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 0xa4f10d082ea7407bcfe11b1132d1f67e5f08782292c46d145d890f0f2bc63dc4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23a30c3c-1472-4f50-8969-35031972ef2e.json and https://artists.proofprofile.net/proofs/artist/23a30c3c-1472-4f50-8969-35031972ef2e.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 0x57119d7a54f09a59e960de1d3acf6d4ddf0f15a057ff05f9bbd56bb1e0cf1674. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5152300706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f35508ca5f2f8b2f53d1a57b19dab35771a6575a6ffc60ec26079a25299c090. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5752372188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ad0088c09c9d33d5fcafa5f9d214971a1438c7d113c88ef39b113f0a6bd345. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6SA2254342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1728402adaf75fafa43b9b8de26c134b11bbcc9fa0966820219a78454cf02a37. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5152101158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc119acea56ba4aad37dcb4f8c01f30b507f901a94b0f58054cde6982b0ed3e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES5152100492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc119acea56ba4aad37dcb4f8c01f30b507f901a94b0f58054cde6982b0ed3e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5152100492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026c66a048eacbd384d47dd1ac363e4cf3ae35352cfc98bbd935a13c13c06441. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX282208380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945d42a208966e76e13dbf0789897aa7f51580ae783190e0137cf5fbb542b500. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES71G2141514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86b928a1ebdbe391f7aef2b53271fca6811f716e67572f055ebed5276095874. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES5152100576.
Ring Ring (feat. Mentaguay, J Holland & Aren Martin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30bbce751fa7a61960a69d8f45d1a11e6f0965d5d2572c399602ddb0260fca1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5152100577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe660d675ec6ff676b7af9ce769885dc6bb961db71846912b59712a1fa009990c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5152100579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa0d68f59b732187d50dbb166fa8903c750cc74d1f5b86dace3e8aa548cb285. 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/ES5152100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579bd22fca25a440883cf180467ee63bce913e46d1adc488b6d0a7e09dc287bd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLPF6765586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd17043014704405291ab6ce0223a39845c2484fe7bbdef6bb67c2188a9fb7f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5152401317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d685e5b92bed082c48548941d07646b3cdd4ef4a07e91d7bc910c88cd5731da. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5BU2429819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f35508ca5f2f8b2f53d1a57b19dab35771a6575a6ffc60ec26079a25299c090. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5752372188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ad0088c09c9d33d5fcafa5f9d214971a1438c7d113c88ef39b113f0a6bd345. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6SA2254342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bce9abef77f1b1ca05c0dfeaf89545e1e274f9704e7ccc7c5644bdbb442213c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES5152100578.
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 0x9ed814d3ec3635d815d11c228116ec4037871f958836ebb7531967d2c5a13414. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ES71G2249359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6128b24e475783f10eacca49929fb72d4366abaec6d5398141f2d019d860ccbc. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/ES71G2147031.