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 0x1e89d93c82a144b102e364464e88bd4e6ebce03df644944a427f983aa476c3c1. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf431c39-a38b-41f2-b811-6cee6b2ea815.json and https://artists.proofprofile.net/proofs/artist/bf431c39-a38b-41f2-b811-6cee6b2ea815.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xbeeb2e7ee2310ce0431377f1e059943982b9e482b66c2da898bec8a5de4182fc. 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/FIFDP8301100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2770b9ee3bafc6fa072a79f37819d22c141d072f648ebfa08fb9d8c1e7a87789. 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/FIWMA0500531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b452144bb4a0e965f88ed7ed03a1eeb2c6ce044d46174222976ae2cdcc3605. 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/FIFPS7900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795c0bd36c2bb0107c47da31cbb5580f8330db2f212928f6dd063226c8172365. 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/FIFDP8000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98d12d9feb4f5d8153a7e639ebe6715095ed49fedbe8d2ff90a583ab950fb27. 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/FIFDP8500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7571dd49c0b30f2a1151a6be1fc9369a6ebf4e96d048ddf3e7216179afee3f67. 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/FIFFD8000300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebcaeea20a5301a41979f44f5fa50f7269a84afd299bd74a7690b0c3c45728f. 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/FIFMF7100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a31935c1e903cb38c597b8232c108d16fa2c5aa434f7472ece7a9252f3815e7. 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/FIFMF7900900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032e9c84f092942c44ad8ad59838011a58b8ee474537e8884ec3c79448036818. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FIWMA0500534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267750f815c2aa2b9ef59cddee1963c3c550db1a5ac977eff351405c449e41ae. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FIFSC7000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b130477c2682afcea01e75e63e06280661b07cdc6de4efa31e07199be53dc3. 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/FIFMF9800239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573ca5cf97a8774f6319448dd53339674dcf821d8ba93bdbb5572250873d3a65. 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/FIWMA0400680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d5cc20491df780e2f86d6618e87b644080c87879208c4bd46007cfcd84c980. 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/FIFPS7900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b6e6b427144b6319a1b29b64c959e74263a04c3c33b4faa80c2dcfbbeb04cf. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:10:08Z), 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/FIFMF9203719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3871f1e3acee7b20bdc9791968524a0478e5a3d60348f1c4acde3c0290bb9dd0. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FIFMF9700194.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d629dfaa8962adf6358908fef07a3756737db0424b09fc379c5c40ea3db632. 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/FIFDP7900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24565e562c3ceefae17908ddae4227e7cbdc377fb82d0309f9b08b875dff4caa. 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/FIFMF1226916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ad39c88c0789f52dcd04cf8aa372bb96acc203d5895fd03ed2bb3eb9cfc010. 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/FIFDP8000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f88224b59899d390e2977d19c3373a578f4df50650dce1b88dad5e93dcd0ab. 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/FIFMT8300300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851c670f48777d46d5b07604027c147fbc3a02bfa3d86e5bd4b9540d990f33fa. 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/FIATT9700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500ce65f5c6088e6504f1148ea342d05ca50ece1cba335f03e18abbfe85acbd1. 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/FIFMF1226917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d3f19a6c588c902e4a63df67eaea92a2d31c824a7449a83826f33070b852f2. 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/FIFMF9201601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfe463c24083d9fdad80709d130cc2b60f92a191d18aa99ad613e6e587effe7. 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/FIEFE9100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb0f0fa740313c77fd3d7505fc4c6eb9addd9b9d8c7afbbf0d147ebaa01f27a. 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/FIFMF8600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef748d75925da9cbf589f28de0fc798419973c3dc0a661a0537bc3d572d5ad5. 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/FIARA9600205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5b0c04adf5e4629ffaf35eb86a7130beed88192147d7c43df04fe30db68406. 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/FIEFE8500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67498c8eb11be2a9cc98c9671a3449274e4f1bd3fee517604f850751ff48df5f. 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/FIATT9500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b920c449862521b286d383147b915b4bbc885880b668be635e1ae2d264282b. 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/FIFSC6200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ad39c88c0789f52dcd04cf8aa372bb96acc203d5895fd03ed2bb3eb9cfc010. 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/FIFDP8000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c08eee5898692d31104f0faa3de0128e1247c6812948dbe858524948a69a773. 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/FIFMF9500674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db875044c852ba284c171413fb1c2fe5f79758afce6adb09d4e8489fbceb966. 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/FIFFD7800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f502c5e08beaba95074f67f475de247375c54c675dc6f64e60bcc0722ae3c3f. 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/FIFMF5200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669904434ad50069c50a17de5557230be73fdf743f03f5a49e2bd5a14b4acce0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FIFDP8300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8de5261578eb7a74d21951fbc2db1353da94e04451558f84f28b8f644987cd. 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/FIFMF6200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd018b4b2f826992334b0994d9ad4596e120bddb4e85bba9a2d0fcde2a50939. 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/FIFMF7700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2484251bddebe03deac31f968b9464b68a677556202f0f641627c4b894a7f241. 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/FIFDP8100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3396bff2c486d9c92234f7f45f94e033fa0f7b3094d229dc36a8b549863db28c. 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/FIFMF7900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271fe8f87ff42a33962796a9a1bd40badea215c3e4f27ecece9842703d7d5534. 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/FIFDP8900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b6e6b427144b6319a1b29b64c959e74263a04c3c33b4faa80c2dcfbbeb04cf. 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/FIFMF9203719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9915a7913646de08c805f9b5b50d3fbe1cd06ab81be478e2344e89a93a34c9ab. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/FIFMF9700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e7c8c0a480c85d3318fe35a520f471b1c006c39b63489d839b03dfe4d40101. 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/FIEFE1100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce47ced1d3e2d27387ce6fffc3ecee6291face06f909fcee826b9889670c731. 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/FIEFE1100104.