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 0xe0c4ce2b8fc994c088cf8e5e242c0ae1256762244853d36f2128df0cb870966d. 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/bd36a2bd-6430-41a8-a85d-fe7666826978.json and https://artists.proofprofile.net/proofs/artist/bd36a2bd-6430-41a8-a85d-fe7666826978.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 0xf78e2cba4e5c8a46681d81ff30a5ba63284ef0ee87c8cb458ca30aca2c1c6794. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAEO1957554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1973c535d2382514268a441638b55c325eb542010fe157b1a608b53b076d5531. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAHR2301219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725302c4611233d66b6991febcb61cfdf9ad36f2e48734c152d7fcd831a72b42. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TCAHQ2393119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569cebda21aced17de877ddc5626609939d85fad3c5b9d19e5cee899677393a9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:25Z), 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/TCAHQ2393124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf238f204018e2e097de9d4e5932a3d5da4a4d6d226e3bdc247787bb74bebc511. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAHQ2393131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd471f55b6608f1b58476b2b55ec03befe53f5d606a08ae4dda77780051d7cf4c. 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/TCAHQ2393134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d17d8fc4346b7b71c75c2c6827010cf3d1f14bb97dad63828d93a388b2a0e0e. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:55:01Z), 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/TCAHQ2393142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0b324f5777593b62bc174e3699c569e60d6643b3e601ba84e56f9352064eff. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAHQ2393144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee475a4536b29f99fa81d9012d9489a65d91dcf21feb84d3d97a5cad53a39f75. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAHS2311230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef5215cf4d686f4864bf5e9ae735cd8e085758638d40951ccb31a5aa992ac11. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:41:47Z), 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/TCAHS2306575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a09d896bc2f33c7c3599a580e339200b43fd832643b5793b17d2f9f0b8545f. 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/TCAHS2306543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626a59e1012420a74c3c494d6c713df9f3ea2ac296d23507f2691dcffab5d4fd. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/TCAHS2306590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda14001ac46cacaaae9a272d7b9b8f9a8a3d9592e30d0670611dddbb6b14d150. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/TCAHS2306551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde68b7110991f644f855d3861c0f08350edb2937c80b35feb613309a6cacb02. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAHS2306565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6545449d2e0fb69cf08b0083df9ded6b9c478181b33c8cfd2a2c7d8b6ec5c0f5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAHS2306559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f3f209553d0402fca8325dc5b6f1c91a3a4894cc2a90f648f9d0aa52cd06cc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAHT2313898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97f14995c7aa8f7245b2000e0d9d39dcff93c023baba221664384b78d1b9097. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:34:14Z), 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/TCAHT2314892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e50b675984ecc7fda7bffdb46758cd21a043768083b420689dae17ca61d1e69. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHT2314878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171606b2aeaa7a6b04612af6e6b19070c445fd2fea19b53b9100f05e8d303ed0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAHT2314900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f0b2d17597cbbfe12f93e8b53137bc30ea0ed10e1a9b9d4ce09c6839a9a671. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:56:37Z), 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/TCAHT2314907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf87d019673cdaa42cefc6c94ba9ac5aff5bbeb71f7541f6b2c7247510cd384. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:52Z), 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/TCAHT2314919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c4a69912d26956811523639d3958c25573d68369998300dc7ecbf5df0a7111. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHT2314930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ffcf0c5e21d906b5e319544e8e571c53feecf1c6c8d09ac1a713ce6cc2c6a1. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:59:14Z), 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/TCAHW2423878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a37257c339b3e3b748e4c2a44d146685c99c3e91763b77520a7a7eb1e4f481f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:57Z), 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/TCAHW2423613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11bdee3ed96a02f60a7a49772130252880c5c19becf0b13e6b1a2b813930dd1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAHW2423566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7937cca96fbc42571a72ddf8a6d9f38971fa41a03317bb8d26f3302ec2f1615f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAHW2423547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32fa4275d11daa7dc7d1f62dd1f6c8c50b58846fc0691b3d71ebf66b67bec2f. 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/TCAHW2423576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a7435afee1a17b0275a8b0a606a6cb7c5b581b4f5f80dfa4b932830a127658. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:04:59Z), 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/TCAHW2423598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9a80ff3ffa5f3989566eb7255162a9d3e63a8b72054bcd9d74850d8435009e. 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/TCAHW2423583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706548989577c88dfa15a2d2676f273994d3f1252863dec567df208335cfcf65. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:41Z), 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/TCAHZ2450823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c7dad0c8c0cc0b528883b2308fb31881db00a1e9ed5f3de2f9db9408719977. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:55Z), 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/TCAIO2455299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5012d96be45c1dc7a2b2114017a0740f040b907ac1d10d912af7c0c6e96a9904. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIP2455333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d43d73bd0d928bbfcd64252658eb1bc29c32d9e1c6d5d0450a33e4f89e6c94b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIO2455356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf251745cabf606df7fd2b6eae996ff2356cefeb3095d6bae52cceea155a6802d. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCAIO2455412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ddf2d66b0fd93851e489dc79514d4b9ce8a100824b83256bd7882a828bc875. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TCAIP2455432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdba7f4462da9294c162a93454c9f9a35dfa44db278e18476fff50ef1536827c. 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/TCAIO2455440.