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 0xd14fedc69a70b6aac6401066fc72bd8760b68d7e77e36c8501638d7a47a6bd71. 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/eba6de0f-90bd-4a54-bc30-e94b9cc5b185.json and https://artists.proofprofile.net/proofs/artist/eba6de0f-90bd-4a54-bc30-e94b9cc5b185.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 0x1578c41022c97ae35f063b3e0f1fce594526fedd74cef572dfdfffb33ee84b2f. 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/GBQSE2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7735f25241efda4096d294653d9049cce20c915efc9c1d233f564a74d9d0191e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBQSE1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73932d604823609ecaf7a2581ed800fbce13c09e5dca46e8ebf612129d52355e. 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/GBQSE1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a12048827fa4c6aece3738b5f9d0d969a46c89277a6791033901370ace031a9. 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/GBQSE1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed2609bdceb2ea9f229cabe8f079c4c7fcd59e7d77e3905a5c7db894e7ca0bc. 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/GBQSE1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a9859194a80a19532eeb4dcca5850b81ceae7b5750f3ca395098e4e83129d4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBQSE1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a69094cf8d7028dde5db89b7531570c13d9d28e9970b9acb738ed4ac61ae56f. 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/GBQSE1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09870eaadf4d86d5f32d171edf5b6e488e4ef64552f09b870b69f6fe8975fc98. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/GBQSE1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9a8ceb3b29047e72eae21460ad68b8705af2113a2b9b0883e8b77e603c7675. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBQSE1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f6d10698f58ea5b16640e83e0e6485bc3574454deec89e225d4ea6f4748d15. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBQSE1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe9727b5b8c429f224b59de011600a8c6318536b584947715d3fe81fb5b4d4c. 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/GBQSE1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9221bd19b72c89145c5c4131e00985eb9f4b557defcf8fb2a30de359fcb883. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBKZG1600690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b86fdb076018b361adc4df126db36daeeb71bb49bccb60d82fd1f607924f6e2. 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/GBQSE2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c27e23d978424b3f24ef2435beb0243b690b6b5c2cabc310ead3a062216ef8. 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/GBSXS2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c907848fd4fddfdde31dca3c7205c529ca82f83a8fe6f5a0d485f1da9941cfb. 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/UKW3Z2201241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8756590f88ae702e6fac9739072fec3ae6917537d1d85d22782810ae2b326f0. 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/QMKKH2201542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe57f9785cdeea345b41960b94446b0c2f7cc70927e78f53f1350f8fcbc98c8b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QMKKH2201615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a7f8bcec2fa76223d1b84dc77e04ab140a7e2d75673befe63d23df0576b3fb. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBQSE2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140906c4ef63bd35a8997ea8ccb737d410758b37fc3591b7ac6ada2f36a89e4b. 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/GBQSE2200011.
Pretty Girl (Critical Impact & Sub Zero Remix)
Pretty Girl - Critical Impact & Sub Zero Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034e2e701c98633cd6f97f7bc8cd3e7d013376d9e716e3d1c0c26b42dfa29df3. 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/GBQSE2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24287a090162483704b6209c051f1807472e88673be9983f863679afbb1aa5d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBQSE2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d4ad5e2b879867e70bc401d92578c0595aeaf69429a85f5abdf2f39fe96029. 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/GBQSE2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be79d335153b1b35788789e53ea016518b9d0c348f388ff2764723fb48a0e88. 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/GBQSE2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17034c4217771688a68650fd3395993ce99ec4b7aab8f8e207b84ef0a391e8c7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBQSE2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7650ef7dd8cb9cb9449d369824b27a9180815afdaa973c5142a0038806398302. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GBQSE2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1af656fb2e1175ef91939394e7808ad3a5c517aae31f396ffd0f6a5ada20466. 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/GBQSE2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73932d604823609ecaf7a2581ed800fbce13c09e5dca46e8ebf612129d52355e. 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/GBQSE1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a1856750ecfd741a8c4a9466ee42b918fda097fdf861b0d19da081636cb6c2. 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/GBBHF1310503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea71a4eb67bf84ce97737fd9798cc28406f3f68e331d0dde6fd2a72a35c1f35. 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/GBBHF1310504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec04aaeece88f19268ab5cc3d8476f6cd9c14ed6e4e294d5b908b7ec03e84592. 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/GBLSB1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7be95ee25cc1e62a9d851177d7e01c71a8f1972708923d3a03c330d996a0e40. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBLSB1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb03e7a7a96a596a7c8ad1c406afeb5be9b1aaf19e8c877de3f287bd8e85d79. 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/GBQSE1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c69be6acc8f3bc07e9dc91caf036e1e2433b0e25f84546dfb7cf6280b831c2a. 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/GBQSE1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c1bfac8c527493b20c7c8d7b7ecbbdf71085d67bb5237111281ae091d9072b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBLSB1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25195d99f936c5a28b7499f8c0911500ede0b87302f592dc3236d4c6bff02602. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/GBKZG1400013.