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 0x9a0e187ed4921916d3a5ac40746908c856ee9e5ade30b727db97363ac75f297c. 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/463ce8c8-15bf-4aba-8cfe-3ed32414d082.json and https://artists.proofprofile.net/proofs/artist/463ce8c8-15bf-4aba-8cfe-3ed32414d082.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 0x49876810409d40b79ce90a4c40cb922c950a96adcae7a5d93e79025a4807f234. 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/USLD90802631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75be340a044e5f465d6494bfed152877d107a0d73c9a306c406e2c6eb101d703. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZK6J2543712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223b4dbc42210fcea41a8dbc8272e1f80cfa8c9c5d8ad5b0cef5cc8ba2fdcf7b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:14Z), 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/QZNWW2577965.
Carlyle (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5b864d7a7f42f1ca4b69817bb5dc71c6c848543ff0ab49259aec2253021f03. 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/TCABN1341907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d1e99e7a18ca6eaa8182520680af5e4fab3e550628bc7058169cad2243a643. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/TCABN1341916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839a3bd20c976237d766d665c023d6c014fb852092c7fec62463a8fe005c8e69. 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/QMFME1922918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b9d5335e7239c02ef7f6976c513d3e44a1c427c896d04ae626def2c0783593. 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/QM6P41443736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dad882956bb49b4967e31f824e100a1c62ed96500970501e2915430ccb34af0. 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/QM6P41443737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c61d5fdb8631976feefef7e16322d32974665069e3d8161d3f1209a1b6df60. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6P41443738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc712d219c835eb9b58739366bf6624a022976cd0875ae2097ce639fdf5672483. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6P41443739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e263be6b7d1217597d44c80c41386edb95d6adf65beb11fa936319709f41a10. 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/QM6P41443740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06116dc023fea78af5060ac0b0f1cf4ef5dfbc00f2547e2f1b36c26405575f33. 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/QM6P41443741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1f5eadfae5d10c3c2f751a3e95483a853ae4fa89a85f0857e9d26994d234c1. 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/QM6P41443742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de95061d7e4c3c2bbeb641d6b253757d19be7ca7a51fee0566a2208de2ef88a. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QM6P41443743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa14f4076178e684585ff0c8b5b4f18b7d04621602f0c70b5a7d59d273b6e7e. 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/QM6P41443744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453e0dc31fda8744b40f921c9d9bebf944f07cafa73d589733016a2667bef10a. 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/QMFMF1394526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aab02463a654a6b2a0634d340122996274cb55eed5b0440b87fa6e71c64427. 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/QMFME2134018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9be47cfae652cb4514b1576a9dbcadab8799b31c26b0e7b6d2db089cfaba29. 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/QM4TW2023144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf59a801d40b157feaa9a1528b6f77a6a6097463f66a54c859d8795555ea3ad8. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:31Z), 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/QM6P41443747.
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 0x552b009bf71220119f35144ad1ed612d0bfd79ab857adb77a83c30b6c8f735a2. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM6P41443745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf570d4d7771b5abcc39fd2ce582b8206d2e3bfc893c80581a80b45b433bd0e6d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM6P41443746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8ea84520bcac248e78fddcdf2356570f0286fbca30ecb0799462df55ad6bd1. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QMFME2134017.