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 0x0dfeea9a70c8c38386b7438019d27d8d248d14cfedb78656d5173840ff70c471. 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/1352ad86-ff6b-4f2e-9012-6338eca560a7.json and https://artists.proofprofile.net/proofs/artist/1352ad86-ff6b-4f2e-9012-6338eca560a7.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 0x4c22aaaff5bfdf94b304a796c37d423211521cca421a8c24df91885ca6d3d584. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM24S1806636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0eb465fdc08d06b16e26435e2826ef00fd69998cb2f0fc270e2f1611a4ef6e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:18:43Z), 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/USUM71809118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a22d95e24ff0d187677ef1e584f666b4244e453ff2054cc868153fb30e55147. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USUM72005195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376bd85915705a840260990da6b166adfe7717bc3172c8a89d7ee85f44bd37de. 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/USUM72014837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376bd85915705a840260990da6b166adfe7717bc3172c8a89d7ee85f44bd37de. 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/USUM72014837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b82439f585ad92345e7f15261a468fa09f4560893c85c907559d813fd6e5db. 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/USUM72017463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33830315bb838132a564216cfbaeb8a4bcbdd2441188e75f6165c9de04eaeea. 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/USUM72017300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6365c0f3a7db5a2b27de3a03601f818f6e740603130bbdf240cbdbb14deae836. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:45Z), 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/USUM72017307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93332aaa570bf90c11433b3df91ec269fd53db4743103414fb64c637f4df972. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USUM72017309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08a4677d717812029095b3a00fa6a2eeba79c488395950966c79efc379bc8ac. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZVEM2569239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08a4677d717812029095b3a00fa6a2eeba79c488395950966c79efc379bc8ac. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZVEM2569239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4916a59c824dcb44ae01587e0e9c6eafefc3b750af64172c40b8be5d2e77906e. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZVEM2569240.
I’d Rather Live Just A Day With You Than A Life Without You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08a4677d717812029095b3a00fa6a2eeba79c488395950966c79efc379bc8ac. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:16Z), 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/QZVEM2569239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7aadfbc0f5de7fe9e63b8339b79d22fae9f775b41aa471e6a373137a94598b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZVEM2569241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d396095db6448a955279a044275320853b2df63e654ba23a2f30e4b41685dcb. 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/QT2VB2469919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9356ccfe9ba73c659f6e9d6e1f317e75ebb46ae1bf5c33c687480585becf0f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:31Z), 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/USA2B1804114.
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 0x8746317b1b81d9e688b2c7fb4934e9775b6a04b05bfdb59b5345f43dff6d558c. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZS672178492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8937578c40c5dd1fb5bcf86722303623901cfc6f9b6e11ce1d9ec0df8faa1343. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QM42K1954719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c92b785ea835a360112675439c1b76b57efc3a97efc2a7f78c6a0f4372a3afd. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMKSC1901412.