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 0x7255262cd1a852cc1451e6a168e5f5c22a0b363852b38142d0bc3312007e3ff2. 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/65913caa-6b48-4359-8e5a-ce516cff831f.json and https://artists.proofprofile.net/proofs/artist/65913caa-6b48-4359-8e5a-ce516cff831f.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 0x3286cd824dffb36c09d896e503c10db6bc548b64e7ee14655f6c12d5f69423d3. 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/USWB10202172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451eb794a59d43b6224a45cea10ae8f8db79671c963d8a408ba4f2cb33f67a0d. 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/USWB10404171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80247c7ef52b2b147e4931c4d1add063392d6386b1347e35a2817ec7c2a650f. 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/USWB10404172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8489d21245af2ea34bb3de47d2b91b65927eb86e4291671f21c972ca1ecae578. 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/USWB10101322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099be612dc28b353e20d342e95de84401d91d4f98d6e79904ebe0f9a1f68ba75. 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/USWB10101323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e57492b2b53d25379ec22c1d32737d6b1df7fc97e42d5be523f7499210db5. 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/USWB10101325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c4b60d05b062cbfd52a9be40488dac646f34ac9a7f7c3cb96ae44f59ff646. 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/USWB10101327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977c6d81002bf1e9b11bad9c0d37f43faf2e03825962ddc609f4d9eb3df23f00. 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/USWB10101216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234a1cb8d03445e118b300b5a1feec17b8b9f89f650c735bf29cc9a500b2ee50. 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/USWB10101217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5871e63d36de50084eb1b7d7b7df36e5cfa237b71f3a202afeeb0be95c5d0. 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/USWB10101219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a1ca0873131c811dfe0906412cf7ede0a9c94de512636841a8f380e85cc560. 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/USWB10101220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4938f03c480bf82c99a22b842398f45287435b39b0f8183647eba1b9484741e. 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/USWB10101221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9b32110dc46e335e973ae2019eb3595dc08a6c4eb1e8fdce57a999b5f9f1cf. 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/USWB19903583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697571b2577997e95fd4af6df92c93a9b67e14e929e1bb8ac6401ab653e8a76e. 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/USWB19903586.
The Time (Expanded Edition) [2021 Remaster]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f76fdd6e83bf6b5a11655f63387199566d48e0756501fed05b16d7093c8570. 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/USRH12101611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b4de215872267e4cf917d160c87d936c8742d9c163b2150bad67282e46fb28. 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/USRH12101612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819be6815fe13e480c0c6e42c21ae511736628845223dc59905e5ca0e6e099d8. 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/USRH12101614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fd52161f43b57547d671d356fca3fd1f199876ffb2fda6fd706433326ff644. 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/USRH12101617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9d66b8ba772c8fbf5db19b83458d8f381ae4ab1ca58b122d8209ce60bfdbd8. 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/USAT20802868.
Born Into The 90's - The Best Of Progressive R&B
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a2cf5ea729a1a0395d60f57529f656ec11e51cf6f2e51dc7b441d98efab7d5. 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/USAT20104390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a985c438f17ea72703a09df8398dc0019cf9eba49faeb5f207e60a73b975eb. 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/USWB10301938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e014d281c84a52fd4fd91ddb3a76b884ae33e4a5601ed77cabde2150d04215. 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/USRH11802596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde93c01f158396e47e1d3bd9662d844395fc80ccffea945a7200561ffb27da4f. 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/GBAHS0104401.