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 0xb30310ff436591a50308b7b0ed4be57e34c75513d8d382667fedcd162a135142. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da03cdb8-da02-48fe-b24e-43c828cf6c5f.json and https://artists.proofprofile.net/proofs/artist/da03cdb8-da02-48fe-b24e-43c828cf6c5f.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 0x313e93fbf3cb8225e0d7780c739b5bf23252464a30b3942a6a3187f60024b5d8. 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/USQX92001017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e19f49836dfff57a59ef7110a01de026ce2fd73a4e94d99050a6ef3e17d8757. 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/USQX92001018.
Bedroom Floor Feelings (feat. Marc E. Bassy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1ba38283ce22fe1c2c4f27c3bc53b893739ae86d1abc2417b8b5c4373e32f2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:17:59Z), 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/USQX92005797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7651bb299f31660556cb88c16efd0c3befa0bd868297f7b7c4326907451b7fd5. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USQX92100728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3221c9af323bf65b034ea83e54f65c8510ccf6d318de5380000dcab412b9f3df. 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/USQX92101379.
Thank God You Introduced Me to Your Sister
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c33fdb4af691016441e5b7f0d38159e8dab7f77a29a6438511f6a02a93a4a9d. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZLBC2200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ca0ba5f6b7a58abdf15cc6dd0037dbb5c1ef72911688d87d5a26e93b92cbb0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZLBC2302082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ca0ba5f6b7a58abdf15cc6dd0037dbb5c1ef72911688d87d5a26e93b92cbb0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:09Z), 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/QZLBC2302082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75647ac4b952421a45272f0a2c2bcc2393c1852b685f12edb5ace78018934c9. 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/QZLBC2305499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e307ee4d0b2c24e96568ebe7cfe8dfce479ee20bdfc57069c9756031077cc42. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZLBC2308182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e307ee4d0b2c24e96568ebe7cfe8dfce479ee20bdfc57069c9756031077cc42. 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/QZLBC2308182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f7e83cdde061927e4f1d5d1863e00be440d94b8a555ab1174ebb10a7feac40. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZLBC2313150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f7e83cdde061927e4f1d5d1863e00be440d94b8a555ab1174ebb10a7feac40. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZLBC2313150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd8a3390fae59b9c7a31e0afca2d79a34346b170b7d350de5b1254f7a062102. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:43:02Z), 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/QZLBC2323111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b743732aa77f11856b87f5da41acc921d5c07946b4bfe3fdcc548af44864322. 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/QZLBC2334018.