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 0x5bc0a49858cd2f05eeb6de349cc85cccb1d4aba1ac1dd396591eadaac63d80e8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32144cc1-77b2-4806-aa49-703d5c399fe6.json and https://artists.proofprofile.net/proofs/artist/32144cc1-77b2-4806-aa49-703d5c399fe6.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 0xfb419087b26126ae0431216cd7643feb59421616fea6a00aeb15103aefce92a2. 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/ARF411300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ce2562e4456e4c91b8701b1c2fb8b6230c96c0eb4412f0ad897bbebc470fc8. 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/ARF412200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759af735fc7bc63675c487ca15cdcb10f4bf962475a3fe902572e9f83c5e4873. 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/ARF412300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46f15befb1a78d2bae94ffd0440d33fb7f47734b2e77155e28cfc6a317196bb. 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/ARF411401084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7416281ade369aa555e424a74a050ccb927a705c1fd2852cb9520f344985714. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/ARF411600365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb419087b26126ae0431216cd7643feb59421616fea6a00aeb15103aefce92a2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF411300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46f15befb1a78d2bae94ffd0440d33fb7f47734b2e77155e28cfc6a317196bb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF411401084.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66292cfc28fdb135bd5cd852df0202f55cfa51958f562a51843ba394915a2518. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARF411900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e848ea89ce123a13ac98427c3d831b435a89ef90485131a45b12c78e44fb099. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF412300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66292cfc28fdb135bd5cd852df0202f55cfa51958f562a51843ba394915a2518. 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/ARF411900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb419087b26126ae0431216cd7643feb59421616fea6a00aeb15103aefce92a2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARF411300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb419087b26126ae0431216cd7643feb59421616fea6a00aeb15103aefce92a2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ARF411300278.
Vintage Reggae Café - the Definitive Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb419087b26126ae0431216cd7643feb59421616fea6a00aeb15103aefce92a2. 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/ARF411300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46f15befb1a78d2bae94ffd0440d33fb7f47734b2e77155e28cfc6a317196bb. 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/ARF411401084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246fb0632986b1b61c23ec8653bd9d88c4727d8f20124df167ad6b208125c469. 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/ARF411500981.
L.S.F. (Lost Souls Forever) - Reggaeton Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a12bee6fa9fad3c048b712cecd437316abe40791791278d7f5d1dc6cae1a73. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF411701239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb419087b26126ae0431216cd7643feb59421616fea6a00aeb15103aefce92a2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ARF411300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1dc1ddf7ad2e1ef07845cad35c2af21156acbfc244516e3fbcb8679d925ca6. 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/ARF412100186.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 21
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd503033d87630653e21ad9cbb7c2613563c04377963d067f16963b19a6050c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ARF412200014.
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