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 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 0xaebdf1b10b398228015b7bf95d11eb37ce802b3a35dfa3f370a34406d895debb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67801775-9a34-4b54-96ea-1aae78a861ca.json and https://artists.proofprofile.net/proofs/artist/67801775-9a34-4b54-96ea-1aae78a861ca.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 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 0x6aa1fe44857caef68ac26a0551a8900ce45681eac33f68f6a41dfd4c51ea6090. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX201862631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9dd895c73e0ca64740247459da61252ca2f40fba7e52d021d977561686a220. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/RUAGT2355086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa897047cee49a532b20aa9f0b0c210134f4840662ba6c9266f7b5f1e473cc37c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/RUAGT2355088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bf3dbe652cbb42d0e76c2ba7564ad08c925ed8294a3b89f96bf0dabce99912. 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/RUAGT2355090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad267aa844a3f33e221e905cf6bdcc9d3f87634c379d574a650ba51833eacbfe. 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/RUAGT2355092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e94ebddc172aae1f8e73fa7ae51353693dee8699f9360304bdd4189186d62c. 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/RUAGT2355094.
F.Y.P.M (Scratch’s by DJ Worm & DJ Nik One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438692cccefd0a51b7039de6c31713905834ed640e716c651e9bca46662d1ca8. 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/RUAGT2355096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68926d6d55326ff075700e4a55e13b8f5ace08429803ccebc4d97f2b3a370f12. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/RUAGT2355098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b6ddb7cbb86016d229a4418850c406143f28e69915a0e26b2fbd1271d62d19. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/RUAGT2355100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b65511592d7ab5d38f0b7760833e8f28003a75962b56ef9a16034681445a7e0. 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/RUAGT2355102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb3e86693de133601ac4c1e7b285fc3f267e1b7866c900ddfc66991bca3a681. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/RUAGT2355104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6d7db9626bfb540a2914d467affd6583f82d3647189791196f6abdb8c11b34. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/RUA1D2502770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb5e04df486cbd7c5fa86f32649ca8ff9f1c8c6a208064d00b2ae4f8e8dd2c6. 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/RUA1D2502772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31913a10d81409fdd24adca21f20b1bcc0e0051b37f3762b68988768fc855d1b. 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/RUA1D2502774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170e22be67e0724914de52ed8c081d391da802dd4f55be3d1206529788d445de. 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/RUA1D2502776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b7cc55bed585225e8cc0cdfedf5e2dc5228e2e88c3f6331b4578cb12d5bb56. 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/RUAH62432038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63203a204c061f2801daccdc53865659350a8c5b9a0f88f4d1ee3a7c2a258e8. 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/RUA1D2502779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413ffc25bcf9e29d2194e38646065e7752cdb43ad8a20db8d7f3fd9e41d7dfeb. 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/RUA1D2502781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffe41f0c0d3ffa6631544398576a3f6d6761caf30fe75944d7bac0ec6eeb3ad. 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/RUA1D2502783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf268e743f6fa2187006fb2420d0b79276bdf15ecc984992595a047f64891026d. 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/RUA1D2502785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03de380d00dba469bfba5d8dab99998044d728f9eea610e1eefbe965fe993ce. 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/RUA1D2502787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67949abb169d896cfe1157a5a9985c9f2c08639e7bd2e8db830440ab3a37aacf. 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/RUA1D2502789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bc2df31d062e2cd3bfbab6428f46ede233afbbd81c9f8e3962d579f4f38f20. 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/RUA1D2580267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a5021735db81194fc31de055f760fac9c0f88d01b51519754a2469eecabbaf. 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/FRX202413894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd70425cede9a3a91ea2d78202fadfbd785e37b719e8ef0a6367fb777adc2ae1. 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/FRX202413896.