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 0xf58c50e8ecb84bf1a3a65ea00c307ac29af1d0eb7d44d120c736f5ec3afdd036. 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/a1eb5603-f373-4110-acd0-37c550fc6323.json and https://artists.proofprofile.net/proofs/artist/a1eb5603-f373-4110-acd0-37c550fc6323.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boom Bap Type Beats, Vol. 2 (Instrumental)
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 0x967d6b8b15f410ede464e9afbd9752a0170c3647c08b64a26d268d3aace01400. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZMEP2206855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e484ace663d8d607abbb0bc530c0e79e13f0925d65de9bad87cfd3427a7706a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWT2211028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb7d9bf2cd81f1093d1d8f2aa1992ee4072587f9ce617a7bc7d4d358f9ad5d9. 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/QZK6Q2264873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44940f09af6eb007b482db8ce28b61b537420011c3ecd0ed1febca81157a0f2a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFK2306818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4edc906d0c4507e8155a55eeb164dc5b125ad56cbdccd715867c1d4fecdf2bc. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USANG2408596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a2ce40f3f6f8098dfe1d17675186bf7884148f74be9f45c2e2dbad5667d903. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZTBF2424059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d6379d9297457bfa514761705ca7f47545b6de72e3a8f23e519a0d22fdd3f7. 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/QZTB92403262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4f9f90528b07eb66e291f594f985e50d2f96395e61616e5cfb61465668f85c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZTB92498086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874b46b3bf853211d8d989628b0991653de63f2bbf2da28e8f897c253a45a6f7. 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/QZWFW2471139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb3d08b34c07a465173ef0c42c4e9f33fe21e1f263ba4fbb573f8ee9fa15e06. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZTB62433403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e32425b7836bbbf3071b9d1bfdbf5f22b7914008aacb55b207158e4c6b4f10. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZZ772427182.
The Mountains Are Calling (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84413886b6ae89cbe53fe61c14af5b44caf193b2d55d922edc3b4942fb86fc94. 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/QZDA62528247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1aae0b8629c0e26d83277d3661993911302c01fca33588952d396c534ab0ce. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZHN52536784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f46668f88c962f5b62c2c9696dab42278b361ba8a9a530b40f45ce8a12b94. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTAS2550500.