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 0x1558780d1a60524e7abb18a0e68d72db53e57bd0fe0990e704f73da690b2c42b. 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/6a73795b-76ae-42df-a91c-472d7b2a3f85.json and https://artists.proofprofile.net/proofs/artist/6a73795b-76ae-42df-a91c-472d7b2a3f85.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 0xbc93f48eeb27ad0b1c0cdfa767b7ddb5a685629072e9549fd216498891a27162. 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/QZ5AB1779838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a43df87da16f00c4ed9e8af865a3582e4fa655d9a8c139c16781a6a2d0ea01. 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/BRCZ81600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232384270a3653f555a733e8efbe58adc8b9db866f87f26a8ac938c97632acd6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRCZ81600002.
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 0xeef0f9b9f5c77eecc12aca93ee55dbe15d624d584ee4283454f6d4c18b0ce76d. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/BRCZ81600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2561d6dbf14f8d914150c1337d224dcdb9d185386d9383b4c5eb5fc2171908. 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/BRCZ82200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc128dd5e46a34ee14425b05ead75456e5e960b2b8a5da7cb101ab0fcd721a23c. 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/BRAPI0000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38efe769a02c58c9416554a015077343837cab4aaa0d6e2779d254b4f65a0cbd. 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/BRAPI0000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fed4780f32ace96d1dc6c5b902b5f4b2eb8d1e3e0ef44a92c154fb8f5f824c. 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/BRAPI0000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e253389aca966153f47e83eaa3da816d2d37b3867c9fdcc6dbd3481f14646e1. 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/BRAPI0000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b661f28017745b42ba9ebb02e08eb4ec79cfdf1aa7f08d9e09988e7437853aa. 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/BRAPI0000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b27a2d8d2e99a7e55c55b71c57947fe7dff3d281ac5f0315b9a25576b5c80bc. 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/BRAPI0000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979c56d97cef1f4e92de7588b8c75db0d9923d53cb97cb8eb6f91afa8cc62b9d. 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/BRAPI0000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ab544bd75dd5c35fdb89068f3ab51aa7104f5c06a3169f3debd1ebf920c14b. 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/BRAPI0000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9bd2370bb4cc8ec02de31a166b9c26e416e230c07a8e91514479fd68f284dc. 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/BRAPI0000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463dfef27c86d9e6739e63fd02e26a2f3c97fdc11823ba10568407838e943697. 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/BRAPI0000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd78c32317252570879fb3fc8c46b0338f1b1faaaedc22c81bdda2aff7296fe4. 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/BRAPI0000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3348bb9764eb3127ebd121f5d69cd2ab0dae4bf227f6e0036646fb8124a4b467. 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/BRAPI0000215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e4b9ace9bb49b59bcf59edfeeb721992b348996b188683ec32005707d14f0b. 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/BRAPI0201149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eaf8fa124b598594c96c453cb41e88b5f07251cf1db42eb62f56aea5666cc6. 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/BRAPI0201150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36b060526c23dfd23290348f5d39936a88a37edf71c28c0c7157fdfa615e0db. 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/BRAPI0201151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b0e181f994dc95ecae6a927044b45a56267fab04c28bc2d5313cb472006784. 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/BRAPI0201154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9967230f8838b66f0d55148063bee69e048684c7934306780816e9d9781f3055. 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/BRAPI0201155.
Jigaboo Apresenta O Quadrilátero (Quem Esteve Lá... Sabe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69360d84796a88bc594b6c03a59ef0e9fd5b7f62fc1886006fe1fdf636f45177. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BREMI0300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d1710cd6a627172b606772841951b01cbdab1f5971b393b338635b8205fc97. 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/BRCZ82000025.