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 0x1c5d3e583d4a280b6f0a5d5e47332265aa962448581377966d669813e23fea21. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bebd3a02-2183-4437-8c35-d8fde3d8617b.json and https://artists.proofprofile.net/proofs/artist/bebd3a02-2183-4437-8c35-d8fde3d8617b.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 0x0f706028a63745e977cff44883ea4a0c4d3efb499830128ed485c49b6fe76b46. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBSMU6497511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2e4a6744d9037b777030f757fda5823512a4a799f991d4a8fe4e25a91bb1cc. 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/GBSMU6497512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd265a9490a59c683aa29b86898cecea66d9b81920bc98cc5b735127b0f61d3. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/GBSMU6497514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d035ba64a75c4be3171ba300f97aee4c2007c665ee84e65e9d48eb6cf1a7ec. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBSMU6497515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975e8a01c312c3a28ea2eb4fd25b2c5b724650c2e7edf599f7e99e4f59171c8c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBSMU6497516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0015a4468bdae9af359a914fe8ccfc12e77733e697959c37eebaa509288f5f0c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GX89G2353208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a8465b0e1c7240d5a5acb3540d223aeb02e40112157a987aca48e6b714e8ac. 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/GX89G2310384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1142bc0e9e2359be02d5b7e526892e99796c15883b5462be1d85b137e411c9af. 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/GX89G2314994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf412a4ccdcd741897c35a6430616045b87f9cc9163a373785fed791c8542e3. 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/GX89G2384955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305a252f0ac204801af3df692ac832aa720774ea77fb34b8c77062a75f93d44f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX89G2308753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71568bfb0f0017ed678ebf1aa0db3fb44afb4d1cc1dca681bb1e3c2c525ec5ae. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX89G2317199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38387ab49b4f2371667655bca29d8f52fabf74fe26cd7d05dadcfec6c48073d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GX3HH2490279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcb315adcb6ef3a98e41cf2ce4570f375a63fa3c3164112cc7a61ee6952c063. 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/GX3HH2419208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d91c78064dbf463b6e3b28cd386fd4906d84f0c0126c417173a65ec892cff0. 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/GX3HH2445141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fbb4cc57c790299f766b1bfc4ef929f47aff1ace0136c3d77da72bc29a4f2b. 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/GX3HH2487458.
Melodic Jazz: Tunes for a Peaceful Evening
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08108e0cb9abe965e23c3da300fa35bec3b12126d698c877220822539d711225. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GX8LD2562723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeba06a970e27e711031bb070cf184773e8720411fa2f8a97c4ff16c0068c366. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/GX8LD2551478.