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 0xbc1e7d8ca6483ed8933e3fa4d95116fa01195493cc392ace20f21446a73be1ac. 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/8713c014-1999-4fa9-8f96-d82603e3d753.json and https://artists.proofprofile.net/proofs/artist/8713c014-1999-4fa9-8f96-d82603e3d753.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 0x8f8a938d22c304cc514edc95da1114e642ec43a0790963e63f0d153cf71ca2b7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN91969758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcd6f49976224fc2b29e3519f44e8031de93ab760cc491d5cc4b4d5c218682b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ62067680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecd4f37c7f1093ebfaf63249fe97061500cf09ae438d490639ef9b283251147. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNC2006520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab30fce6e1ae72dcd6b622e042c9aa101f53c74551b3b56603407ebe5753ec2c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR9W12127755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aa2dc48f77070c9bd92c173bd0c41b9bb487323764d49b63ced86a51e4cc66. 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/FR9W12128343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94ca0d7b0ebfe4a6f167f8c232b7ed619fbd0464257c846e628b447a28712dd. 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/TCAFK2191245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e1a1aa881ffb0e1ce42b741f9a5c1f16466394313f201212f6477c2c28f630. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAFL2122052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1480c09a3d6fbc790fde65ecec4518eb98898ecfd8cb2f42a3b3fb98d9d810. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:03:20Z), 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/TCAFL2157547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f6956e3d5c1e403369c9ba14f6d4586df6bd440e9514b69b761a987d8f4b6c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAFM2132413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60a3ca7fa1c2e21d01e70f80a3e9273c39060f37caf812f084265429343b8c2. 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/FR9W12133457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42e47c29c83b5c2270ea09727b2867b1fc6b202974dbd6017f6649849f49b3d. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/FR9W12206619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaade72d29ab8ed43788a1461c310b35abb5347145d573728479793a71c14891a. 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/FR9W12207693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4f99a2de5794b62ea41fc247e89843521b39c49fb33ed327247ac8ed9ebaf. 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/FR9W12207694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c12ed8080a951c90ec5386f76cfda2683e48c88112ded5470a71110d3767c6. 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/FR9W12208671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe305cd2547eefa934482d600db10190784647b13f8a4245ec914c7f10c9446ed. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR9W12221582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5da532fa4ed96bad0a28567076f3c629e24857f9407580b509b8db5d92ca7da. 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/FR9W12300363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c22356557c793cb67d3835010c4f7c244c04744bd27be357ae919bb2b0a524. 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/FR9W12300585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3b0aa2ca7db90d96540a4788793617cd154b7b8fa1da8930b94924036223f1. 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/FR9W12300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5da532fa4ed96bad0a28567076f3c629e24857f9407580b509b8db5d92ca7da. 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/FR9W12300363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad6b818a1e38f6d6745531cd3d4962ee23ac9f92f8cc8b4bec94882edb8eb2d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:54:25Z), 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/FR9W12300589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79d7927a4accad4e803c6768c22647916ea711e7524b27ed7906e54ac4c1e85. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FR9W12300586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ddf926664621ca2b1f9bd92a135fd3d44accb10278c57944362ad3cfccfee8. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/FR9W12300591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c22356557c793cb67d3835010c4f7c244c04744bd27be357ae919bb2b0a524. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR9W12300585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43cbe091498b4510d8595bb693c64db8e117bd23d7351f05c3cf53ce4db0b37. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9W12300593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6917383a7d646730f4bdb31f93db2932f94866eb1a394a881187d8d05b77884a. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:48:50Z), 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/FR9W12300583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753448def09d7ad41b2890d36ff0e95d1c6377e0b4f31c05bc9eb3f574171186. 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/FR9W12300581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c431e1252d5e4e6edb8dd0470d83e6a33d650f36475ec9eac9f33bf035cfc5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:33Z), 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/FR9W12300590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8619b8e2e0fbbee63a6e000dd6d792b4aca20a9718ec94da90a26a68cb8319. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR9W12300582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fd59f38580441bb03356830b8f0d8ddba6c0ef305065ba9a5158ba7ea94ee4. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:49:06Z), 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/FR9W12300584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a5830385b137aea2aaca4a0f7ca278b610ba12db6b21f791d3c348b17cc28d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:51Z), 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/FR9W12307010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014fdd056f7406a19b7737c31e30fdf51a48087df6611e871f3ae3085d3a3198. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR8FB2307220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f5c675218d75b01baef69bfd728271d5f74a6ae2cd2340d16c01ffb43dfb32. 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/SE6I32273208.