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 0x1a75bd819dcde95d0717d17f2f949d14bf6952f705bdec1ce053184a982fb428. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47a2c51b-1398-418d-bcc5-b39636b5b242.json and https://artists.proofprofile.net/proofs/artist/47a2c51b-1398-418d-bcc5-b39636b5b242.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 0x72890c92105f41f6c120483266f51a28513afd710f1e099def25478a2672b80d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFL2316876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd474f68923c5e7a421712abacc7b9b849d38d0878f36549816ec46b5558e95eb. 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/QZN882428810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cd8abc810240269c1ebd4b792f86a3d7d85c3dbe35c57f6d44917e39b96908. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWDW2484236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc37478c191d4b79bf44177ed125003bf2a94eecda74f23a61fb4e19d3e23aab. 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/QZN882428811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237977e3001c8f6c470944d5f315ee3849841be5966128c7d0b1eb38274b5e0f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZN882428812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc600aa69ec8679019630ed13d9ee20adcf26b658bd781f1d92c8f68b547da3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZN882428813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59213ddcbdd15288c8e2c0a7097eb693828a7dccb8baea1c0e0078d8dbdee14c. 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/QZN882428815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb0613e31c4bd3d1be866a97f9f1cbae5ff133d77718aacca5dd499ae411908. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZN882406731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cd8abc810240269c1ebd4b792f86a3d7d85c3dbe35c57f6d44917e39b96908. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZWDW2484236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5b0150f642254be9e8cf2cdea265fcf17d8d562fd9898406613bbce9bf2c61. 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/ZA40S2500590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2631918c212a5695dba1f9794005cc958d4e57e1dbacc866d9b840c23524dbb. 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/QZWDW2430899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969de54b687cacd8ca4db03330b093c11e402775204417f6f04d9104f48968cc. 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/QZYFZ2501409.
Autumn In Jazz (feat. Wesley Keys, Safe Sax & Swiss World)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34abd62d609a70eecc598130b0acd1887924ccc4f50584a05c7758f7d0048073. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ZA56E2420542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ed751aaf334d71208b3dca4bbaf4971a8b76795a4041f1c2cb126bdfd51691. 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/SE6XX2347657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab7765010c17bbdbc668b9105a4419dd0acb5595b6a15f3dd1a568962a8401. 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/ZA41S2300252.