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 0x3e95908ea75ae2be9daae4cdec3980105e2c6306cfee64a29a4f4d258f921dcd. 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/799d4ae0-c052-4fcf-beb3-1222622d8628.json and https://artists.proofprofile.net/proofs/artist/799d4ae0-c052-4fcf-beb3-1222622d8628.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 0x55fa23ed21abe269ce519616af003a77e033afd527cee4f22676de2bf1f2c6e3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:58:59Z), 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/ZAA029800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721fa5023f1491e84641334a3ffa1492bbfc2a39b07ceeb9a4328eadd9110a61. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:06:15Z), 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/ZAA020800593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d88e978eadcec1a9db984d356725fdf2d39cee17051860e2664c25cfc68f7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ZAA029800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4790aae52687d41ec2c2653fe4b4749f1d0468048edb63ac042917f4030fc2a3. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ZAA020700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffeccf822876157bb35885a8c45eb7e30bea681beb66a438dadc947d4bb77a7. 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/ZAA020700192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdee16cc5e759efb9cccb95517835ae6ea9abd39486a1766de617f9aab823fe6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:24:44Z), 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/ZAA020400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3782b9e0b3632329fff6f08a9f5f46e09c1b652a851c202e766955048f544c40. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ZAA020000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126d0abc71f73cd6145112cd57a853a939e7e74c27ad993360c77cd1f90e5a86. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZAA020000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77923280f21308fe31c5f5fd9ad103d52641a65162e9137be3ada3866ae0f1b2. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ZAA020700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b98bf3771972c3b3bbdf7e802f515f6e68367ff6039a6fb4899c6ad7a387352. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ZAA029700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2820ef9e9a047e99e4fc66960d5efd34fee7e20195f5e48909afc811dad00b6. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ZAA029700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa7008eb301a7732b4c797a3aea48535fca6c58c4df99dddd8e07b9900edd4a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:26:46Z), 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/ZAA029700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6d74f4fd083846c2b97c74908430ea4fc7f380c63ce12f8a118f6122e324e1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ZAA020300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14462bef2c421e9fcb35252f1594ae29ab5899e0af21d2048d273838e372183. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ZAA020300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0272b48f0e17279a46a9e37040746f7a58511bbd7a2d6d864b909b9d3f2f748. 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/ZAA020300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00be12317951682fff505258fbdb1afac9e3ff42d7668ec4675677034bdfa833. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ZAA020300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e77488bba38082f08df686c3920110b70129dbf5f9855b3460abb193e6647c2. 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/ZAA020300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9f6fe6a326f58ef782e4deef596e5d886982f1e546264d902b4a51167cae88. 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/ZAA020300019.