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 0xca036092820efddc398832e603d4dafc0a4be2c3fb712a9af1badf05ee19a002. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/795e8075-26f6-43bf-ae36-e2fae9d2d67d.json and https://artists.proofprofile.net/proofs/artist/795e8075-26f6-43bf-ae36-e2fae9d2d67d.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 0xedda2903d63474bbb4da5f832337bf3c68ada14566d20028bdd661171b347fd6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL5WB2300109.
Changed The Way You Kissed Me (Level Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f5b3a931e962431e1466c0a796875924e11bd578fdc79643ff42505d1714d0. 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/NL5WB2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb036f8242582bd8206471d26305f15f7b435b1730cd6dc6a3c1e47a49ac081. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL5WB2200055.
Science (feat. Sarah De Warren) - Festival Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824bfa979abf5bd8086febb95bdc690cae588ea3668a1eb5f2f7ea2222f8e5d4. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/NL5WB2200056.
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 0x5162b4a9512ec3a5bf64be90bf225e669947ba4d10a71f37d56f7677988a2591. 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/NL5WB2200043.
Losing My Mind (feat. Chrysana) - Level Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd65b4c1bf23eb8094442378d4c5f25123582b81eb2aef5b0c99aeb6cbda810. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NL5WB2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e494d943849c520f403109e0ba954434d1d0fb786d7b85d8ef9ca3a48d4a3f8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL5WB2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d31c13b9434006cc445e7d8ba3538abf73437ff6f54d4efc051fff9e793f8f8. 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/NL5WB2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa529012a9a74df49a8494d77f951f0c54b03258ec992aca5599eacb82cf25196. 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/NL5WB2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41169f1cc4c09e2e25825fa050a8256d4687f6ef59b44772249131c64dc745b0. 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/NL5WB2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55735813dd285bc861779d1453f0f6f9769d24fc69933daa1eba922281ad70c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL5WB2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c511de0c981295f2a866349dea7ff42f063f76d4dc309288867d2d717da5e2. 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/NL5NQ2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4712ecf8d16db9aa1df5db4cbf1b60e7ae5fc3806825e6946b25a2e675070e69. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL5NQ2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d567bfa0b8050d6832fcc94ec17baa1a3692c66c674217a8e986dfb9bc0a193. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NL5NQ2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943d5041303f9fb29d3bd7540b80018a2d66dc0517e03c2cde1c0c2d490be0a9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEXO62062342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19161103b3bb55492706c25b6eab881732b2fa4df3ee168b80f88801fa393d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEXO62053495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd029deaedc5db27410a7748b617d4d8ef5637bcee4fb66fb7f674b87b38f61f. 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/DEXO42083028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad55d9a2ebcd26384f84cce7d1c573b0ffd518d647280c786ea23dc11a96a0d. 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/DEXO42073694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eeea20e3bb4facdbf4969aeb8415223e1de9f7ec79e05e824ef825fba1adea. 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/DEXN82064985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc081a0fa4fd60cc2b179c86840c209bcb593180150c069e87014596d0e9fac. 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/DEXO12040937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d9bbd9e1891cd2716525196ef4524bceebf81024547247f353dbfdd2caca6f. 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/DEXN82089308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5326f387842b5ac87cb45f1917e03354597299f1452b382701ded5a53bcc020b. 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/DEVU52069961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2046db085f54df7f1985012a011e1676d2044bd061fde1c37368c7f6f886d9a1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKPL2087385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964652a493f89fd45cc0d0fe77b33d297e5994e3ba30ca073914f604d0f9dbb9. 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/DEXO32003549.