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 0xdc1ccd28bbd5e1e522dfa3d01b4672fb7f03de8746685e286751cb0231c2f615. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ee1250c-f751-4f36-ad49-23dfa6b64c2e.json and https://artists.proofprofile.net/proofs/artist/6ee1250c-f751-4f36-ad49-23dfa6b64c2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: Grandstand: Production Music Of The 1940s
The Golden Age of Light Music: The Show Goes On
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 0x3a29681114b627d96f30a400ab96ffc4a329d1a16aee4a7f37c046b9f5db2e4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630854901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b71444f6904d1a673b6d19ef236e5cc217cac5c7f67eb70a2e6d7c1098faef9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6630854906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012d334ac354e98acc6782e6ee32c1caace28277ea2c1ad31fda2d4b56b70ad9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6630854910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8c6f423aee95bf04f84ff8ccd08d06cfc7839f84d5afd08e1bf8d1653c0a1b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6630854921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534f268cffa13c8cf67b02c84adc85a6460e8463d79dfb9fb83f5555f5f98bce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6630854924.
The Golden Age of Light Music: Childhood Memories - Vol. 2
The Golden Age of Light Music: Childhood Memories
Roger Roger And His Champs Elysees Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dc0192e34638b88642712c182a3dd86b1e80ff5ab052021d5ce16b4aa1e945. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630652506.
The Golden Age of Light Music: A Trip to the Library
The Golden Age of Light Music: Four Decades of Light Music - Vol. 1, 1920s & 30s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68489a77722f6e4ef917b6859bd59f4db0f51ee4f1e0bdbb3ea57b89a030854e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6630753407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042de7d1c4ef179430ffff1c11318a9b0c095fb0dede6083286889e4eaf51d18. 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/CH6630753411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1353b20185449c9e3d55cb6f7305c328103e8cd5365ee8ae14a54fa78d6af0. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/CH6630753414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a3bbb2976141a5bb542ce97468fb3ec78349ddda9efe7ab1d16e4928f8b3e9. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/CH6630753412.
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 0xff68ab5902d7a4af689e2692efb38c43686c00965771322fdb862ae002c90375. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CH6630753418.
The Golden Age of Light Music: New Town: Production Music Of The 1950s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf070b861baedcb0816025016c2a058deab242b7516f630ce510219fbe7a33c87. 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/CH6631452402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dd8dca249de3dab5468900d478265292b90b75e2ce9feb682ed111f0a9ba94. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CH6631452405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48d37656c1a671e02e95bce29da22d8deccbb5ca8dede51486bc0da64d97a2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CH6631452421.
TV and Radio Themes from the 50s and 60s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4e39086105875aebc7f2bc268bf99a8c8a1fd97accc966e1c4c62a685041c0. 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/ATR981123684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55362b1c8b0c5f1cd45bf52b63c71e78dcaa97e5b57aa47122e825fb63af7144. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ATR981123685.
Charles Williams and his Concert Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabb1b912f1418d708b992db22768307f28fac360b84143fd3618aa4d63a4557. 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/ATR981123687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba986b1df5d39d968b1d7051dec035243fd4cea5df67e4080fbb08446685536. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATR981123689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545c0b60afb3e94225a165ac759fc3a3e70efd7442c601945267b01356f233cf. 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/ATR981123690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0540ee4397c34dd8fe201231744764e06ccb35f1e45fc512b2281a77dd9faf22. 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/ATR981123695.
The Golden Age of Light Music: Highdays and Holidays
The Golden Age of Light Music: The 1930s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9406781a920aebc876626c0bd15a71dc023913ecdd117b4ca30d09e82640dbea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630450606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827b149e3a941abc51320b94e99a9c750ae9592bd9a4b9b41dfb3cd4e1a37d3c. 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/ATR981123797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79a21658725121a1bc34da2be72b0a92ea559d141f1bdb5926cb51450acb946. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ATR981123799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0adb2812d6f566a0830a3e70487b3f76b76f4852aa96937e7be74c45ec021. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATR981123804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d1dee6dc3a7508976003b67d6d484aab0593fd5580acdb98510b8813c9eef2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATR981123805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574a570e7d362d5c2c402b36126e7791d3030b4c24ea6056d934bde985f594e8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATR981123808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929e5849b06a537650748f1acd6d852e5be5335f5e19af7a8f6e18402ed4bd20. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ATR981123807.