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 0xb064db5ab205e72c1ad463e318160a7ae8fc2943ebc720d74e4755b3a8d3b93b. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e72f7e1-4164-4ee3-acdb-ed7e83c28b6d.json and https://artists.proofprofile.net/proofs/artist/4e72f7e1-4164-4ee3-acdb-ed7e83c28b6d.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 0xba6a049799c5f84e6d6b116af9f363247f93ebd44bd1eb344b0f3be19c577cb5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:29:27Z), 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/QZZ7Q2511602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58000f857eeb63582b505d2eafe3027dcfef205f7c3978b2cc43d04dfd4451a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT3F72594667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b56df1e3cf08941600cac8db0ed6e0f0557645534adc1b7016c9f0431a76712. 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/QT3F72594668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b5a18c98cd47c0d3aee6fc7bd3b3515ef2f3bd76bc9f8e585e7610b75386ff. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT3F72594669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011973ab5eaa2b502caa5feb7cbf8c2f63a37a9c5971c5cde180005830db0d2e. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:02Z), 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/QT3F72594670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c12f7747501217ed3d9b1d9a070067af364a2e3a91007fb41bd1c9559fe2a1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QT3F72594671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb84d8bf0e2748a72743fb4794e713f5bf2edf17896e001ddc4b0739f50883d. 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/QT3F72594672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f873c5361f532c36a5d479848aa2f2f28517dd973ee1bbef5458b1b3bd374d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:23:43Z), 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/QT3F72594673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1d4893496d3d1fff9bbd190defe11b0b992689b6d97e4b9e99d4017ecbe222. 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/QT3F72594674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64786d8be9203bdd82736e86a46586f7e7cb36ef625f644049ff3ca5f6ce34d. 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/QT3F72594675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43f63094c71f2a273f696c62b5d1edbce84e32c9a6cfbe116db337ee8389c0f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QT3F72594676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a46a6fa6bddbfa85bc80fec08500e7c1d84cef8c4305d28566c8ecdf38b872d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT6E62572690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761ef7f23acb7ed16716e036723e9e4ef8c5e25f15c66be03d739c74598dc77e. 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/QT6E62572691.
Santidade em Cada Linha (Livro de Levítico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e242e952ca3152d0d6894a204ede9d4bc1e3856c771af9da41e0ccb8ebc01d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:57:06Z), 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/QT6E62572692.
O Deserto e a Promessa (Livro de Números)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dd236fe9408b38a812322c4b08a2c019b530349cc2c99bad17c3e7f0b25036. 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/QT6E62572693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68d77b724e5b516c0873b2b606a9b5d611531a3f8e52b684de0aff4ef0b0480. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:34Z), 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/QT6E62572694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687a8b44367419f232ca75e54e7ea7b39643c29d4dc214208df1d90f0a2bf552. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT6E62572695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252c450467141149c3cd29349510f0d5fd4ef5d88c5b218929fc5fa9fc465595. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QT6E62572696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6269cfe7622934a0138af8b3b148d8c9e40eb79b3935817ee408cfeb1e2a60c5. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:17Z), 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/QT6E62572697.
Do silêncio à voz de Deus (Livro de 1 Samuel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1c75e9ebe318429d990870070e00bd65af1839afa1e2d4a0058dc1880aec5e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QT6E62572698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea4130a3ca437294f7838cf57e8e4939fe8986c7bf6beca888227de7fd87665. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT6E62572700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc73856c96221a74ce3d45a1f5ff4d1c89d0d45ccf5ab2610373a7c6e8b1a652. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT6E62572701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba784d42f10b4f7364c0fb83a5089dc55f04bad27296fec0d3567b7cd7e332c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QT6E62572702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb02b7d67a8846e539095f9f92e67a32221f8de7483d3e6a148f9a70193a904. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT6EE2578116.