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 0x3e764fd9cd18f0fc3e76f086f59d4c4cc4816fe20fdd47bf73cd65f745d771ae. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75765148-3ab3-4c91-b8fe-9f814e151632.json and https://artists.proofprofile.net/proofs/artist/75765148-3ab3-4c91-b8fe-9f814e151632.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 0x250a7b6d108ccc34ff881aaba92c73e9143a81c9e5974e0157dad0b3d6397678. 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/US25X1900528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fda7d1d8544742fdc2872ee74d70ded04ed7fe0896dd332364455f97b4a88e2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US25X1900530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a9abf7e61eb8cfaa446db57460028c4b47e958ace917848008afe42ec5b949. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US25X1900531.
See God, Bare Your Soul, Ascend Straight To Heaven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37447efd45d741af511ca88b5317b81de74acf3ad9b23bd6ae82426424588110. 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/US25X1900533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf211c6680aaa77db2009a9f9cedaa0930dc298b4c03f4132e9290668c97205d6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/US25X2103940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e450ed416ceb166aca209446f2a0f66445530f4f56f890303cd64ccccfd5704. 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/US25X2103941.
Every Moment Is The First And Last / Absolute Sensitivity
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cda3f5143b85c3501de155e459b5c7da3034c07095df33c222fe01f8ace8477. 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/US25X2103006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e262e72cd7ed9c8651ad86b505f5efd6c50c94c7e1ea2e3269211d8f26eea9. 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/US25X2103007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a04d094e576046291868561937b8b2b88d3a5847ca358a6776dd3b01589cbe1. 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/US25X2103008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da99d2addab30550aa8055e087cc45fe55271fe47bfb1b70c3ac89223c4bb37. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:54:47Z), 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/US25X2103009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e738146297d5e877c6cdbc4aa66aa68bd92fc405b414c448aa59d9a36faa14c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US25X2103012.
Ojai Orange Grove Concert (Live in Ojai)
plays two versions of a melody by Tisziji Mu​ñ​oz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef0d55cdb96a15237d6f7447b96d1e861f3e8711c2b5a8964ac73b716d5caac. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:40:27Z), 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/US25X2302399.
Excellent Traveler Theme, with Idris's Tenor and Carlos's Percussion in San Francisco
For The Highest Quality Listener Testing The Limits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c0a5882eb3d8feafb454ea2064b821d0ecfd3e8b5b1ed71201bd7f6c51b38. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US3JJ2401130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f7a899f98540ac4a84e1d66b38da188a37846db5e83f2dc78a267081ad71f3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US3JJ2401133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3749cf197457d41d52d67d3db58f802bf179aa41af5a6c17a35a3eff497a4e90. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:08Z), 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/USUM72500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3749cf197457d41d52d67d3db58f802bf179aa41af5a6c17a35a3eff497a4e90. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/USUM72500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811af07e48ead69c967e6211950267f0671adc4c63313795b586104a9f553b6e. 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/QM84B2367004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae40d075533dc5b0b86748abf7c31e44a413c6b49a047749856dd9046f5de6c. 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/QM84B2367001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf6054fc3b1bb1fca1b918684d1d91129929724d1813d379b48fc01f0eea293. 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/QM84B2367002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29795285c41594c90b0aedb2e488e80b8875e1038586e5bc13df86ff35099bc2. 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/QM84B2367012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe651cd1eb2c482617eecf366bf2d052f755e8b5c18f8bf80b4ec69e427563495. 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/QM84B2367016.
Wild Birds in an Imagined Canoga Park with Lakes and Trees in Place of Streets and Buildings
For the Birds: The Birdsong Project, Vol. IV
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e026748d58805afbfeceb0cbd3174c4ec05e3ad34a2b0a5821f3ac8252041ca. 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/QM6N22287285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70d4995df19fe06c8ae501b0e8b1b722bb1f318b3ce0c4b9c9dd400dfb1ab08. 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/QM84B2040005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f028b7ac99a337471700c8f5800b628c726b7fa4f209a400906d475ad4e2e7f. 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/QM84B2380001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bcb42129d8bab9ca3233bbe8655a8fb7f9d382ce61e5df98d5c67bcae75875. 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/QM84B2380004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6eca9a9bc620947b9b2d71dbfa03fe2c49fa71078547139c0b27671fa64041. 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/QM84B2380010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7885d3246f3f5221e2fad8adf9078d1ce6ba6b59127600fffbdfe1dfe4849112. 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/ZZOPM2239402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4addc4ab2258bf7cdac459f9440fae80d1dbbf893665788354d3194c4adc5afc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:27:51Z), 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/QM84B2040006.
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 0x98b83b70f7a9fea55795fccb34258acc730e02d0130518eba95d5fe7fcff85f4. 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/QM84B2367015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652165d9c700f2afe59abe801e2dd931977c047b0d2077146677414dc7a36cc3. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QM84B2367007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc827ea86182a6827a985fddcbef96ea992d2b023ffe1c9f9b1c0689a7fb8ac. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM84B2367006.
In Appreciation of Chico Hamilton’s Vast Influence on the West Coast Sound
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e8114e6b55579bf094e9b2a1139805bb0e1f75367a2b59a5fd7dc89b740de1. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QM84B2380005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ba9afb4c5430f907a09a5a24796b43d062aa0488b9fd7e555043f18a3252f. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QM84B2380011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f2395330971c66ace6ec5bee120ea2e4b1c391cbe19e132087bd7c74fb3adb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM84B2380012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e0559c9470030b2aadb133915fa1533a8e5c8d16cd64c97d3ea4b8d971c0a7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM84B2380013.