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 0xbeeb16a6ff8729a135e88c28765e0499b571263ccf65b524b6196736f04d7f14. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bf2e03a-5dfb-4518-bb1d-fc29bd3f01ee.json and https://artists.proofprofile.net/proofs/artist/8bf2e03a-5dfb-4518-bb1d-fc29bd3f01ee.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 0xeb5b2a6de207f95198827ebb4edd980a69681241423b468a0ce24f54432416c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62259545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e1985748b8da8e55b77a9a37e549e7683a733a0d53d0ede87f53b5852bcdde. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62259556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17834e0acfb79d0b3634ec4adda6e07eb004fda7b21bf3f9020c9c4865c34d97. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEZC62259546.
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 0x80e1c18870eb50ac2b12fe7039ee3dd2bcfb86a3d9a216584c1a8dad9af87a8f. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEZC62259547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a1999de8081f562086ea7e59375a94322b78fb3f57f1c0b3f23df620b2eed6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEZC62259554.
Fire Water Music - 1. Satz, Ich Wendete Mich Nicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7514e76f11c58bc0821140c1a816ce9e78a829194bb71193caecf0061b4ba3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62259599.
Fire Water Music - 4. Satz, Das Geheimnis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb7060df02b158e7f46f17099fa36fe4c1a421c574b43de3506fe62cb779eea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62292597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fd9bd24fcd5f2ea42d2ea6dd7ffcbe9a437b81dea73cd3d7a80af157deee63. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEZC62259580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776927a511706765ece4ec02c008ef0aa66fb452eb4ba8712c3ea7978384d48a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62259489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf54c695d52a415ee4d79f0c4e651edd46441a071dd38cebb0dab3c5364516bf. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEZC62259466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa4c232138095bb63bf856cae8dbff514138752192cd9c572b0bfe1ff120884. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZC62259476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58669d367470efee4c83b7a8eb2f9a78b14b88350751eea4feb51e03845bd70f. 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/DEZC62259477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1a97eb2510715c8bc3d66e951210b11c2271cf6d9c24de438157070d851632. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ATS312100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0021f0701103a8beea221baf8023fff3109d2857f8e87abe2e3cdc6ace7dad4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:28:47Z), 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/DEZC62259452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e9052fad86107441cf4f90121589babc0a7e36bd8c305d234a8ca3572bd303. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEZC62259459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810db19a3a9360148ce7072be2dcbcf9ed6a6186fc185678e9bcb6ddc382ac1b. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEZC62259460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc7a06ef72998846ed6085f959c19ce66226e240160c95019b8aad73753da72. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZC62205729.