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 0x470aa8ce4b377b8fe9bed468f3f47e821b990c08ad751be596c2a8328cc7ad52. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8f0b982-d748-4180-95c7-e82b0cb61110.json and https://artists.proofprofile.net/proofs/artist/e8f0b982-d748-4180-95c7-e82b0cb61110.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 0xd17f593a8a4732151ad86aec5818a840a7337497fa845125c2f8b0f5a21a1d4a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/SKP951800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609bec7851c7e8aa3c04d9299deb82e0a775b482877d09f7cd01c3291551b809. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SKP951800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77417eed3d6f7c27f6555d8574cc3422bc04171122b839bb44ba2d0276499dd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SKP951800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3c89e8c49809c52c033aa85f249b3a3b689e8770530389cc3dd02ab4393bb4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:25:52Z), 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/SKP951800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a0d2de3b42a40e1ad9018efca77bdf2437d9fa261ef69603829f244de53f56. 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/SKP951800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b46d6c6988e02837f187de8c5f3ffdb2999e6af94fa76290d1d9be9c917ab. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:31:02Z), 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/SKP951800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05ae4c6869a85401b6be0e522d3acead544047d77d9c39d1dcdb79ca3508218. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:21Z), 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/SKP952100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516f9b688b9907fc48d1d59dd64c3c8c0f7303545cd64bae8ce689372420a1fd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SKP952100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fc677e7997c5bae1bbff49a23ca5ad08eae903f60d59da0f47a5246969e29e. 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/SKP952100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627776298a73c54cd91beb41cc059e93d13fdf420b4bcbd5219539013ac4cbef. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:31:06Z), 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/SKP952100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c230098f7d7bbacccaa6c288e036b93faf2f1e47767434b045d6ba19279785. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:44:01Z), 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/SKP952100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05afbb9ce6f36c7f8bda3bf907fe49c110661affedd6b6b4cd9fc87620710a74. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:25Z), 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/SKP952100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdae7bd7d3b3a4ae6dbba44518700f4ce1d5744db7b6b8d99a2bfc04670fcf80. 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/SKP952100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f57ae4d7ca37bfa75847e3fd59adfad232bc8472e2a0847c76530a3ea6a3f1f. 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/SKP952100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22392753a4500e6dbf6758ac3b9dd6e28927992beae5b5cdd2fd1742a6bfbab1. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:35:42Z), 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/SKP952100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bdbfed5603cdcc73a4879ed4f3d3d90867f0abf7da375f2a0d1b54d9adfa30. 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/SKP952100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3fb211614d9bde96361baec1b66681342986b639947b4304785559cd8362f3. 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/SKP952100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be10292999a3b301b5cd524853457db425d8d661204eb9f5268366dc4e6e907. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SKP952200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f883ac2b35651e761a6d775fd40002ed0de9135fba047dc8cc3053119e72d6. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/SKP952400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94062c9a823d7d7f6912aa42ede49195e6025f4557ade040e67ef4ee020244db. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SKP952400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82da50543502dd5b42a3079ae95aa43453a4869fe902e8a89052290ab80f7ba. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:33:19Z), 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/SKP952400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c4dfe21160f6409b3aa3fdd212af0d4b70dc97de098120909907da150c9e0e. 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/SKP952400309.