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 0xec6943a9c8e4e80bef7c18af8ae5b255ad971cecbd73f528f2ba3b38eebc2f2c. 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/00a5ad78-238a-49d4-bcc4-2419dc3ffc64.json and https://artists.proofprofile.net/proofs/artist/00a5ad78-238a-49d4-bcc4-2419dc3ffc64.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 0x74fc32797caf2a4baf7273fd8f40ebc4b26c0e7b2307071ec8a510165e24bcaf. 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/BC29R2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556d016c123e271152e39787d11fb4dcbb1abe1e0a1fa242a998df75598503fa. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BC29R2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fefad6f53696d826285ed2c551d31dfb579bda1cc1ab51a5c3dde0469bd04a. 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/ES06F2402539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0090fdf1ba4573072dc98cf42c8305574523925b165281585103319099d90c1. 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/ES06F2402540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711938f5be94ebdeaf0b56136ac43d9ce3f98605a3b0f2ef317e7c548a5ffde4. 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/ES06F2402541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58380a4f1bee1f6188180486460a0e9f4da268ee6fa056cfb595858e77f9bf0e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ES06F2402542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d53fcbb0f1ab47f9476d7e8a32333ba4664df766b84f60e26c00f5d4317767d. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ES06F2402549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf650add18d608cc5847e260643b1379a7d0181f8aa9647cb62aadb40df1ae5d4. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ES06F2403048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868105ae441619f645b715ea382b49159aab3c6b213295e63f37f52d1bccafdf. 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/BC29R2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe395e38ab558b41a9aedc6a854eeb7c2e5b131ed2f443ffb42575cae0e984680. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES06F2403343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086f381cc33000d2806c980e5522cc8672a10d52574d5ed6f8e875bfcb70c1d9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES06F2503387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad3c1d10587db5c44372e02f4679acbfcd8d071039a6c0e3aba0277289d5d39. 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/ES06F2503388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf053599a28698adbf100e34e6079a5dba37b51c86c6587e3ea6c3f4f51515cd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:25:43Z), 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/ES06F2503389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e214e49216ae9d8ab3a7362862eb5441b2db1e43f2fb7d1ca416d980b938b2a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ES06F2503390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0157565fa244b99b6943704457872011e1b1bd18ae348e147124c11f20f58d43. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES06F2503391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c32f1a66a5909dbb2869ac6fcc93e5fba43e34e1276f3fd846de48c8bbf7d07. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ES06F2503393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bbbcb64129c38b7031c8493a81008586979a350353ff294c800229e04a928e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BC29R2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91359730cbbb278ba54e37a9d473f384b6f89ed1cca20004090a285e8ce230e6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZN882566082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d174a97ac09106b459a94d6906ec9e2d2a3f4ed5b1ac257fe7e8e5b7114f33. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZN882566083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2066dfbbe559ad9fc2cd9e5d7f3820e22b4d169bffe1a1d97db593c6cf48a10. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZN882566084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1bb3d3ad650660f6c31ddfbdb013fde68528e5cf56bb44d8313b616e89e79d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:30:11Z), 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/QZN882566086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34b68e51780a3fae24bbd8748818f0dd382f73d85db8eb0bf09d527400bc503. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZN882566087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5673aa1a9c12c5d31e79a475367e2396e1a7dd4ae694b1a8696c1b3c7ce49a52. 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/ES06F2503568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418a6f4211b58ff041bc8ebf07abfec2c19c057a972ee75e9b38837735be4252. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/ES06F2503605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56e1aaf9a409b7e70a42a68499be0ecfb01e0bd29b4f57b9f453e9b845723fa. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES06F2503622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0e4fa6e2a8faf39a10f5145e2bc7c094947ffb3d082aabef7e1b245bf5dc22. 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/ES06F2504065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b521838d3a45f836e6dcf34678bf901c31c7f5cbd416a667319ff307488447. 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/ES06F2504066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2284989dfb2dcd7b34e48ea4c34ec2d0e7f5e23275d38a5df7e31b24ab7f49fe. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/ESA112580575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc473ec42c5c41c9c692fde5b6346876e91cb252dbc38fffcae45925a5e4881. 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/QZN882549393.