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 0x352029b560212d21ae8792978288b6fddf92ea8f7a3186b95d1ab6ec3e309f42. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c5331ae-f4fb-437a-aeea-18e4f8a4c05d.json and https://artists.proofprofile.net/proofs/artist/0c5331ae-f4fb-437a-aeea-18e4f8a4c05d.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 0x4770886e1d28a60ec0505d78762a52105e6abce3075db5c908c512913cbac34e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEH742420635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045686f7907af9e9ce267fc6f28533f7a00938435100f2d1ac2af9f6a6b29f41. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEH742400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675a36ff01871610a85f1abc878e9573330a1db3f2d7887d0b2327d1955a888a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEH742400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0045ef5ef8dfb8f4bd981008ae0b805f9751e031f25fb6f6b13309218d8540a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEH742400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cfd544fd97261b96e62a8cc1d093fc1bf5b8f83b489d047b4c774b9fbfa5fa. 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/DEH742400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbeece5995d648e2c11842069b53c61db68578e76f7c9fe5965bc3718f18004. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEH742400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2b18ed699a065fa950699b5a41141510f44217bce9473c5a4f6f90010d7c03. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEH742400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fb201be9ec178f74377403651e061d7e1402cea8bc9a98a6d4fee65a320c9c. 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/DEH742400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c15dae9329c8b5f83691652aaccc6f1f8dd609c9e6ac361f62db36f3d3dd59f. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DEH742315403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9bdebe9be4a069a7d2e3cf32103d4c18c7f6a6aa118484eb8411873030f8e1. 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/DEH742315404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a96caca7f270c14f1a05d975e676ba68cb4a72cf984e6bd335ba00060514ac. 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/DEH742316162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea76350452de16b986e22ecf2424dee393cd036a0eaa1790de60e35e4884220. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEH742315405.
De-Spho & King Tee RSA-Road to Buddynice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917f3471d936b54852501c93530bd06ce26e4f888adee31d43bd6a5ffbf00eb0. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZK6F2143540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba77961f048a3446510efc75105442eac7e7e14f8a6a37dbb91660e798fb9c35. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZK6K2184778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a5aaba9854f1a7bacbd4fdbd73f97306c8c8e271c8240fff05f2e68515f4f7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZK6K2184779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9bdebe9be4a069a7d2e3cf32103d4c18c7f6a6aa118484eb8411873030f8e1. 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/DEH742315404.