba808585d813a7376f5faadce1b8c7fb802483f7d67f1dbf1. 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/CH6551700215.