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 0x742ecd48b25c9258b15ec0e5885e316fea1f727c31484252253fc92fc8545333. 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/8acd4b23-6d29-4969-b222-31344ba4d1e5.json and https://artists.proofprofile.net/proofs/artist/8acd4b23-6d29-4969-b222-31344ba4d1e5.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 0xf1dd6cf600b1308849d7eb689260b49b650a6b8257d194a17108ee6c0962b539. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BXLAQ1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e6a30a7fc9368410a7ca1cc6d4b21ce78a8e9abc3e80c4fec7bacfe5bf6312. 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/BRTRB1600369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3af305bb9c366c1d1fdc3caac1f7719df66aa01883a65013ae15f7d3554be9. 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/BRTRB1600371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c4b29f76e56e68218053599a493644d1244f78db4a08d31496ea72108fa136. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BRTRB1600370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59be2e1a700c9a6d375782aa2e36a133c076e5708130ad2d2b2ae1b2838f526. 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/BRTRB1600374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3301aeb27d5b8a85da1bf29bdaaa73829e850e46bf1bf9a7360ca0dbcf4aa977. 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/BRTRB1600375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70718de3b03457a00d9268521ce83d744445d740a5c3408ef336533903b67e76. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/BXLAQ1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37757ae3adb30633ea6dfa7beb2128bba82f6bbb960dba083c6eb4f31cbc8b7. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BXLAQ1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c86b87a2891f008d935726177f31bf5f9576ea37eb8d86ea4eb4d1e517e8cd. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BXLAQ1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a126e2929f44a0da42416084d1c5bb6529b65c28a658e761834bd4d9ce20d1. 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/BXLAQ1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6512d381c3585e45cb7b5e8b5bc27c5900b104f300d5a963db9b539523c53de. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BXLAQ1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7590ec216d7d0d74c90f73c6efc00790c645d4bdc971a33949e0dcb306dc93c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BXLAQ1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb1e1d9dfb260f6351acff722627433e079143b336c8ee72bba2842e7348e1c. 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/BXLAQ1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d07d39d9f40978edc4ac2afae5cfaadde0abef8090f718f0f39539045fd8d5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BXLAQ1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9bebc409883723bd868235db35b2af8e667fc7c941cf5c24a9ca72fc91b55f. 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/BXLAQ2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52495e748d12ed4fe8511ab013135b4bf69348b72c7374433091d26b05070004. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/BXLAQ2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821922db48787302bdbb678a909e67f3d3e19a7f5f8ed2e741080b0c4ef8cc8f. 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/BXLAQ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcbd0bbf4cefdc1740862365d78dfe2ad6a5d6695f4f4a055071639824c0570. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BXLAQ2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399b5520486b7b9bfe42ad90f9635e77b1cbb2bc63c40194a841ee24a6ace15e. 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/BXLAQ2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d7a605b756bb52a567806ba6a1e52232e239823181dde306ed8aa6d92a046c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BXLAQ2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5da313def7eeb42148eb36f74d9288f72b52912ef23f6cdc79c6d6afd23beb0. 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/BXLAQ2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25db1d60eeedf731b0d2918a68e3916a40cdb2175a2d29924dc4bd0560c5409a. 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/BXLAQ2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9bebc409883723bd868235db35b2af8e667fc7c941cf5c24a9ca72fc91b55f. 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/BXLAQ2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533b2d28d8a1c0d26b26ba73ded9c450e0cc16e192866b7ad1ad706d08113555. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BXLAQ2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a912a1bbdf5afb7e95a54c335fa4f98487d66e7430555b5760ea43285db3c33. 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/BXGOA2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba0c586fb75de9d253e0f2316693b2af28b47e539a15400090e7d42467bf52e. 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/BXRTV2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90357250098592a7d2d2a95ada2feedbe113af8762f55a985c48d9dcc9ec8b7a. 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/BRTRB1632601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a05d323423bcbb42e5dd9ab741111805f88024737bd10933ad38ab69fd686. 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/BX15S2000004.
O Coração Batendo no Corpo Todo (Esperar o Sol)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99699da22fe3e5d0f8ccd221af9dabbcda3cbadc984e7959ffc16b7cd6895dfa. 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/BXBE92300001.