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 0xd6274afa3633703b0c3a410922d96608f8f0896194a70f3813958867fdef0e1a. 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/d39990ba-4351-4d50-a7b0-9eac4158fc14.json and https://artists.proofprofile.net/proofs/artist/d39990ba-4351-4d50-a7b0-9eac4158fc14.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 0xd99e95b91ef027bfeac7a0fc62b3194a6c406abbf0c0a0a6a5774bf79e6fd7a2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHZ42183481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b53ab4687a3393e2b1ae43e975e9037f24c825fd4daabcb114faad564510a72. 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/QZHZ42183484.
Lavadeira - D.P. Adapt. Edigar Mão Branca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff2a58c175764820728c089b8b2ff182655a10b32742dd7d6f5c721508ea967. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:53Z), 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/QZHZ42183485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f3a8e2441bc6d101165d63bfe5264c9971971195827bc25bb6e1d0ece648dd. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZHZ42183487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd966e05606402113a14fecd604ac263e33a53aaa79e9fb1bbd2ef1c8690c5a69. 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/QZHZ42183489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ab36d1a14d437328572f5db8dda6f452e2fe40c17c64eea4b3ad73e62cf543. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZHZ42183492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848a06db89208fbed5300e6927722673d7436bbf89c8f9f264e4b00036a4d285. 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/BRDE70400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67af4feb966b3addb3de374a2155cc07c697ce46535b2332011018075b27df8. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/BRDE70400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2e8fb48920b8c4f453e5af7ab21670a376e2511c1a0f054b8c851fd01f8b9f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BRDE70400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dea52b96f0dd533b89d08d1d8cb9a54cb2eb6a73ee310f18f09b53f8919fc9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BRDEZ0400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05513b33719acaccb7ca3b43f502606c74310dfdd80b751b12e5d05954bca2af. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BRDE70400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf6cfe91975c87a483dae35ecd040a11744726f0a241f1e489036d3ee489deb. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BRDE70400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ecca1e38a72e46e23a6db09a5a79ec90096489c63cb67b4c069ee781c44dad. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRAPI0500763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfefc20d4217f06a91183d7e2421c24d4b91933812f0b28b183e55767e765df. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRAPI0500764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5b85e7f5b1ccbbdc8e63752dff15c1e397d94347593971753d04c81f8a2400. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/BRAPI0500766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167e713db69fce4e53fc9a741df58298eeb09d192828efea22674ed2080af861. 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/BRAPI0500768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b60bd8fed50d0dd763e40ce298465c4a41f70f49a422f1ca147cea5b1b15ec3. 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/BRAPI0500772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6305db58825798b3ccabe6f2544944ac4bb7c7fb5d3f25f52c914220bf29712. 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/BRAPI0500773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a74694b774f0cca492f3f4b67752e65001ea66afa3022908349a6f3994cd98a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:14Z), 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/BRNYC0800792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252845ced1a6ed7a38851a3535845e5a4434a34f9a446d6a5cac5cb35d8b52c4. 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/BRNYC0800796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd101f86cad8ac4e4d3e289052ab856897ce842c61062090bbf090636ef02c1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRNYC0800798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f61922e722199df70f55c833cdf7ffcaf69f7cddaa629ec7462e617367047f. 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/BRNYC0800799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42d364addaff3665a40f5de679656c41f3eca21b13bd2f8c56d32c20ed6130c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:39:08Z), 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/BRNYC0800803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5764b6c16fd2632320b19e1b5f35616e8e23a30fd7ae06dcab7553a43f1b0bb8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHZ42182260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4d68a50578505b1bba8cfcde810f41c7b9da72904f0c150dc3c948338f46ae. 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/QZHZ42182261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb471df9f2838fae6b0c0470b0ca0da8c1716875dcb71f133ee6f71368317d321. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZHZ42182269.
Pedido a Santo Antônio / Puro Mel / Já É Madrugada / De São João a São Pedro / Alegria de Pé de Serra / Comendo Festa / Rabo de Palha / Dançador Ruim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd858b19a90e390793626b619ca612792ce4e4340ffd3ce840cb52251eda65c26. 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/QZHZ42186970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4110cde5785f4f90e9e8a2897a766453fafcc44152e38c6d6288c38d5da43487. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZGLS2022654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d405c1a27d51e27804e80978f0ec80bb5fed7c32cfbef1a8f0d2788e1474562. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM3DF2214150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c197229674b12c4dffcde1ac9f6e197c8442ca4d950d9693957a23165662e9c. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:09:11Z), 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/QM3DF2214157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884292b38ea751c8de183a54c2cfceb84470ebb572893b456bb7b498434b7efd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM3DF2214162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cda3581f0ad70254acc8295c44b250913ca7a7c6a969805fc41ebad50c9d58. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:22:26Z), 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/QM3DF2214169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa515488b7948f6400a63d7e36de453e31bf2bf833d13eea4f3eaab8cf6acd883. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHZ42186997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5750b8e2406a098ae22d49e9b6b8f364439538ac7d3572e587d750b20c5e3a1b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZNJX2195742.