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 0xc89f8727cfe2ce564afafdd54bd6998324be6fb825ddd1900f722a6e5729a951. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30c91d67-3945-411b-854d-729febdaa3b8.json and https://artists.proofprofile.net/proofs/artist/30c91d67-3945-411b-854d-729febdaa3b8.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 0xca35d66464d3aaf59e7cf520eab6ecdbd7c2f26c2ae82def86c475d66b8df9e6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MX4971534673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce8a188a301364edd9b74482ddeb7c47c46d354ab0f746e7e6e0e7ac13877d7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/MX4971534674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc507835e81166b9e935371989b795809fa3fe0ba732678f0489f75105831f3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/MX4971534677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffa712808ef01668994181fa8c8cff57ab46a2f416f1223e6e85903f303e80d. 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/MX4971534685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55914fbee0aebcc4b8e718c9241b50cf3b7d51703452f08a574a67c594c8d61. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/MX4971534690.
La Rumba del Adiós (!Tranquilo Mijo Que Llegó Papá!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df710f598634412cac0300b85a146679aef9a3a4055aeb951027bdfdf0d9de2. 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/MX4971534704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7a9924e7ac9037f43a97c8561dad997485712436e08ecec1fc94399c077d7e. 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/MX4971534706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf78611d42be5a2eaec488ad1509fc573e017656a0c580d3114e56ff2245f9fd. 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/MX4971534707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f4fb31bd0879d7be0ef0cfbf8594d0870d30f432dedb840e2d33fcb76320ab. 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/MX4971534708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8ddbb7f3e013367034a52e6bb616554cc99be64c9a185442e8f14cefb08d70. 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/MX4971534709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7faabd1400b8658b0f2824d68bea62380a41d9b0f91f0f5fbd1d30b44afc071. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MX4971534710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d7ee1639c4b26949914e9128495eb2f2c887878e1bd4ad7b7f41b1c8b6b76e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/MX4971534711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ff301630102dd8840a9411959efaa9f541489f7c53fff900272ad9a8b9b625. 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/MX4971534717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd5f0e662c5a136dd07c23b07ffe5a2a9a7942384227bc3de891053d671cc08. 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/MX4971534718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a32c85fb9c187f15816560b65f335ae10660bf2440533708ac4b91a5fc192c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/MX4971534719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb113694efd9f7b76f75d8f713b9db65258728d786acd3b48d9fafd75d105fb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MX4971534721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2669361395c78587a4671772616ccbf5cdd26fcc04dc2857749c2d11834c3d. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/MX4971534705.
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 0x887b2ec174965b2f931e97f3100cdcdfc7ae7a9eb16cf4a271bb0171226bf58f. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/MX4971534712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76184e643f3e471dba96360d1fc1a047cf8299e2a8d2bb0fc5e528a36584d9f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/MX4971534713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4591c911435a61f68cdbd61de157d85a22ca806eba1dd700ce30621e48678756. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/MX4971534714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6fd28fdca9f93056c2f9eda55b54eb00235a6175455fa197a222993303b946. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/MX4971534715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531a341f749ccf9184ecf13ebe0d4e887c8a8f2a7b7721f762739f35a7db4596. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/MX4971534716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d91b69b71b64455bb39f42075baa55d9b49832235db2603a5c4a441b3c5ef10. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/MX4971534720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9b3b8f9751b97c4a441273fb4e008da39df7421562351ab609d2b1a2e7e127. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/MX4971534722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1788addc038a1b7b6f4e0a0baa9e53abda7ae07d25b07f231a4718fde86b8f7b. 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/MX4972400055.
Titanio y Sus Amigos Presenta a La Suerte Sonidera (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa055d6a4563f6ccdb4697e64e2eeb39ff7c7ad910151d2a4a2da25f01b55b2ca. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/MX4972400921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23808a01f2ed9773f41e68d1c0bfe25dbc975fbbf932ffa97b49d9e0e97f3439. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MX4971533099.