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 0x918e5530cc0450caedc0604798beff4f0451515eff765fc18c561e604dabb061. 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/47ca2abb-33f7-48c5-9067-8d26ed6d9471.json and https://artists.proofprofile.net/proofs/artist/47ca2abb-33f7-48c5-9067-8d26ed6d9471.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 0x6e1b1be45a35b091dd939fc8a89b83cd05681cb63629fcdf294c62b687baa72f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/US7VG2080651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0ae15981fa632adffd11b2c2827818a543660582df7f63ee51f9b17cd9b618. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US7VG2080706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe215138ca2192fe4563b3d43619c214ea77ce745339105ab5c7eea63633ee0a0. 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/QZNJW2091231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe652a1d8edf68dcb3520002c1d5d65bc1b232fdcbda3a4ac57de36455020850f. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QZHZ32186645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1037005e4740859ec7217245a007b8bb953bc7c15f121c5e17f097b7f1e654b0. 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/QZMZ92185706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38767f3105c3a9dec1633b3a371e3384553b52728ef1f9e0e1a351b0c7d6465. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US7VG2293912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0591808f9b32863b82dae85d99e451459b2603baf7d60f4c939216ba326ba454. 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/BXSMM2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e796ade2d7825a8880b4efa1a82eb6c0cbbc2977fe2f4846ce8e2877a7c03a8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/BC8XV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c6d5851c5a3891a493e665497cfd31aadb13b56ddb8f5832ee03fd1d6533b8. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/US7VG2458568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a51cb1844b46baec7c1843d10d2fd5a821cf10cd3a4c690b8a37a6c83336183. 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/BC8XV2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a429a6ac7110cacfa80c41b7c6232bc2320677c1f9045c565f6147785e4786. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZNJZ2436504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cf46b1975c337403660328523dbd66376e7ba49b106310838f147b62b2f5a2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNJX2567227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a03a009b0e3688af37928bfce48ced10e2d39682a564d01dd6089be3de19513. 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/BXSMM2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0ddc45992766bedd9144c5750b34bc3adf5430374821f8dcf6511d2781c5db. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZW9K2367011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf137172a2f598a73f39263e8f07b9cb2dd68b5ac096bc2ac55bad380ba7bfd45. 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/US7VG2238443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02349f57e32cfc93f101ab9433bc93a3b5449ef9fcad51be838fbbf29ba67e92. 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/BXSMM2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d4dce5f08acea09d244f68c178289ada8265b3bea4c74ba0ac494391cf37c4. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BXWGC2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daf12fd2673d6e35da16ba1cdab439f31279b319b461d9f4cbb7eae15db398d. 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/QM3DF2198745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2c4f7df5153e91ccf062929a2e3468beb490d1581d07981f053770e835a04f. 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/BR7552100082.
Ide e Pregai o Evangelho 7 (Edição Especial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c70634b842115015091edbf0874097f7918a07e7c23cda829d3265cb0680ed. 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/BR7552400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd3485cd1966026db541fe693bfc55ccd48efb715f9df925c6eb2274b2fe309. 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/BXNT62209102.