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 0x525cbeea07d90edb6625cf25445f22638bb63f0a56a7fd43054d56b2192b3764. 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/8f6ed1cd-a5b2-4d8d-889e-9fc15cd4e9cc.json and https://artists.proofprofile.net/proofs/artist/8f6ed1cd-a5b2-4d8d-889e-9fc15cd4e9cc.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 0xe781ab3ed38c6632bd1fdc4630c2e26ec0b5c23be22b86d4d20480c98ec9142e. 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/QZTAU2367254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21be191d879c86fa84cf9fc206e718962b3dac74770008b523001724d81c76b5. 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/QZNJV2444403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1ff100e8390cb369d8c71498e6ada4fd7bb07c235162753ea983f054752f64. 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/QZFZ22471289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367cfa596d5cd3c6af1d9e2f35070529939259581c8abe73a322f1a20ac9a6f5. 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/QZGLM2569557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe643fff3c2885383e2de7d782158fc2f946db67cebef461e1b7a801c0bb9b5c3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2569561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fc2708847cb704a4b954933e2d57be6036ca0164d61b6df56be3a8f34c0855. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2569562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a5c597d77febe66a9d386fe259849812b3e0a7ac2d40eae8fa2a9a48d75c9f. 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/QZGLM2569566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa46b16a2470c8722c8aa8eb36288adb4999a9de0bff45a4393259aa3a4fa9. 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/QZGLM2569567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebfc2c418755de3ea5eaff80e2395f05b8eeb2202d71d5e4f227d0a801a2c36. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZGLM2569558.
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 0x44ad0a55f4607e45fcb802ccb1e54e6f048e943ad3689cf10543e1955a28a76e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZGLM2569559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859374a015d8f725ab8b7a70ed650b422f91fa67cf85a0dd8217ed8451f7065d. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZGLM2569560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdb04bb01a4283e1028d6e3ca441e02a659e275a3fc6bd181fb55f33e0c413b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZGLM2569563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0588f2194154b4fe330fc32895dc0d831f6526b6c1cd82eebb1f45a9df000b25. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZGLM2569564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3389ac42e0a6d3310a205f408048cbec35d93aa6dba340b350afd2d1736e6135. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZGLM2569565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fac996347d1784d56ab0102a43180be06c76efe1882edb0baa9a9d35aea610e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZGLM2569568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a0a2d987fb133bb7ef89d1416443d96e8d56fb19af3f73894ce1ca0f289b49. 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/US7VG2570851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4c5b47af20b181026f488dbe17cf98bb51314c54928d0af07c1c0108402647. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2590737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb19ee55e9df9bdc5cd50746e05d553383e166a627da032ec323e5216cf10a34. 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/QZZ7T2444327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26eeb261443ede4c5b4a9a33ec14cfd7f268c2bec9b0aee251d1b3c9f57f548. 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/QZW9M2408477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3f4f26adff6c8476395b007a6017c52ffa5c0fcd94f5bf74de7a3c5f02d1c7. 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/QZW9L2407780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eb4a8d315cdc1fb274d4f5954faeee1bf565d165cc076db08f3c0fd4859f42. 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/QZW9L2407783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8eabc617ea6a6fceb3cb30acef0b03fc02fe99f00b7488faa2495a934e4aaf. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZW9L2407781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832374735e0d258c8646ed2d209165360bcb040f0edfde508c26c27f7cb0dfc1. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZW9L2407782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3188f02c198cd6e3d6715ed58dce360dcec8dd746b14ffd47fdcaa1223da1da. 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/QZWFU2405813.
Rapariga Eu Sou Vs Porradeiro Forte (Mtg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f061ab8397ecd7bcb8cf3f07d6b53eaac9befb08b422d288d7687658366ba14. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB82485016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa05209b9a491e8e5f15581c212365c16ea375f838074a3fff63200a70555405. 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/QZTAX2496739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c64c89531d15e804987d6976297fcf648285b8aac1a09e71ffe1cfe566e94b1. 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/BCL2K2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25e784a31d30d8c68666a0e811fecba71421b3f16f075b97ef4595689eca043. 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/QZK6F2412924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38a22db1a244253e0b63f6492e0cd082171a33b48c6917cb8ed3c7ed8242946. 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/QZYFZ2407560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdfa377d05f371a1baa430ff63e2e607af0ddaae0fc343ab8e3379a6a080e64. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWV32500734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e28dcf31246f6252755ee0a34adc00df3fa702a67314d718f36fba64d9284f. 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/QZNJW2435109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016bb426c809d2620ea6f7c6b31426a005a0a889126dd5787dc4e10cac0765a1. 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/QZGLM2424525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146432bf1cf409212d76e25f76068548b974fa9a40892146ef3580f6f00c60c9. 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/BKCMX2400226.