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 0xe6092ee7b0c5ad4ab067bb193aee5096c0fc87760ab88bce479aa73da0e90861. 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/f568ab02-c22b-41fb-8c85-cfcc6a9c0e79.json and https://artists.proofprofile.net/proofs/artist/f568ab02-c22b-41fb-8c85-cfcc6a9c0e79.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 0x72eaf45bf7fc498ef712b82f62b50a34b3ef2b88b8e89dc91ec91eb20ec63304. 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/QZHN72162826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92764bfb74f819c44b410b539ad9585831cd2bc5375aebd016a057fd54e43337. 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/QM4DW1779387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ec0d8805cc0924494a35cadaa51781566ade9b64ad2c87f2d3283d95df70da. 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/QM4DW1779397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf8d7ac3717993bb7c37aed1fd55775e6ab4ff8b82eebe1b74842d31c0a5635. 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/QM4DW1789766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9cb1d4f90f368f3bd7b15767acdecf064ea1be61c78465c1d91fb5fca536bd. 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/QMPKX1767092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3009453acb295e587eaaece5e709c84c58cb2146ec55c797aba473ed5262ac3. 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/QM2PV1713366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f292370615b7c01db3c625e7efd939e8057fb3b0ba6816f3ef634723be69252. 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/QZ9JZ1713598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11377659270c6ed73950fd9b0c8655f250e9fa2cc4b1e23bc7d0eed41987141f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZANL1750859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd647481fc18ad309f965653b65dfd00961f6999b4e42c3399dcba4b2e525f7. 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/QZWFG2421443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a455f478b5d944dc1736d388447e27b34e8f894808939e8f1f78f49f0ad249. 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/QZWFG2421445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd753ec3b6ae602b8d7bdec535aeee6e3c76995ad177ec8cdd89c1a5e82b0e4b. 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/QZHN82406663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa389265be3c1c85d8675933cb5d2a56cf0e031cc7e136567b334c98b3484f981. 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/QZHN82406664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7450d6ff22737970d498d104be9856e233aba604749448f78bfd17a3af683dc3. 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/QZHN82406665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe753592c12aad644306d7c206ae50ce0cfe7da07e72b6b01ebb6caa8b837a8a5. 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/QZTBE2352699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d09fc67daeb41940266983052e71e3481f54095ed3f61702a2b166d1c5eef50. 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/QZFZ22476932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc8dff3a7493859e1b4d3b9f2f22fc2c2632ce595950877bedb0d89311510a1. 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/GBPS85399583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492bf3d1c0e1ef072b0078ba3f0f12e12fc6e69d56a38ddde6e9ddd9baf66048. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZTAZ2269387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf410e32272e8200d4962c7c1e0d4de7fa307d7c76f363a94b59b999ec91bc902. 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/QZNWW2237005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9df9b61ffce4c30e9c5ac28d292ef3f31223184284c0b296be6291db94ec27. 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/QZNWW2237006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f57a563245d9f28c567c7b2731684e4b3be2900c4300832064005bc3033121. 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/QZNWW2237007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb3c8c865070395b85f84119d72bacf378c67b2a7f5b7f5c6df1693714faf00. 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/QZNWW2237008.
Alternate Realities (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe305cf75cf28aee70c862a69ef3c451939cbc4f1c0be06b77d4fb9b91efd1a2f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHNB2197624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a7837c328a287eaa6a7fa49b0793d51e78a7cd0160553a42bc4031c8e10996. 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/QZHNB2197625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56032d5117c56a6d231cab2cdfaec208cdb31773a69c5fe7f0fa9b7b106538b1. 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/QZDA82072819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16984a7991a5492cdcc5e8f648d324ea11afecc041108633f4ec342dc9dd4a19. 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/QZFZ62004935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98544da83ae0e535516607904e51cffc614ecbfeaaeb9bfe4e130efec128ff39. 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/QZDA71995888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3d75062527d841eab6420cf7afdec110932baaa750caf569477c4718798db. 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/QZDA71995125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a3d43bd45e766a860d6e6dd9d15dfe245e68610f82a433aa2616a4c3ba78e6. 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/QZES81856933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500e5c5c16c846e93d7e0ef8ccccc06ceb39cd52c31bdfa3a549b66810876e7a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USCGH1877733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11377659270c6ed73950fd9b0c8655f250e9fa2cc4b1e23bc7d0eed41987141f. 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/QZANL1750859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f292370615b7c01db3c625e7efd939e8057fb3b0ba6816f3ef634723be69252. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ9JZ1713598.