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 0xd7687e8ca206e1f3ab4bd8caf2efb1b4fc9baafb3b0f673ad443a34c0a23fdcc. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e2474e5-7a23-4163-a00b-2ee36b7448c5.json and https://artists.proofprofile.net/proofs/artist/3e2474e5-7a23-4163-a00b-2ee36b7448c5.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 0x29fc3f98ce6373f67ca3044614726916f52808a2f2e8c7d4ba83f24359ba697d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN72182145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf630f9c462e7c03a22be3288e7b3e90ba335b0c5df242545c7e61f6b3dc0b5. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZK6Q2105276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb979e6e5b63a03e4c8491a26dd4eafe8aa2a0fc4a6c0dc4ae89f4aeaf483f4c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZK6H2151486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e51a82d9e75ed1401c8f429fa1bd6f0717b57b031978b6b85950e0384027200. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:00Z), 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/QZES82202592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b34ba13f3f3600ce7a46c98d043bc9737ffa4d532875313b4477857488adf3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHN82214720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe578fb95aa85bd2335732c6d4e9ba53e7ae8de9f9ae36796084caa81a21058c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWU2379827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8008d1c31c75ba50f58084a929685c696427e020d76d01f102431f6bd2603121. 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/QZVEM2399486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76459fa16aed013ce44181dfc94ff80af1a00adc8e447c08b11fcb1f4bd6553. 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/QZDA62171887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd9bd111962c022f913c20e6aaa4123439dfb3e97e84de72690b867daaa775. 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/QZPEW2457258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed2feff3c2f4fb8efb6c71d1b0d04971425bfdae7beba824222a97611a90f42. 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/QZPEW2457259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ff25035dd09b41585b56c36e54883047137af1a1037a575527b56f7ebf6b52. 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/QZPEW2457261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac09e64ec26b1332cf0dd9024734fc603c49ef936c64d11faa43a1d26a48341. 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/QZPEW2457262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8008d1c31c75ba50f58084a929685c696427e020d76d01f102431f6bd2603121. 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/QZVEM2399486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde915266e495b7c115c23f469e9eded04626d6cdf4d26d7530925879ade5efb. 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/QZPEW2457265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4e6224d57bd58e74765441d18113d14521b012c158fdc34b0241ab34e18bb1. 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/QZPEW2457267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032c34f5f69e63ee74e27d293b8db4eeede2995c4ccf9f68945656539058d470. 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/QZPEW2457268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5b47a5b8adf7856d7e9328ae9e0e5dec66a81d00510f01c02f6e91cf3b9904. 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/QZPEW2457269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5fa9bc1dacb42f8c0482e9bd855dac4a1f4dc6c5096d0ddeec3de10f38d23e. 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/QZPEW2457271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4856aa954c8217123536e5b84df126238ea59547cefde72233ee2c5ce375caf. 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/QZPEW2457272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1670aa62a3100448dff32789d0db6c2dc2022ad4e3d7c7a1bf60dc9838ef13. 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/QZES82147708.