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 0xb7cb81b8dea2b8ec4d29e1c66581ebf2a0dae5f78c6e2c729f2e4e3e05218990. 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/62692e50-eb86-4fa2-b65e-8aab11f5513a.json and https://artists.proofprofile.net/proofs/artist/62692e50-eb86-4fa2-b65e-8aab11f5513a.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 0x9537d52a325c637f83893a1aa87479cac14f529acd8d4e12c70e5a513ca035cd. 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/DELJ81593322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bafe2e6abf56d64b35ef39340d3d9e63ff6b8f9586578931739521cf9f70d8. 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/DELJ81593324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38de2b77e8fa3f6411a6800ea7b22444797070542eddce06d07148040f64081. 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/DELJ81593325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d0bd8f0dee40ca0277495b6441658e64e9adf41a5de9fda0b2997f09e7f626. 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/DELJ81593326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae28a65ff948be69831d954a39823b8180e212c536b96823aa41292912bdf8f2. 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/DEVY81700542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c49c00e67a4e100ac3ca4cae284782cf48dcd5c141794368bbe7a827f2a47b5. 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/DEVY81700602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ae3ac4da1077ad2e101db7b47ca2bfab20b2b13887eaa29c41b7beaa4e54b4. 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/DEVY81700603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132bf4d5c15b311ad2178452fb71ab2c58befa0b40550bcdae63849b8bd8ebe3. 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/DEVY81700604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5a596bf26307521742287261ff40db98f671f5d465b106db626a36e54231ee. 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/DEVY81700607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef95d43ff31cd3010e2e2dabedf58a7b33701b5fb66f0283e62773cca33f3342. 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/DEBL61318577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe9b5a1a00e3826d3717b17e50300662a5991d80c64c3fc91c53d90cc22d926. 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/DEBL61318592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936b2c7c1afb28b222c54b8cd34c6647fdd3927e1a39fe7ad8d1be2f68d06375. 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/DEBL61318593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55030c020a839d5fac90a5e9afbbbb5b74ca6ab22e5104d02e8ca4f21f494424. 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/DEBL61318594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123029b262abd2c8f32da87f93b74d9d8f74c3714fff7e5f8bec0a851333ad69. 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/DEBL61318581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570ff5cf1f2f5751f4c931c191c905eb6a36e9910f54e8a64538f2db5ec1eec0. 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/DEBL61318597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80139001bdc13340e733584e08a5a57d4f6c910a9b7316f9f897e6b0a705d070. 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/DEBL61318586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825b8d2a7dd1fda34fad49a40ac28d249b21bd61c3dcea0d9cf6fbedbf7038f6. 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/DEBL61318588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0fb95378d6ec0baa455f616d337e09f01b43b1520441ee2e43cef00b47654c. 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/DEBL61318444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad08090bb6c8d9fef4bdd286f69b730cb24106952052ce4aae9505b465856de. 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/DEBL61318446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f884dcfcb276aa7f70e3e8f0e571e350fe1d2c0ff95014129cf7240aa48875. 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/DEBL61318452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafffb83fc5841ff2496813c99d9e6a8cb397d49b56d5197ec62e792ddb98617f. 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/DEBL61318457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079dd2a3538c60913a72a72ba70463460ec687a44e60b302cb53b357710f382f. 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/CH7812411088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d1fe7a62a341a97f968bbebd73b83051eabb6772ba5bff4d1cf5e2fe0e346a. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DEVY82300280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19132cc7ad28a16301b712c52ce8d16c0acb0f8b7327f4682c051c5372e5e57b. 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/DEVY82000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c49c00e67a4e100ac3ca4cae284782cf48dcd5c141794368bbe7a827f2a47b5. 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/DEVY81700602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae28a65ff948be69831d954a39823b8180e212c536b96823aa41292912bdf8f2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEVY81700542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d99b25320c547f446faf6f92811341817fbde52bac1251739e1adc266ceef0. 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/CH7812422153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408a122c11bc3988d38331cc3769cf5ebaf1346b383dceb3cf30dda187627f81. 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/CH7812536267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622d3d3206196962ed271615d7fcb7053155c11a95fadb4abee734993fdaf2b6. 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/CH7812532545.