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 0xc7f31592f5efdf4b89966752c54ebd9cc3c76fc3bb8b2ef1738469fac82d4049. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6af8cd3d-f2d1-44fa-b7bf-8c23d722fcce.json and https://artists.proofprofile.net/proofs/artist/6af8cd3d-f2d1-44fa-b7bf-8c23d722fcce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
3rd Avenue Essentials 2019 by Alan Cerra (DJ Mix)
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 0xd380bfae1ea76e92f02e20f0bdda283559e0f3182953865157fbe5f09f62f0ce. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/US83Z2023272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd380bfae1ea76e92f02e20f0bdda283559e0f3182953865157fbe5f09f62f0ce. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/US83Z2023272.
Travelling Through the Clouds (Shayan Pasha Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5843681560e05e91acae84a67b2e4c331d3b1eb60ef8b537f657ce1ab07e389. 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/US83Z2316829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4049610d5ecd7f7d943b32b95cc25daf8112a71fe6c820627f896eff46e7543. 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/US83Z2521460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b2906a77980ce89ded6eb4e48b4b27c4a807a38290d1e72b7f5c708c5378bc. 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/US83Z2521462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb894bec12f8001d3f0dbed93d27883e1159282a0945f1e3b1b106107f10a235. 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/US83Z2521461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61645e1fccb04bbee1d43572c13b53c547f8b8fb8d4662d389a4d482ba3b460. 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/US83Z2526428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d13f403f05b3e09fba78ee420860928c0d7175412036ecbe2c7f39d83c1ca0. 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/US83Z2526429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db8517320b638fc7056ba9609c9dc7af99fbf3333d1df446affde89b3cbd022. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/US83Z2544554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9246b9691e87aa73a7d5ca1bad34a3d6a8c5b5dbe8b4b5141918a7c87920b4. 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/US83Z2549594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322407b74bd923046a3d495d3a8493558e3df65ce7031b9490f67ef2b83cfe95. 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/US83Z2549593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fc5f6180bf688d99ccd723b44df03be82fa0181660ca26df9fc117576b4f9f. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBKQU2198141.
Glowing Forest - Alan Cerra Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae74c1b14829ce9b6c125a4fa2b69d2ce0e3c5b5876008c4e2d3d458420e4ce. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2130614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b3beea12e961bf1dc207365a6dcd82b33e59bdf2de5ef3b7b670c31cd06c6e. 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/US83Z2306374.