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 0x9e1555c65da4be2003fade9d556d6fa4d488b7a11178f5d52001464668239115. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/075f0587-cd72-4696-ad9b-e1e0f7b6432e.json and https://artists.proofprofile.net/proofs/artist/075f0587-cd72-4696-ad9b-e1e0f7b6432e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
61 Penn (10 Year Anniversary Edition) [Remaster]
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 0xe32cdbcf26139095642712f212355d7e1eeac4d55c2cb7b27378a155e0cfce78. 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/QZNWY2090086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533334d7d0b4e57b839c67daf230105e4212c60ccc86df9fdbc458ab1eb8fd78. 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/QZNWY2090087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91a39392182bcbb74a3526b9dc2ce8d2c368f83f00c0c5dbf558ec3218e40fe. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZNWY2090088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f41ac002f002ebbe74f7919ca39152e1ef84fb2dcb4b44dafeaeec1127e1c34. 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/QZNWY2090091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaadee0d734b6a3a6f965ba2b2f1c75ab4b73d5d9297214fd78c4c50628bd3e5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWY2090093.
Mt. Chill, You're Climbin' (2021 Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777c4140ad0da0e4ee8a22a2625fa573faa9bc588c250f47603fa87440bea814. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZNWY2090085.
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 0xb0a7fe920ccac61a4338af268bec1c1fdf6180a12b968a5bfa09d038c3eb92d8. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZNWY2090089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04c3851cc8542c41e158eef7608febb45f5fa8e9c51c069cb6b3a96112dadae. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZNWY2090090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b5045f9110e9708592fd5825d7215839106d5a9718f5138604ecc105b20861. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZNWY2090092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b978ef1c287f72c7f2b46f19ad30205eb8b88155ab6268f59e8182e0bfc35fb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNWY2090094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a43dcb2a6504f17c30a2e18a79f68c776ed0d0e06143970a6346d87644bdbe. 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/QZNWT2087109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5554d192d4a32261c2d8153c16534d0ccf40baa41d17009586fec74e41c02767. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZNWT2087113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577f0e45d31a90f60823a9c19090496f9f5b18628416395c31568c52e6e79be2. 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/QZNWT2087115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6573e7af509bb5c0640332628f1ca0e51fc4d4883e36659cb9ea0d68f86209. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZNWT2087110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64faca8cfc4f8a80499c91b0c3eaeace34bd18037aaf88a7bb8d4a817040bc8. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZNWT2087111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa12dc149aab42ace8769aaa50c69bcd4408d5ce760b17ac61487820a9f066bb. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZNWT2087112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737a4cde01fa0994c3f1f86d8a9a1df709ad03ca26f2478f38520927aa1753fa. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZNWT2087114.