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 0x22b354ac8b8950ac4f1d541417d09152b57765bc5e61d4ec6e80176b07668762. 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/1d9e5359-d767-446c-a735-11ef7c71abdd.json and https://artists.proofprofile.net/proofs/artist/1d9e5359-d767-446c-a735-11ef7c71abdd.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 0x2d4825a6532c1a4e9abb873c29310a5d39813939c5768e526e77395a004ca53f. 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/USQX92306422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5771cb592de2c4696b414960f4db9c18821e4f7bdf66459ce9837adea89b39a9. 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/USQX92305379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf653b9d5afa63d96399cf19b6a76324b4008527280b20fc7005fcafef23398a. 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/UKXN22032862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29221bb568dcf80d6d5c082435a07c33443e3f44b8e983c778efae7616d09925. 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/GBUM72402617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159b643d49588be7b7751384466a636351b56b1a8366046af2057652cc581e96. 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/USZXT2454344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80baba6d8dd3c8ae8076a316b64aa0f713685ad3b4c35ff866b635134cc4cf3c. 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/QZMHN2280818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0796065ea4d15a1150a567b7b586ad11987c63f547228b7eb8992bd64cf874. 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/USZ4V2300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045e98906dde7499cbf37f5b8abbe2639640c160b61012ca429a5ab214e4b925. 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/USZXT2350672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa68b2742572428c8e25a2fa4b31792eb1968f1a4fe90901b7af7fbcd4af7442. 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/USZXT2250230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dba0ede8f45d6c838578a6466a894e0019f3ce7455b8e1acfb4fa2803c2157. 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/GBJX32263042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf789a848a384afdf06d722997518f6ac6b52e24b20ae28c885f47afffdcf05. 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/USZXT2250089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffb97a7487764acd6d03d9da87e1a23d48ba6be7bfeb2f4c89bc698b7543a64. 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/AUDCB1701726.
Pure Bliss Meltown - Gerd Janson Dance Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1664a28a0a13cc1d733609db1b42b6699ec722c1baf93c7fc3f6eb3c3e49acf1. 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/GBJX31964049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232c50cc510c2165e1f5ea95cc6bb8111baabe63905d12dda8e4787536d9823f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:15Z), 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/NLZ542001214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee51a2487593f8fa2e9159b2118d61b71d58bb1877b8fb1ed84e5892b3405c3. 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/UKXN22089857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55048da9201c0db1d2187898bb1ef87ca439bdff8317f14c0a6a315b5afc4ec4. 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/GBJX32063018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb012494de9d5424eec5038b5fb526bc65dd5b5f44cfeedb12a72099b56ed1454. 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/AUDCB1701584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaf2e8131866591ea1c21b9fe10ed57d2d2ae38b40c10c572862156b822caab. 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/AUDCB1701585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e256cfe5103fbe78d8987930f8b69170825983eb3bc34e7bd377a89e8cc812. 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/GBCPZ1916171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f6c9b65829dcbed58e8359fa337cd231ec4c394879ec42c4abc1a1fcbd8689. 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/GBJX31964008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f194a5d9f11bd668c366b226605709ed3c28e078bd11518b67b94f8b7b6fc4e. 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/GBJX31964010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe435057ccd235f638f31b1c4e5658441a5d1ecbfb37e58e8016df6e7a03b9bd2. 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/GBJX31964011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28672a737a80c974a4c10f2319ccac6b57d6b07dc88bd01034d83e6f26525045. 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/QZES51895965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ae55e375c9699cc349634718e016f8f32d6b8ddc7cb79cdfe2f81b9e4dbe5a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZES51895966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4faa4e747d1307848882a3f1517d502c7581a6d3da3467b990f476ce6610870. 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/QZES51895967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39960540da52336723c536571594ed5c21b88f31f8e9310502998001f13fd0b. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:19:14Z), 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/QZES51895968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cca3accd813fd2c0b7eb41f3d1f321742ac6cd99e66278172f52e631508609. 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/AUFF02100202.