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 0x2f0ec3434205a873bb8f978db83e45c624a4231a5f6c759735d0a35be07acc64. 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/e16626bb-3ab4-4854-a47d-790665cf7b7d.json and https://artists.proofprofile.net/proofs/artist/e16626bb-3ab4-4854-a47d-790665cf7b7d.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 0x8814642ac5e74502344a85af3bff1077cf03d54a9bae0ad03def086c5d6ea61c. 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/DED990500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf214e0299630ed69fb1d3bbd1501615f9236936e822ca9e00969c28326c3a92. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/DED990500002.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f251cc86be124d55e55c8844f43d51907ac14913c5e1262c911d9e324419fbd. 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/DED990900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e81e8bbfdd3065df48748daa790f35fc9bf123e7fa35e624da8b42406f4210. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DED990900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458710d0b4612892c4cdaf350c8a14cc67e1c8fed81a98ae187478dc5eaaa4cf. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DED990900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50d7a577eede763eb207ee65f429b1acb9bb231b3b8ec2dc20d1f37fd5aa5f9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DED990900176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bfe14a20d5d171ed4004ee24307b4a0461c77fbcab317780455440bcbfc0cc. 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/DED990900187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c4631aa5e24268cbb050e7495a19fc231002d733ada47d4aedbd442b5464e5. 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/DED990900182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d98e997c0cb633f4955cee6aa26fd81ad8ee70c70197c8544474f0ea6422b17. 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/DED990900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e36c1c7812737bada85073175d730081df68cf6ccf7466ae8d438e3519bb5ce. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DED990900191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82900e65777b77fa22d56c97a29441623192c1e8c209add1214a7b502de7339d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DED990900174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853b6569ff876b2315b61ff3f4962fcfc9a6d76c125bd96ec28dbacd4e92450d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DED990900177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e2609f171fdd6031ff82f38c9d5da0598f9333392aab18042d01a7d16e1056. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DED990900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878030c9c86f5ff733c534c493c2a35906534eb0df9fada9f33a875e6e96be6a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DED990900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53539577f4ea5b0f2fdbdb3e94aa1a7b293c3a72bff2445469ba2c7256153965. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DED990900189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a52c63c0e196686d82689eb9d2ed6717d613b5e001eef9a634b934b9f6768f. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DED990900190.
Para Un Mejor Mundo (For a Better World)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b180abddb4478479b9cff09aa03b80047d689396f277c938d270f156b50a2f. 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/DED992100232.
Inward - Oriental Spirits Meet Golden Harp (Relaxing Instrumental Mood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eef1255a9cb80a80d8e76ee99935ba54a0ea6f1c4625bbe226ad6920f7a853. 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/DED992000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd8e7d60a3ada5a69f6b379ae6e97f9673b6a1bab32043830834fe4af73777a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DED992000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f742abdef622d06cbb1c334c97399f632b10766d859b520692df06ac4174e15. 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/DED992000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7772caba16aadc8991dd175141a68da4b79f425f3328dcf05ef3e2fea0d9549. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DED990700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eef1255a9cb80a80d8e76ee99935ba54a0ea6f1c4625bbe226ad6920f7a853. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DED992000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b6394db4d4c762972535b62058aa0acae7d81892a8606188eb4e3e9d0e0796. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DED992100122.