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 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 0xe50a9dd754f495b3b988f413b37b03d33e434d84426ae7770d177ec5cf706135. 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/edc7e52a-0215-4ff9-b08d-627b5866e56a.json and https://artists.proofprofile.net/proofs/artist/edc7e52a-0215-4ff9-b08d-627b5866e56a.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 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 0xfe81c64edde41275964fa1f9af6fcbcf5433c5606090e1afdc56414977397bc6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BRYGY1520001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aac3c93cf79b2c11e5b4a9ff79b987aa0cfc5d78fed92b3a99e26e9d46dd0af. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BXOO52000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dff999e69bd8340a758c45a959e9413fa3070ab03ad6d2c7ae6f694062ab468. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BXOO52000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33ccec15d707ed43a578e751b9f2faeca24715ee4d50bc79648da9ef1501c4e. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BRZUG2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49c6d7be0cc8282ae50ada54c74118fa9c0b548612dc3eb6002963391fa25e3. 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/GBGLW2100469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f2393ab493f0010ef124a6737cdd8b64cec46767a81c78ab5fbd450675e843. 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/GBGLW2100958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9922a522937104874db67cc77c3623da975c1d06e7b01edd76319f6694b29dd6. 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/FR9W12221241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb568eeba7daae457f5600b491facb22b1ed92fcf7ef6c4298e09c44532c75e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR9W12230380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5697fd0a1b159b7a5630e89ad225ce0662317dfc40e96b2d4d25372b8b93471. 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/FR9W12231291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfc836607ba7ab6c7b4e8a2d25083eb3b6ded843bcf44666dfd509af423d1f1. 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/SEXNQ2300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfc836607ba7ab6c7b4e8a2d25083eb3b6ded843bcf44666dfd509af423d1f1. 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/SEXNQ2300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f006ed98cb10a7f1c8af6443f628648584404dd825654dffb8e29ed0b920885. 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/FR9W12406938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f006ed98cb10a7f1c8af6443f628648584404dd825654dffb8e29ed0b920885. 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/FR9W12406938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff8aa245b5b7a774f40b2406071ec85272164cab02d5196130b4d211ed85633. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXOO52500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe8262acbad0d15342650a603b130f0921e7dc40a8e491d38be09e1f9e5431b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/NL3RH2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1040cca703764b0137b2526c29eb52170e1d4c39e554a96ddd49f44cc85d0ce. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US6QR2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1398c5d82206859090caa52eed911f86011430d725725f59fa51f857a422c5b8. 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/BX9U82200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2143a1966563730fd4750266ba2ac8bfaf55962a7552e60d5920105aefe7d563. 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/BCTQW2300002.
Straight from the Decks, Vol. 3 (Guts Finest Selection from His Famous DJ Sets)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9922a522937104874db67cc77c3623da975c1d06e7b01edd76319f6694b29dd6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W12221241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1950205d420e845a5812bb6aac90f0f5b4f2ef6ec1b4c02482442648e6f360e5. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BR6FG1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe0d23bb661068148cdbd4116c8c7c45be7e9faf9fe7810740f5badf1e4e2f0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX3E51900007.