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 0xd09cb732206775a0ce856b8ada5c573d5fa7d3adffa0485364e84e075f168e33. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf6afa58-16f0-42ff-8524-18a8dd38ccae.json and https://artists.proofprofile.net/proofs/artist/bf6afa58-16f0-42ff-8524-18a8dd38ccae.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 0x40e4eeb241c97d6138d96b89f8d68a13ba66268d0e94511c63809158442ee203. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITAD82000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea5441c2631d120ed4f6e9e45e91b77ae16220049bf28709ca3445baa6717a9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITAD82100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe641894311e798c8590b6b9f8728b0bf6db7963703263d115317f53f2e3633c1. 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/ITAD82100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe7002442fc5c6e3075a4923fbe162c5adf8b4a8b963ad145a963cdc990e4b3. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/ITAD82100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549ba02d4bfdfd992ef94827bfeeba6f38bd4edbe4d3190162ac763ad3f18967. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ITAD82200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4338d8fcc441054f9cecbd43e9774517f831c05801cf477bae2433b9415e0733. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/ITAD82200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe748605a6e210bd2de41e01e0d284ba81af3ad71d34657674703f07d48b20a48. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ITAD82300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f363ccc4a7d19273c5dc1edbf8c0d8850a533ce9f22f5c1e41437870f8d41c7. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ITAD82300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe641894311e798c8590b6b9f8728b0bf6db7963703263d115317f53f2e3633c1. 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/ITAD82100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe7002442fc5c6e3075a4923fbe162c5adf8b4a8b963ad145a963cdc990e4b3. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/ITAD82100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02bba1d2d473259a83aa05b0567a5dc2a3f016f95478dd4cb8bd742e1ebdb26. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ITAD82100098.
House Relax, Vol. 8 (Deep and Chill Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e4eeb241c97d6138d96b89f8d68a13ba66268d0e94511c63809158442ee203. 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/ITAD82000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe7002442fc5c6e3075a4923fbe162c5adf8b4a8b963ad145a963cdc990e4b3. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ITAD82100133.
House Relax, Vol. 10 (Sunset Deep Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe7002442fc5c6e3075a4923fbe162c5adf8b4a8b963ad145a963cdc990e4b3. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ITAD82100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe641894311e798c8590b6b9f8728b0bf6db7963703263d115317f53f2e3633c1. 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/ITAD82100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea5441c2631d120ed4f6e9e45e91b77ae16220049bf28709ca3445baa6717a9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITAD82100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe7002442fc5c6e3075a4923fbe162c5adf8b4a8b963ad145a963cdc990e4b3. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/ITAD82100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea5441c2631d120ed4f6e9e45e91b77ae16220049bf28709ca3445baa6717a9. 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/ITAD82100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549ba02d4bfdfd992ef94827bfeeba6f38bd4edbe4d3190162ac763ad3f18967. 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/ITAD82200027.