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 0x4109dd5856ba18d30d699190f2fed5e74bde58799f457445e7b065b4d83e275c. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e77ab11d-9ee9-4a0d-b021-48ef9acacb0b.json and https://artists.proofprofile.net/proofs/artist/e77ab11d-9ee9-4a0d-b021-48ef9acacb0b.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 0x461ce92a722117c5ee026f6b562a76b7b07805d2cf0ff51cd01a1adffc951716. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:40Z), 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/QZFZ42368834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7085a4af1fc438282e2f3c27f0a245cd7254487a88666d202415558de48c1d1c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:18:37Z), 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/QZTB52326701.
Alone In The Universe (Ichi Ni Mafia Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8f5bc25349e3cf2526d6176a5cfdf61a78d31a42a74abcbef26df4504f007a. 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/QZWFR2333252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924cace39731ac928b4b2e1b3b65f62a573bb6fb2b950131dd34c656e0bbed5d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:51:48Z), 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/QZZ7M2455547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9ce22324e4e431683a0e8b44878d0eca69836927267fbebb8a2080e2279ce3. 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/QZES52588454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc028bcd3c02922b1cd98218542ad01248efa845240b5f98da4825163036d1847. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTAY2598639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924cace39731ac928b4b2e1b3b65f62a573bb6fb2b950131dd34c656e0bbed5d. 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/QZZ7M2455547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de1d23a4f23a1a5245335b95950c19d9d9849259e7dae425429dd99ed6d108. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6K2515645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f7955b8c94f6b775fcf51f4072cd77cf6e3fe3520d7e40860b1991b2232f28. 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/QZDA42579725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e2ed531f74c47c6f0e5ec25975da88c1e13bad0d5cf8b6cff0187e54ff32be. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAY2598641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8f5bc25349e3cf2526d6176a5cfdf61a78d31a42a74abcbef26df4504f007a. 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/QZWFR2333252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac33a075a3a7517736d9d5bf397ba88ea85d665d8c96e55e21bafedddc4de8d1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTAY2598642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7085a4af1fc438282e2f3c27f0a245cd7254487a88666d202415558de48c1d1c. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T18:10:08Z), 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/QZTB52326701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461ce92a722117c5ee026f6b562a76b7b07805d2cf0ff51cd01a1adffc951716. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:42:53Z), 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/QZFZ42368834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522a0cce7566497a4a0a0400459c8ae5d05193dee4f978e4c2018e2518461df1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:23Z), 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/QZTAY2598643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3029aa1a0f80ed214e34f92ad4b0d1811a41ad8a897e823c24c75db9877881f4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTAY2598644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9ce22324e4e431683a0e8b44878d0eca69836927267fbebb8a2080e2279ce3. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZES52588454.