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 0xc9995086bdac40cc13694af525bb1faa6e409389babd0ee2670260e1fa40ef6c. 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/ac4fa450-bebf-4938-88bb-876512f208cb.json and https://artists.proofprofile.net/proofs/artist/ac4fa450-bebf-4938-88bb-876512f208cb.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 0x25c364b7198e253a3fe4b5158b6e76a31084da704909aa61e24ddf8f8b7483a6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:27:42Z), 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/FRX851801252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fdfb4328dd7957403035401b0d05779a895917792857279cdc5b95afee1ac2. 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/FRX851801253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8109aadf8c81fc210c23c09f639266373d72b14c0178f442fe27e67ea622105. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRX851901791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a0fc5e4d288ca75d4682f4805bbe76ee76b919ab1ff306e925f82c4766d9a7. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:35:07Z), 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/FR9W12114635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ccd186a97d552f2c36b5c6541666f76b7faaa669e1fcb6e8f28c600f6134e2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W12114631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3fed7b8db0aead4a779b4d948ecfe4e16f94650f076ce06147f81dd472bc66. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:53:24Z), 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/FR9W12114636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4b1e121441cbbef91122d567f2a49c23ae85d48fd1ac113806fd2840ca72b4. 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/FXR142200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436b48ed90bad4d520abf60590d83b9936473aa96708045c3494616a566227d4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FXR142300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e8faabced65d6bfc6b681e40ed549f8f35b5ea58c887e4ceabaa3200608bfb. 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/FXR142300062.
10/10 (feat. Moken, Capou, Aketo, Lucci, Chanje, D6, Hash 24, CHATNOIR, Celestino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2038b0131efb8a8514e42151393e3e71c10085ae65f5bbb1ccd1d561f830b3c1. 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/FXR142300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960ead6bda59f80035afc6b0ddb6acca5f829bf32fda5294c072fc77e9faaf7c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:09:52Z), 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/FXR142300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d956e3c24cf008cb965619ea335378b4d14a69ad77e5c14f9e72db63af260d. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FXR142300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d5b0172a947bf19b00d1f2ee1a0f2eeb18b4279186ef6f18074396824bb655. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:14Z), 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/FXR142300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800eee2587619f2b251f9f55abb1d000639ae31c8a222f2b64a84ce5a489243. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FXR142300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eacfed8811022bd87f78b36240922d549d506ce1f975f64d34b770ff3370848. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIW2448042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb57d133868c9c7461ccabab3d10ec9c41cbf8179341160d0a0c27bc72519ba. 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/DGA0R2480638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbf1e39e2f4581b5665ae3b95407c9c4e375a4b1b75ca855d63f1bc765afb79. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/DGA0R2480639.