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 0x69c3b0aac2522dd2a8e17785e2bc6adc778b232416e3a01d93e0366fcc143704. 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/3f05eeeb-6362-4b23-b543-a286fb7a12fc.json and https://artists.proofprofile.net/proofs/artist/3f05eeeb-6362-4b23-b543-a286fb7a12fc.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 0xbe59be39fda654087c68d94371deec2196580bc256f9c77d3bf33c0d99816674. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNWX2192324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168cf14600dc648a8a0017dd0967be0df26d06082997d92a4e97b60bab00087a. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/QZHN82227390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168cf14600dc648a8a0017dd0967be0df26d06082997d92a4e97b60bab00087a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN82227390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706de383f01868dc99e938673889ae95131a2b69a49ea8046bf76482c1994b4c. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:57:39Z), 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/QZNWW2205580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706de383f01868dc99e938673889ae95131a2b69a49ea8046bf76482c1994b4c. 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/QZNWW2205580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f180d82a10085085baad3ed96102cc2bccc96ecdec6cfa046d4a6f6915f3b23. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTAT2217975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f180d82a10085085baad3ed96102cc2bccc96ecdec6cfa046d4a6f6915f3b23. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:58:00Z), 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/QZTAT2217975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976e3c43760b450aaca9b57f70c4e365432ea51948a5d83c67fdfd64686602f7. 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/QZTB72212037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7959e83b60d0a256213882bd9427e8cfb944b792cc82b8d1dce3e6456fe6d607. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTB92245172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0096cb02b5bc670726f48d8bcbcba3ed930df9bd0b563cfa9e8c81a6e80f1063. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM24S2303147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0096cb02b5bc670726f48d8bcbcba3ed930df9bd0b563cfa9e8c81a6e80f1063. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM24S2303147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8f6ec84bb797ad31cf9fd687aec315932ce87e961c7939e71b433feeac5dc3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM24S2303999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8f6ec84bb797ad31cf9fd687aec315932ce87e961c7939e71b433feeac5dc3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM24S2303999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c2006cc73a737b594599de9bc000876ee4ebe3c0660412cd9e68382bf2faa1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM24S2304338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c2006cc73a737b594599de9bc000876ee4ebe3c0660412cd9e68382bf2faa1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM24S2304338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d2bac6896d6cc09f413daf911bbf4da808f5973308a88ef7ceaf4163eb955a. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/QM24S2304810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d2bac6896d6cc09f413daf911bbf4da808f5973308a88ef7ceaf4163eb955a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM24S2304810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9c5111b38692eacba4c34141a93aa7800ad5286b5d04f7f910d38798b3db22. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZPLR2311321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9c5111b38692eacba4c34141a93aa7800ad5286b5d04f7f910d38798b3db22. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/QZPLR2311321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702c9536ad960d261917365e7bf4e8846142f3b0f399b3786e02c16dc5ad034c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTB22394285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc733fd3fbfb10f65de67a8c6db330b98264ad14c8869406edcb4774b27990e. 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/QZTBE2365627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863ddeefa1ed41dff6f1767f06f439a2239a9b01b1549bb275a76568999c9ba6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZES82417362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa5ffb4763775f503c05252ee46ae7200c4ea9653937cd458dd2304622a98a6. Chain 2 (Bitcoin): anchored in block 957535 (2026-07-11T07:11:01Z), 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/QZES82417363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b55655bbe3ca151015c95d8f162fec9ea5a0bf258ba67903624212d2ee7e29. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:41:43Z), 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/QZES82417365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0568f010f949d094fa33412c1567c37abaf732059f9d7015a0b487fc6f60a844. 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/QZES82417366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0fac838313d6c5b1dd332803d493b1162b7dae1865566977ff57ab3a2a6bc1. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:26:01Z), 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/QZES82417367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6001843aaf1a3b1430c3d954a6ee61c02f2c2f0ff4cc5d275ba17965a324b176. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZES82417368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afecacaff07dcb57e5e43eed2cc9aa13a63c84cdf835ff5a2a10824ec984029. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES82417369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246360e23eef03e02987ff371b094ac0ac0c467274dff81f4682340c695eeac5. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZK6M2258065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e173c2fe5e1e8d3ce939aeec7fd5cd07ae9f500208e2d5c91b1bc40125c79a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFR2370374.