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 0xa359e6f057a75dee492732a85e959123fc97e618e9b11a4214a5d088f3259444. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e891523d-658a-409d-8b22-5c679a4bce59.json and https://artists.proofprofile.net/proofs/artist/e891523d-658a-409d-8b22-5c679a4bce59.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 0x28f00dcfda3217eba6e3816a41c1e116b684852dd1b9a00589319706fd18f522. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPW462433847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c94d9e62f4392477332a93a429bb02f5e38f6ae4527f03a19df8843aed6aac2. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:22:54Z), 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/JPW462433848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8bef6e156d1f3fb136702522f90b86e7716be2a1b05be9a1ea69d26f0c3b74. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPW462436447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b36c773f2a84af14c5b570c2f36f3130970d00baeec29041bb2f0afd372a300. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JPW462436448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d92bbe5bdaac04794994a96e39c7421e6e4c9f204b783fa077a994f1da7f9d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPW462436449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf471dce8aa54c96402ea405490eef8263d6d2835eac4ed312c649997b6e2bdb4. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JPW462436450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7b05946f63f016005e352ccc5ec6f36cfa7b060fd4adcb97fa421497c3a3e1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPW462440604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1c3c802a79d26b6c30e2e1e396aa831b4952fbe742869d5ebf23178c65766b. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/JPW462440605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e694a5c1db20d8e7b7aa259ac4145f842aa5a4ae142dc194ea6918cca04af63. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPW462440606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d8524740678363b3945c2fbb70268a1565f9532edf1d674775f9de20e3e97a. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/JPW462440607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b839ef164703e22ab0c98d66446d06a7e58d66ba068b935adb6e779ab053af. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPW462440608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bf9c1904bbb5d086a4c6bc7b3f5e9174ea5ba12d7e25e3f399ff97b27a02e0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPW462465822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102eb8607fc6b40b15938d20d30112d9427496eea5def5a8d1e8f950fcb12dcc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPW462465823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258cf8cfab3a54fcfb002d14ac4b0dbaa8ce4c4bf02894ee249739229cb66c6f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462465824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7df387280c6da166456c3e9fa97ce8f6e9b1f9d742e021bff90d6839d300242. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPW462465825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2debfa1d0a66bff3bd357f35dd11ad65ba9e6833ac8d06c68b792e99182fc4c6. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPW462465826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac342bd0031e2b0a46629c27f689c342f014932ba4fe56658a2fc10903e54a8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:39:08Z), 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/JPW462502003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ceb84ce0c88a72dc21e589d878f55481239423daa61fda17ffb85139261cea. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPW462502004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1096d824568769d829764e3f694a275ee9fd9aeb47b7bf4dce24fe2c68cd07f4. 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/JPW462502005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9144ec4d5a5fdaddd3c9e23fcf759d1ea16078273c4f528272f2b11f97d26266. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/JPW462502006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5abaf0678faac4f26fe95ba8f3487ef6a498da3fe1b991429cd6b35de52d86. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPW462502007.