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 0xdc64735901311479c55fa0fea393f04c67e0cc5e0f23cee0d4e088e90d6eecaf. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/183baece-21ee-4cca-a3ac-d1b2cf8fac25.json and https://artists.proofprofile.net/proofs/artist/183baece-21ee-4cca-a3ac-d1b2cf8fac25.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dadc728af91d63e005907ea39ac17f2531a6781cdcc466e86776ab6a8d7dbc0. 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/TCADQ1898468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7ee388fa986ac8bb1cda730cb6cb8b24cf5f81c21c42e5937cfaed069684f1. 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/TCADQ1898485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484fdacf079bda405316907b8ef0c57b9ff2b17ee734735ad567b11eb94876da. 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/TCADQ1898493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd4cafd1041e4a82e978384e9be4e3ba778bf9f05016f425f1a7bf834b9024d. 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/TCADQ1898524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03325d0af7863b9bc0fea7a3625cf9c9ae0b3961213e1e248d7c69ef554921b3. 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/TCADQ1898558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbfd6b0d2a1d0b5f3d388b69549587514a45d1bd05059efc43aeec38c1e60dd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADQ1898585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2e0678a20d4668f7537369f06da1447a80eb6d5c4864c01696aa1de36a4a64. 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/TCADQ1898630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4019e8cbf5d89715d4fbe0377b236c3a1e8cb7bf6de8aaf3501d8036978c42d2. 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/TCADQ1898640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee235f6d9848dd137d083d04e37fdb96df36aee8b08555d62769c92662516c9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADR1801632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06c7a1147bcc2e6e265cfb79ed513af12a0741599b40bd3b32a074e248d0ca4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADQ1898647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27842e142cbe22740755794ae015a1c3c2bfa5c42e358855e89054e8dfb1dbd. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCADQ1898544.
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 0x3e2cce231a69dd40654999493196365c1c3bb84a732c9c81436c45db38129bbf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCADQ1898581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07361a3609dcc7e55473c895e24cf3149d2e32786bee1e61eef48c343d9a1517. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCADQ1898590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919c913a8e0f76fc88c394da2f4ccd6b308bb0f49cdb706acd6b5cf2e5d17cf6. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TCADQ1898599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408a25371eda8c9d8ba7642323366b14d5664eab32eb2c86abc4d97c20a0b886. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/TCADQ1898643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb104077641d540c84ec59c5cd04bec6fc2f564b9889ed6799ffd140410755998. 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/QZFYY1902951.
No Other Way (feat. Polyester the Saint)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f78d9b1dcbbf0749badf45b5e5423d84cc293583ec7d67e6e0623070b2f327. 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/TCADL1898177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc57a65b26250238c9190616488ea76b3786af5cf6eef09821ea0793826033bb. 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/TCADL1898178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baf8838b7d8b1e72b6de66b3fc6a022d84fa934d34cb53c99bde881de7065b9. 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/TCADL1898181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e00cf70ecff45450d160b1c2ef3f1b2ec3c891d9f4e481cdb16a5c9ca8d165b. 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/TCADL1898183.
Only a Case (feat. Nipsey Hussle & Conrad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf976f7ebbbc64f64d2c9f208a82ea7f176baab70db5004e4f37ae24fa88177ac. 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/TCADL1898200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c94627de8ea77ab130e3ea229298b423f27f83a23b0f53262a7b2d6b024642f. 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/TCADL1898215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856745ea9e39f26df3394fa90e4cd5b9630264a38ee551a551439be83c4e140f. 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/TCADL1898218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742a5bb99a7bc35f06fb8cf142f14909b52d658e028a40492190b0ddd54ce708. 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/TCADL1898243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe221bd677ab00f08c8140d4ce1ebf7e06cb193b6f4411ae36e12a2f00a2c79. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TCADL1898180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0751b0423ed99aa4625f382ef0cc54cd1a12a18de46efeef29c92be782720a4. 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/TCADL1898185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8c72ac64b88c1016d3570de4166f459ff023a3c0fb3a791ecd5396ce183c5d. 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/TCADL1898207.
How U Feelin (feat. J Stone & Roadie Rose)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee44cd317de4dc438c2ccac0d02f54d514070fc3b54ebed389573cfc0e796c7. 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/TCADL1898225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9cd7876a75c1fd8122c0b2725bd1822eb51eb6fdf01c70a3b1fb050c9c3192. 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/TCACL1682732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd3a8313e8c50a2dbf2d6f4af7833024f568b1e47b3903bf74e319c426fbe5e. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TCACL1682726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e135913bc7740a8ad7deaf31e3f46b4deca72b4dd65361c8fc9289c220caef9. 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/TCADG1775348.