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 0xa4bceb15a21b1d73bcbec23525907ae4c62e6c8a2c68813ca4271189b8ecf7da. 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/6502b21b-8b7f-481d-b1c4-63d326b7fe1a.json and https://artists.proofprofile.net/proofs/artist/6502b21b-8b7f-481d-b1c4-63d326b7fe1a.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 0x1f4fc327b5778b48125d7055a4a78bb54773fd0dd879e47f44c09e17b07b83d3. 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/ESA012173485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0326dc7a36453bd648f943b6da26975f12b74d29279bc5dda7708459f564a9fa. 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/ESA012173486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c6a0fe6033953e469fd605e816e55a52a59a76e455e69efe4a1b66d90c8b83. 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/ESA012173487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427927034fabb00a57c4ea7cfb292d13a90e36368327307ccb8423b748d6a1fc. 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/ESA012173488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d573d9cd74d090cf7b9c4a79f4dcef663652ef89619795db52a1faef5e52bb2. 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/ESA012173490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc344a0a1396e7e895d3ddb1477140fa237c0629f00f6b4619cb1d036359402e5. 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/ESA012173491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9a72fbe06723a34b5c25cc87c45a03838596f0667bfe8d2b2854ecf06ef744. 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/ESA012173492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce3e901c88b479e55a124821c59c79879695242af0f7e5f414e2deec2c4d6da. 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/ESA012173493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf927306a7e0667bf841ec280d937cbe0a36fd0cb2608cd122d7f01c1a435a56. 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/ESA012173495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb908089a96741de2c81d1346a343949dda1ef8e50bde9c1bb13bb7e8c9123e80. 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/ESA012173496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b63dfb589d0f7617ec13be53a9a036aa26644f155589fea361a6565ab9b247a. 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/ESA012173497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8674d657458801d73d406fa72ad70ce3b05cbf2dd2286ef9f9736bed46ef852e. 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/ESA012173498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9d32222e3ded38b75590fac72a8afa731a80b03d6ebedc9cc69530408d9255. 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/ESA012173499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa85c711a25d6a03549d705e29c825f0555afc227bdcdf5346b99d907517333. 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/ESA012173500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316ddb96dea6840c2e89dbbc05e0e4ef31d8b9e79f89f6bfe11441a8d042d995. 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/ESA012173501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae993968c52f3f1d79a1b037938e0b20735139774f4d63fffba8ba3d1ca9259. 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/ESA012173502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023a75b30b9ca5b7713dea35e7d37af73c324811514b58580bc35149294f65d9. 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/ESA012173503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf554652713c565f8425016191488f7f5f0fa4f7c391e118905d37eaf6d13d9f. 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/ESA012173504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88357d923effd0ab6394647314984752ad4c2e7de7d594c46782769f666e6340. 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/ESA012173505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc2e79a2cb64f898be6d476a235f23bd5c3a52ab91e6e8d434c48cd94f52475. 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/ESA012162745.
Whispers of the Tranquil Dawn: a Zen Classical Lullaby