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 0x3a14f57fa3ff5011b6e104236c48d8faa40cbf29089f3eae2f9ddb0843d71bfe. 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/115f2d5e-b80b-4d48-9ba0-8dac503e7560.json and https://artists.proofprofile.net/proofs/artist/115f2d5e-b80b-4d48-9ba0-8dac503e7560.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 0xf51e9bc2b48c98770387fccafc32eb61b849bd1e540c5c8fe43541d98ac68e6d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCADF1753456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ca52aad6c76f0c9ee4ad8f2bc1407fe20205a857d05c20d0606410b41b60a6. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/TCADF1753459.
My Faith Looks up to Thee (feat. Rebekah Rafferty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde155b716832a4054c6195fa46f8739c48bbdc59c8559cc1dce80c0ecc795dc3. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/TCADF1753464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25992bc1da6cb62039404b403bc38e349dc956b6f1f9bd4b9aed56e255cf169c. 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/TCADF1753465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246b87c2c686b7ee3cda4bcae5097487f8e0316eff3c8f30a4e8952f13a9bf38. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCADF1753466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b3eb44283ccc69bade8447dbfdad986c4ee590d9d930d0f28c81eda699234c. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/TCADF1753471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8d8a31141583a50b358108e1d1ae442ea893ebea8bc9de0de937659179a497. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCAEQ2038630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7267d5e3000389cd18c5d92f049332d9e5a47b4e1bc12300c6c32856356e4a23. 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/QZNWW2130535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5b649c6f0aefa79665bdfead1d318c5be3f92d99ef752679c150e03346635a. 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/QZK6N2258343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f45ba11762b0e6675b16e8731c0a19c77cd0a420f9d9e742e9fc442e27e64a2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHN62204159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c078413bc23582b4b212aaeb5e9649ab670e45114e1b4f845639093c9ed91df. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QZMEP2221990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba87c515899a36ce516cc0093aa48094b9e68af361a73038a377721bc89c1abd. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZTBA2353878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2029c55ec46e4b83a3544b6e104aa50a54cbe2e5a6f897f03013c56ccb2a7a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN72483250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb67b4ead1bb300f32637bbce96c3b1957dac5e8632ac02c95156aca64778d24. 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/QZGXC2300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78278b949459b07794909b9303d08ec0c571c4741720ade64a5c247e9852bde. 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/TCADP1867757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c5ffc18e1b166af70a6e11d890532b98798fb3362e4fd35d11d5180f4edb2d. 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/USA5W2200741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb67b4ead1bb300f32637bbce96c3b1957dac5e8632ac02c95156aca64778d24. 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/QZGXC2300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0a738c09ff93a160f844cbbb877d257cb28a33bb3da995f72e9a8bfaa8a499. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QZGXC2000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7f944e83a693e6740bc8a328bab74af62d0880682ddf2e752df6f8554e7171. 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/QZGXC2300632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c0a7d1b14fb32a772b6bafe455ed703394a514c0943e7258f56ea71a089454. 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/QZGXC2301138.