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 0x2541026d27c1d51b66f1511a65936d66a6a70b0461782e9f79002b9af8d109c9. 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/65f8c510-c93a-42c8-9797-03cd439e8354.json and https://artists.proofprofile.net/proofs/artist/65f8c510-c93a-42c8-9797-03cd439e8354.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 0x2e0943e99e839624d337e1f2560403412c0df72500ed196cc46dbf9619282564. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US25L1900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6732561b6de1d480f20d2bbde38d159c6d037cce97133981bc9a046b8c9bb3. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/US25L1900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc870a4c6160a97d313e493722f7889082ccf4adac86d215d2cf30bf50686f6bc. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/US25L1900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f2f38547325e942daaf196ae024a9cc47b5106b62c6a144437df8b88c8d3ff. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US25L1900211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231e21bd467ef732817513a3026c1bf5651eec99c5d4e36d7bd8e2585a2fa70d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:26Z), 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/US25L1900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaf36abc0f9eb5e10b7b0f11616c53fa81e5fc3c6c305f44331a21ea7ee11a2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUEIX2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa304600ae17f09e3949a7d9d719a0f8530826fde22e96576bafba9f197faeb19. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKW3Z2000802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bbcf08fc9ae4b09d05623868748baa2be3fd230461fe4c33dd76b9b7f676ea. 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/UKW3Z2201031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02af78ac8949a6e20f2a781bf122b5939316a5d49fc678e3ee031d123e039591. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UKW3Z2201305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6101788fc27ab12f7465eb9f1656c4130e90007da2d47faa087a54a2b85555a5. 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/UKW3Z2201509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2f9ad89edaa872a732b7e107a05ab38008a0e3372a8dc5a1a5774a64efe7c4. 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/UKW3Z2201511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f18ac1d8290c11197bb708e3946826699a728daf2e1e310b939ef5d3237941. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:42:54Z), 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/UKW3Z2202200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc9177d431866e94c1bae5b97bafb7fac8004796b113c4cb0cdea9275a9f8c6. 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/UKW3Z2303372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5edc5ce20d49debb4fadd173e63354f616393d144fba66069679ff66e2e61b. 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/AUMEV2026521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e1c8893f87ac7b0d37ce845e36f28860c94d0fd42eda3b68ac3ac02162de9c. 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/UKW3Z2400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b0be1395fb59020a73b626e8aa0c2084b8278489370bd2cb673a2269f0329d. 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/QZHN62428435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bcb55e26aea0998d64617fa922b9f5b8aa5bbb91584a458ff9f2f644671a4a. 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/USHM92161368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf00f885299bb3e9fad896f94e6054e03f12e503d4a40dda70f0ba749b16c453. 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/UKW3Z2303580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf00f885299bb3e9fad896f94e6054e03f12e503d4a40dda70f0ba749b16c453. 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/UKW3Z2303580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630f8b0d4affc22c4656176c8b5cc797bb419f8308ba12c17bf2df1c14fd36e7. 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/TCAGK2223354.
A Greater Song (Live - 15th Anniversary Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af1ad2240ebecb8078a820bce4af3a8bd393ee532997ea98b4bd0f697afea69. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US25L2100218.
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