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 0x57f3c5c8e7f9a78ad4a925e75421167f3ba8ab80343576e434ecf866ce636075. 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/17d7866b-c315-4cad-ad13-a8a6b452aefc.json and https://artists.proofprofile.net/proofs/artist/17d7866b-c315-4cad-ad13-a8a6b452aefc.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 0x375a01a2c025ba03a4ae677e3cda873e3bd11b77f909f3878d9dce5f6c929823. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZ5AB2414313.
037 - Se a Nossa Vida Entregarmos a Jesus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14494d3cd24d6e3c3e6578b24de069241e0d4c4ae6cfefbc99eb9c572d38f983. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/QZGLM2467148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396f72dfebc510679054c21fd81048d404bba6219e8967355d194ff040acd3cf. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZGLM2467151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94743930d8dc8ea2e185ffd24ffa9919cf35cb3b2136b22ed022e42a2bf711c4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMZ92475749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb782ed9f0cb2193c04816085ceee1d329bf335316c9e4ea19f2a25caa95fb57e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZMZ92475750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251778e02fd3bc38cf8b08eb0bc0fff619ff8d6f827c044e6737d20e482f5d80. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZMZ92475755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc62e3bc4b9c04de6d2f6f5b588456c4b304278a3bc1bcf560718c8a8f558c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJX2452893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eaf6a2a1c14a5c24f940dccc73129a53a09d6ed4b12ebcf2a295e4565eb937. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZNJX2452894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c9f68de41a6888da6c77668dc305247afa069dd5b782187096675f8317af9c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNJX2452895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b99b2616966779d9c55b061fa47aa42853faaacb300787635105f0b18013de. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZNJX2452896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3388376de0881bd24316af3cd1cf26fe05ad9f41a8d59cf4d61cefdabcf9e87a. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZNJX2452897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e9203c8325273ad57bf9e7e6f6b56779df66bfbb9b0e98f96f338b377f95c. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNJX2452898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42d0e77cd7e92230cc4bc43b21efd5911c7298a4a6a8bbd5ffad39798f98ef9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJX2483606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed393c298dbb1c63d74e79bc134d9dd816fba0a2cc8965169aba59a07a304dc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZW9L2416349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265ec3e3fa5da27cbf7f18f04373db3cdabfe013057aee09757b17ae5ec02cf9. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZW9L2416350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bc331f1f96d46344f01cdfbf12326d4f5b439db5ce64559b0f3d14d714c5e9. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZW9L2416351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb3034c5c198495c95243fd790c3d61f8867855e65727176afd31af46d1066. 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/QZW9L2416352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d319632dbd3665de9617a2475b1b732efe5a26cf6cdee56fc816ed078869911. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZW9L2416353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccedbb54abbbf7dfbb165606bc293423277b9c50210d2321746f5180147ae4a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/US7VG2595403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf847c3dcbda469bf20ce1735e769069fb1e8701ef1387ebc68408a585ef8514c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US7VG2595406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d71e3d5eb1f2cbc960bc49f785f65a026cb8d6f05e14b3c7ad829c898d243d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJV2583255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8872c7fffb4c05cf977be3d0edb9bc726c537bb3af6f586e3469b2e88b2d2af3. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZNJV2583257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5815991cd0cdfa553ee40b8faab53f728efd6174b81a1bcef3e69a5eb59c46. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZNJV2583260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb54fa3d229b036f7cb5c7f815c9d5d32155ce2d6079c337991675577e760d3f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTPX2530342.