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 0x88095dd32cde99f7048e2ef1ac7af8a6ba6d879b597771608e0d77dd477faaae. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd7c006c-e636-44aa-aeee-332d8912af23.json and https://artists.proofprofile.net/proofs/artist/fd7c006c-e636-44aa-aeee-332d8912af23.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 0x65a21e61b4d66af15fd6b015fc9e216c5855cd037ef89f267deeb3c224ed0079. 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/KRB142000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec36fa7fb08789ee6d68a0d4bab7c6f1b16840b8e17dea0f2bb6be8cad496d6d. 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/KRB142000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14251045d5d50503ff040a5c062d2cf1fa00cd87573464fb7a5970cf38191b88. 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/KRB141700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a81185f7153e0d40cb700dbc5091979d867d331d15f3e6db75b911c2ff31ba. 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/KRB141800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9136d81787c375e14cddab7da995f7b8220ce17c9ad01c1730779b07957e3c. 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/KRB142000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bab6ba07ecdf51861cd7d9701e8c54d9f399f1155bb642af0dc34b2fa21480a. 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/KRB141800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76c29efd60f97d8f72aa46c69b471bad8284ae273e71adf36c87dea9ab46a1e. 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/KRB142000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6b2212bd497c8d7206572b85c83924db84e4c8006298d9d8e9a18ddc9130ba. 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/KRB142000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1d0084d52fdd98fc84507dfa6f7248c046add1a5c3e0efa1aad4da3d31df0b. 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/KRB142000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682b72087d54d58890048360be8fd230189c4f7bdaccc1327186c306d60bdfae. 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/KRB142000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b550b240fe1b4d505ced41708ffe6e6150fc270906dea5b6dfaf654bbc5981a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/KRB142000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad97cdfbb924530ae0cd4f47711e73dd49fb69f7225c23ad5b1277f09c517ee3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/KRB142000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862b9948a63dd63549658d1382b8080ef752232264f74d30038c87595e34feb7. 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/US5TA1400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4dad5142cd98e559a769d901d77cc1e0615ecff9a8a70280ba6f66b60d8ebf. 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/US5TA1400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9532ff939955b87149fb3108defa37408d171b115be4702a929756ac3c59022b. 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/US5TA1400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3543719abff6f4e3b56d9d5c8d72f4de8e385330e7360dc11072710778f3f225. 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/US5TA1400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef84329ec89100d0dc7ccfe36e53469c33b1f1205b2981d7ab699f32eaf8d50. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US5TA1400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ba1f89ae631511fb935939a557c2d13723a43afbaebd9aa080766e58814fb6. 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/HKJ962215440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0ffdcc1a773190c4226e63e5044d745f17a4d5068e23f22ec140fed09411f7. 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/KRB142200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7937ce18dcdffc214b6ec3edc3658efe4ce161bc9e63223649121ca118066591. 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/KRB142100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6efcc28d10494609aacab287da6d9e0467f5f77fda5a02bef0a2efbfcec0694. 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/KRB142100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272160f120173ff7c21f3d512a09451774c96f765698fe36e4820687163cfe95. 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/KRB142000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4237e881fb17fc55728cc4589f10ed805b63e7e0456b7b75a106d3f610a524. 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/KRB141900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a81185f7153e0d40cb700dbc5091979d867d331d15f3e6db75b911c2ff31ba. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/KRB141800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bab6ba07ecdf51861cd7d9701e8c54d9f399f1155bb642af0dc34b2fa21480a. 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/KRB141800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14251045d5d50503ff040a5c062d2cf1fa00cd87573464fb7a5970cf38191b88. 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/KRB141700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc040d6382bdd9232ec7d27194192e5ab55aea9d50e259e74980201845105d5cf. 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/KRB141700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fbf842731b86a20fb611eb68b27682c36ea7558a0ad1a7cfa26a201568c07a. 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/KRA381700739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe870dff30f6fcfbc2e3ac869a5ebe4f50f459d209e36e6cb3617c443c40327c. 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/KRA381700509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d870bbaa4c6b3cf1a50aefc8eb358ba96e097d34cd2a519faf2f5576a4835dd. 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/KRA031210809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8790b86857c70967b57925a553e4fc8ceb2f31fbccef007648828e8f3277f3. 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/KRD441600002.