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 0x15cfc3cb5575b4d546a30c656af1bf45e5fbb8ac479c808eba48fcb4de974601. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaeb0e2a-5e19-40b3-9b8f-c0111375798c.json and https://artists.proofprofile.net/proofs/artist/eaeb0e2a-5e19-40b3-9b8f-c0111375798c.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 0x9867d204e3fb9bbea272e8cc9922608b8e419ad3c753f68b5f115af403064017. 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/DEQ321700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81807c778171bc874cc7eaa86851da114277274dbb46251785e2dcdde484be9d. 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/DEQR41200011.
Santa Claus Is Comin' To Town - Remastered 1999
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635c5cecf53228a6c1a45212721e1c79e3f31912fbd3c6b597c6962effc306fb. 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/USEM39900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83f3b13328ada7d4944ef8f0f9408154d4993cd374eb01bcb3710faa714298. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USHR11435433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388381a2dd4ddf7c12580bc9463e75ec2e79dd2c28c2ee0ae367a459cab7cc33. 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/ITUM71800217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a202c743ef5c0d2dd8f1c054d9b3ad925ff5653e16c9ad614da3f369ce95e2b. 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/ITUM71600809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9add0d7577861882ce556c6c177b4bd412020aaf0af585636e2b8cece2bf08d2. 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/ITUM71801214.
Don’t Kill The Night (feat. Rhett Fisher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e839fd4f191ba451fd5d24f7f6c6385d0ee76f2a6c851b6f49cbde0c3f1f61. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ITUM71501732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9add0d7577861882ce556c6c177b4bd412020aaf0af585636e2b8cece2bf08d2. 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/ITUM71801214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388381a2dd4ddf7c12580bc9463e75ec2e79dd2c28c2ee0ae367a459cab7cc33. 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/ITUM71800217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28abdee7e512f9890e2dfd5b80a889fc8ac849a897d45ec82aeb527b9314d177. 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/TCACS1657447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05142736e3894b7e4b6f4d92962beb6a7d46a9625789deb1f3793a58407d9eee. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ITUM71600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ac8287e233e7749db776741fedadb101bc85abe0b3bbf8013187e54b16d64. 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/ITUM71501734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9282a497c83805f1d27e71721e763d7a1034d8a4c4f79f96c2d78ec558e550. 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/TCACD1599126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540913d9b21679301e4807e3b4076cf3a37b33b0fdcce12c5388815f5db0dbb0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SEUM71900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45505dc4a3dd3e2a1b438d8233ec8b94c3b4f5eb77cc2ca1dc23c57a46e458d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SEUM71900068.
High With Somebody - Henri Purnell Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f0e394433a7eb4339a6a8e4340d5746dccb77359fbcd94233acf3d69d0321c. 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/SEUM71800414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40382f63e2a321f8527462d425ce1433792fc0f958c5ca3449bdb2f89e3ce582. 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/SEUM71800415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328e55f1d66be01777232a863d74bf6af5c5fa3d06a877df7e3cbaa93fd53699. 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/SEUM71700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977d1d16fcd4b2874f7326934ec328487dd35f568c56d966454c75621dfdb879. 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/SEUM71700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe7cbd9ab31ed09b9f02ae15558e07092d7cb5be359703bcc7664520d65206c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEUM71700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1836a653ebd3cc0e314fc823dff81c576da59a2e1b292286708b0a2ad68b85d. 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/SEUM71700938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb836127bada495489548069db11ea1c56f55d3d1cb0d21f6f469352c51dc4b44. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEUM71700384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdcc2ddb2ff99d4397e5d6df969b451432a24eed72198f234c718b0f3477097. 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/USUM71601533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d34b1af5f69db78dd21a27e233518f4a97b58922fa127a7637c70f1d07fe5c. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USUM71601534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78084a048bb915f08dd20ba8e6160259ec16987b33af13c19ba02b2eb439d675. 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/AUEI11300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e9bebedcc5b4ecbaf711ddb95e866a54dc40dbe53ada264d60cf89eb7e882a. 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/CHB701400134.