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 0x124e4ae0342c366bb07e27640d52dfe5045386b9010c0f67d1178c4ce2619307. 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/19f65295-0dc4-4de0-b645-ad4ed1770b8d.json and https://artists.proofprofile.net/proofs/artist/19f65295-0dc4-4de0-b645-ad4ed1770b8d.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 0xdb7e1461cada8e1a4e2434d46f145a69369a5db69502280ce9fc244400aabdca. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:19Z), 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/SE6HN2479070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e616c2dcf4d582aafd560b6c24be2938696a97b6c7cff3869401d65d687bd04. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SE6HN2479071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc466590ed8eafcfe94b5a7e00980cb001a74abf6f689ee8c121d243836b67607. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE6HN2479072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a994f033c5ba5a08a9be8617d48df4c6ce03c4e0ac637ca40fd1982bf2f54b. 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/SE6HN2479073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b586162a0ca6f59c21820acb9b6e0a2c1cf82e1ea857d025de95b7466b5352f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE6HN2479074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e57a555fcdcb647c11e6819e327a3628fc991bc75abb7b1fb9688ab47d3dd52. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/SE6QE2441542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8295ac5e88962dc18becd6258d21912efdd87d1fc73ba71ebcb2251105a6a61b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SE6QE2441543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059751b835c6ca3f09bd4bfa49423f587854944968aae04fc1423f4ac4d51965. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6QE2489288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f0b75caab2752e83b88cd8c17e2d610ae8cf3c5417ba8e21cfb9d92a65d2a8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:42:09Z), 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/SE6I32502545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db71054b9eeacefab3b4d925371d204d9846f994ddd463f4f620d77413f6919. 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/SE6I32502546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18570e7d6a786f9b3821faec8b87b8fb08f36cfd4393afc177939b86409289bb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6I32567787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8612f02c44aff00f8e2703aa7cf62a677d9c6c988f877a54f4d7025975e52680. 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/SE6I32567788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bccb0a7b70a51a23d800d5f2b8fa8848e87e20eb6456a4f2b40f4f1c3f21bbc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/SE6I32567789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0024cd2b37bf4db457ec2fc85118702328975044b574266ff3c38d3e4ca809c5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6I32567791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c282a3e5e4cb899330572f947d006ff336c6e7889aadd2cb7412b0b1a2776a7. 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/SE6I32567792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4264c7bc3b751ad6cbc91c020df56dba9552756bb403621da74b9dd8fcebb8. 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/SE6I32567793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1753d379a93e528d12eb8b502b51f66b24c852070339294da5516fef5360c1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6I32567794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdda37a7ebd043cc3c23ff3d0887e5a723a39c2ed9b53b33ae1dafa6cde0cf0e. 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/SE6I32567796.