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 0x564ba2eeb3568a6598c9ae5c9679899db1758788bcb51252531bdcb06a5bb13b. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef5775af-ebd2-4119-ac52-b24a98a978c0.json and https://artists.proofprofile.net/proofs/artist/ef5775af-ebd2-4119-ac52-b24a98a978c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Get Back (feat. Grande Marshall & Pauly Sue)
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 0x053b5715d3f09b3c0a0bfe783043f554055f08431ad984d8f717f577a0473b95. 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/TCACZ1771590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81ce381c37d723e0c332b083901034da2be9c4ae0a4f9a33c9f0c6d6ceb4901. 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/TCACZ1771628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c078040abd9cc648308214f47329586a4a4c98542124099da1b429ceaad7dd2. 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/TCACZ1771635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4f74d5d32bd060d8241e9d2a88b5e29be49ea461e14cd717bae20cfb66f375. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCACZ1771646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a1bf88c08541e6875d9e864d23c5503e7ba766fdfb99aaf875e465db8940a5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:27:23Z), 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/TCACZ1771648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46b983c33d43ed9ba674e75ca3a828568c7e3e1224cfc7f7b90caee3b6aef09. 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/TCACZ1771654.
Hurtin (feat. Dizzy Santana & Bootychaaain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd181b7bd8895847a01ad7125f6228d9559b5d834ba079f086ffd812b0e398dd. 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/TCACZ1771658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4bbff0de006a2a61ca277851b4fa7ce8f08d61d38b2f34fe1d43939bbffb22. 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/TCACZ1771660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb013cf32ad3e0d7f9af1eeec78eb0b778709c1b9d9d821681dd1c132af810ab5. 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/TCACZ1771663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcdeffb3b4a78908f732fbba7496fe99ad77ec143c994952bda89793b099bbb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACZ1771666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fefce18b8554a0798df3388fcf46a4599490b29bc2836493d5416123d3bbc5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCACZ1771633.
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 0x1beb5886a9d36b114a63555c983a62732fd164ff87accc96d9d199e579de0699. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCACZ1771639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2618acffcb5746c254dba33fcefd3897e70fed2e1aa36a5d84ac568992e20d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCACZ1771642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9786d92413d19aa096a05c31c0e9672b17b2bb39d64dcf6241428973eb2104. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/TCACZ1771644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6a2b8a76000478ce7f7fc6756ab92a148d41da35a185e02ad62a57962798c7. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/TCACZ1771650.
Who Said We Couldn't Do This 2getha (feat. Mue Mue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74631a76ed831498fea92056480dc6b1fec5dd51c72afe1ba3849ee7b1565ad1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCACZ1771669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238b78692ad72d6647965207601b6d76c42e9bbf58ff993cad68c6659fbf3b6c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TCACZ1771691.
I Can Feel the Hate (feat. Lil Zubin & Creep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3d76021bf07f64264f9ed87f1db5c85fa73b9479bfe55c23a3f7e9ea6250a7. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/TCACZ1771702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebed69debe661687b4233e330142aedffe46e3964689e594c426dcada83d05c. 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/TCACZ1771711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffc82f9ddc327dca050d56f95c8442e35be0355e1cf0965bd82d9366a5be998. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCACZ1771721.