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 0x2948c6464eb44ae58af558298ae02a9906721861210c9622e252756233137e68. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6743a96b-76d0-4693-80f3-c15e05f93b36.json and https://artists.proofprofile.net/proofs/artist/6743a96b-76d0-4693-80f3-c15e05f93b36.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 0xe6a07624595e6a8d0f03f541c64344130c956a7628b6a738d4e5b27423cff4c0. 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/DECY61700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b3d3ee82272a997b52187b72971236c07b6aff163ef86ee5c8084729d0e940. 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/DECY61700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c653786f2eac480a305108ec53d6d419c80e902557b04c5ab414e62c7d24af. 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/DECY61700076.
Whities 023 (The Act of Falling from the 8th Floor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ab38338192c8917af0223541095a788a67509b3f4649f4e0091e2816576cb1. 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/FR96X1912677.
Between The Bullet And The Front Sight, Casting Lots (Live at Haus der Kunst)
Preachers Never Said One True Thing - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ee5346134d2d6129b84200b8322d7b1df0c2ad873545a6025a3df64fe1e3ce. 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/DECY52200442.
The Point Minarets and Institutions Cross - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc72a05f46456f60624ed371f2d94ffca362aa991e29077f055a92346474cbcb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DECY52200443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979441cd6fe4697b7f614bf40d9e4a9c0cd3db605a49c49d8b318b69b0233e3f. 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/DECY52200448.
Wanta-Fad / Each Lonely Prisoner Today - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322b3e4935fea390a3e8629e0aa5bd2b076dcea0440d3d6279cb12434b71482e. 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/DECY52200449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0d6905a1d407fce95805f3c11565588e747fffd9df11add90cc1150174bcc5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DECY52200444.
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 0x68adce6d642a56dca4564ed6ff251f55cb0b5c3d477b4ec25161b3c6c413bc73. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/DECY52200446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43643f447f04b28d30846893a98a2e2c75c8ea0f13b3fae4a826a5e879fc48e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DECY52200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4a0257403ca6e152f43980d40cbf331d46be67ba2e384322f2ed7fb3ac912d. 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/CH6541979988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c4ea58667a6fccd806de82cc4317fdbe98dfe4ad1225a97a1d5ddefb339280. 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/CH6541979989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acd1c6c8fa17d67fea871eaac962d0b334d8dbf27f431ac934e515bdd7482b8. 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/CH6541979990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6e3fa9baab350c1570377b8bf39652559385799f2bb673759159938bd781af. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6541979991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8709ebdae2dad80ee4291650112a17b76b9214220c228627e8cc88e617726a6c. 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/CH6541979992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3044cc00ed7a8d57392f9df5c273c8247674a5a079bd77165fd57ccece50dc. 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/CH6541979993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef698d92f3f84ac2776d1dc7f9e0c08a0deafb9e4b8b849a16353588c3fdf348. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/CH6541979982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b026417874c1124933e5abed884d139dfc35c75ec93b2c84813ae2a8a86242. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH6541979983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dc695c3ef3dca3b931feafe8ab6c612fd221cb54ed22fecd994b3edf104f0e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CH6541979984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c40d9328e2586769819f7e0010997ae260349098ec14e9d437ba0a3d015bce3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CH6541979985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e6b203aed8ea70c3b8623dc4f1089e7d4cfcbc25f3dbf6b264efcd783ff34a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CH6541979986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12339b57ded72cadb55561c838c82df65d7d3e002c6be8ecb2a8c3961df719e2. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CH6541979987.