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 0xfc36b0d01f3ac81b2dcd6b457b676055d102f4e6c68ee55b9b5d297ddfd97f34. 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/6e3f7ea8-b583-4f8d-b512-8a4c4f7e8e0b.json and https://artists.proofprofile.net/proofs/artist/6e3f7ea8-b583-4f8d-b512-8a4c4f7e8e0b.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 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 0xbdf027eeecfa5f2e62b0031fb1a795fd45f68550ee36f87e8a864021fa1f99f5. 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/ITS781900251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c90dbbf640943c81115dc4a10158019c3dc81c4691d45edc9b5db3540fca6d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ITS781900252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894dce4c514fee20e4d14c56b04c69166d76b2ce3caaedbe1fa7c904ee1efade. 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/ITS781900253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242e3f714e350dac724cb24ecf27ad942bf98d5ea15ccf3b0d17f3069505fec8. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ITS781900254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f1490c66ffbc779ff074f53146973bee32da6d234917e22f1627add8ec4f04. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ITS781900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4eeddf02967f406a42014ffbeb2a4f6708397b4f4d184cd96afc1477cc213d8. 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/ITS781900256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdb6999a6ae8049c1087712d0658b3783356d63529ce0bf4f21d4dde512c8e6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITS781900257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9daf1a0c702cfe52cccdfbe6240e9efa2ba2f8f6c12ed87db7ed98883bcc2b0. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/ITS781900258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b88fe4500af598793f7ed1d3841155aa799aae0556dac482721c7023e34123. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ITS782400443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f6a8b5a286f647659ce65dc1606e5058ef371a9f0e4a145cc1d695166a6517. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ITS782400779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6420f01afdb03793430537341dc500afba96c94c7e8c3b17013cafcbd3903c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ITS782400780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8748e12c3fb187588553b4cd7190711737efcea7e97a6594c42bb5042ebf5a92. 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/ITS782400971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186b66280d49fddb7791950917dc3fb87aa6729889e39bca8700d7f8d23e994a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ITS782401334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc539aa54d910b661b49fa881da7f1ec89a92709b39c72cc1d1437c2efd85476b. 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/ITS782401353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9364afe40b19763d65cf4f656fb0989bcfd91608f3751e1f463f7cb0f3cb5fb5. 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/ITS782401453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728ba8c9b57c915c72a46e5e30679b772e616b3fa4f753bfe88161dc76cf0013. 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/ITS782401486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2950a473bdfc84a40f82e97692b8afb2555c3fd81b884548e798feb4d92457c3. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/ITS782401868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda00ced237d50853288a27eee51a066b7d0115c1e00b3a212f0af785e05fbbf2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ITS782500689.
Love Story Written in the Stars - Subtle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33accd51c7ace20154a5993a6676fef5e42b173af2e73fc3691efe16a03f9ebe. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ITS782501000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8542797bcc76f191f2a8143296dc0503f716d6bab51fd3ac3e7313019d07ca9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITS782501001.
Love Story Written in the Stars (Shadows)
Love Story Written in the Stars - Shadows
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20324024c4a1d4734702cbf9cb90ac492345900341ebd62aefdb804051d7b04f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ITS782501214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec010dc6efc3f3df8c20d12e1981b9e67955ccefb606ede56911eb3bc524a59. 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/ITS782501215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee10e97a06b609a97439aca21b8172519017830b524ebcaecafbe22677a6cea7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ITS782501386.
Doggy Vol.1 : Deep Separation Anxiety Music for Dogs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5855e08af8f840e199e9fde859b6b20c9f0ab9b77a6d32df97ca47c7f4fb5715. 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/ITS782200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcba46e4fbd714cf882f1bbb2669fc1bd6a819f0c42a7990e7271bc5c791dc4. 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/ITS782401339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186b66280d49fddb7791950917dc3fb87aa6729889e39bca8700d7f8d23e994a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ITS782401334.