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 0xc67b3c04b7df580b5f4a71cc5081224d96f3fa5c20268bdf589d007a4c5bdefa. 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/7d696900-f569-45bb-94df-00460e95c4b5.json and https://artists.proofprofile.net/proofs/artist/7d696900-f569-45bb-94df-00460e95c4b5.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 0xe2048e76dd37143a1f073a7671787ccc2f18b86a4a28ebb94e296aa2d854b20a. 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/ES47E2008944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd654d924c49189cda8285a210465ff91cfcdbf0d04a9c9f86f9751f292a304b9. 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/ARIXB2206174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b30efa9cfacb9700a0a1f8c12b0079058451e22edb76f61a482b82bed43877f. 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/USDXS2013526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1598f879edd64f08350785999c9f5a15b02c3b724e0ca5eff10980f5a8b41e2f. 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/TCAEI1924795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00efaf681c6c643bc5835d63d06288b995a4098ad26cdb63c8e341e4cd46ccbd. 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/USDHM1907634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fb346682527e77b71eb3084e6477beac433db0eb7eea34c04d1134fa0f2b17. 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/QM7282401350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0551f8f4d24d46b929e988430fc7de5b1767542030c3d9bbcfff879879ddae89. 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/FR0Z50067374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307e9c6dcf260e0c196002ff51c79052e4dd819a9eee55b6000899ee97490655. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES47E2008943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad20c4e494a2f24c6cc7d800436c8ed7e1ca226eeea291d8a41a440197d8ccd. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QMBZ92423699.
CCPM: Centro de Comando de Perreo Mundial
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da0d185f06176fe0c98c0ea417701bee41edbdcad8ac54fbdd7a3988320a2cb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA72409810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa881d8c19a16bc5dc9ae36fce302504ea6f878adc6e0e037fb9f5cffd66dfe4a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QM7282401428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad20c4e494a2f24c6cc7d800436c8ed7e1ca226eeea291d8a41a440197d8ccd. 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/QMBZ92423699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525813a76f7f4ee3bd5a29012b168dd46488a23eecf9c8167177b16a574e1fc4. 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/QMBZ92463118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9946d0193afb5f07f80e11af5e8de450b8075825a1221a8ee3ef64ee849bd0b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMDA72410040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22609a28921173fb94a25c709e87bd2b5abc31d4353ca83d25a276dfcf7ffbe1. 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/QMDA72410054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9dbace97acfd64f639b239c8e99ac9ca77f0ebc46a6f8bb214615c946d6dee. 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/QMDA62444329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ed80e6753b5cfd1db07ef8a88b334863c7f8d2c92fd6813dc74bbb48b08232. 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/QMDA62461477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c05d35e15df132ca39321862b213ec14da92bf586b38587de421a86ebf123d6. 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/QMDA72410052.