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 0xe0c38e4daff6705db1c1af1d2474980d51b52e7cc7c525c3cd0becb9b349411a. 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/d164b340-3aa2-4e5a-96fe-6690afcd3b82.json and https://artists.proofprofile.net/proofs/artist/d164b340-3aa2-4e5a-96fe-6690afcd3b82.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 0x75ff175eb4abcc538b0fe39801c56c23f1723748d259a944a7b1957bf4b70648. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USSM19303925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf162f4bc1209f6e3ba36a8953311637ea39d89b736b84b48d683a79ef21ab6ed. 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/USSM19303924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4417c3fe8201a04d247d502f131544d5a68a1584afefe6493fa880e77b7dcf. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USSM10027380.
Sexual Feeling (Featuring Christopher Williams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e3e155c30e13ac1fc460afe4b7427cd50b6a4abeb697a2d1af6e3217f08255. 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/USSM10027377.
Romantic Call (The Remixes) (feat. Yo-Yo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20aa0d057321463abcf62b8ea7bcfe591c5f70427cf76466f67777e6fbabc38. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/USSM19500498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9149ec9eda65d866da0e193e8cb641a9a9729bec76e2119adf23978c3a45a4ab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USSM19500499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157913c04b030f88f24937b1fd1568fb1ccf0e2f92eaf64a65a53c669fb8668f. 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/USSM19500505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0443370e69d1668ba0a802dd768d10a4debabe310a38bf74e34c253959007df9. 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/USVI29501063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf4375dda06984ad7f581dc641615805fb7aa1d061b118e993d3f4a0d2fa8d7. 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/USA2P2229860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f02292fc7a51cfc047beca21f441c3139d270d261ddd96b8413c22f49e66ea3. 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/FR8GV1904800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ae6ecee2ff04c4a5d95c27b19e86bb7c32f07e4be14ef1d9740a9ee3a77c9b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR8GV1904810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1112242860a4d3aa2929b8581448119e933e5d263db973271aaece93fe1ee84. 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/FR8GV1904990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966eed6f409555bbcdde503ad0a6c7f2c0cae61adcf12bde6ea65169b6a7db45. 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/BRSME9600398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966eed6f409555bbcdde503ad0a6c7f2c0cae61adcf12bde6ea65169b6a7db45. 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/BRSME9600398.
Seleção Essencial - Grandes Sucessos - Cidade Negra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966eed6f409555bbcdde503ad0a6c7f2c0cae61adcf12bde6ea65169b6a7db45. 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/BRSME9600398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bba4b15062760bdd1d13af10c9b45eab451849c5c291b66d428adb6f40dd38. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USA2P2230554.
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