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 0xc51e7cddf8f85892e8a2b002f98d93e0951e066182874d2a097dd8c13c929935. 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/c4794bcc-3268-431a-9c7e-7939c1a89521.json and https://artists.proofprofile.net/proofs/artist/c4794bcc-3268-431a-9c7e-7939c1a89521.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 0x377b22a619aba14896e5875176074acfaefcc506b0fa6b6e7b6ee0d8aae02a5b. 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/US23A1568850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1532840d984ca82e86476a6e5fef5dc8b90bf9b7d86b047349a0faf85bdabd46. 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/US23A1568851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f7cac5f96437235e285c34fc3e8f4d5c6b76cfb3c7fb19a6978155d244b8c3. 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/US23A1568852.
Dream A Little Dream Of Me - White Noise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dafd1b485af4cb6d12e2aec10f1857ceac921cd377a98391be478999069b55c. 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/US23A1568853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb02d657388e86244cbccaf3a267419ea5275e4133f355c03c34fd02f4b7051. 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/US23A1568854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0278c8bf719ef461108f9fa4d9839a1b1b00d34a971367488da60a5a1a1d2b8b. 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/US23A1568855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b61de1de6de34af9e5b6c1145d40210ffec223525e1a1ac94f1cada7b695f9. 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/US23A1568856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45171f25d6939dd3951b6162483d6f63982b839cac2c0283cd0c49791e31f63. 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/US23A1568857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83c916f07b65427117e4b83a2aa25231430997c0cf7245dfde528dd1e3f8c24. 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/US23A1568858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdad52aadd1611829623cc4ba3842927d5e56bcd49dcc97e24171c024437cb95. 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/US23A1568859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c20364fb81365b4099324ee2d8a5f3ddbdc2133598b6721b3ec96a35c7c0af5. 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/US23A1567857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef11413807dfef4da826a94c607da89cac9eeef45f52b4165b6c3226fd532ed. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US23A1567858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3893105fb10376b2bc64f6fc74e45dcc4dc92e92981675b7438c90475a16dc20. 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/US23A1567859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858f0a6db9945f36b7d2f9f9ff00d56b6758c4598658f92f072b7dfc989726a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:23:59Z), 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/US23A1567860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a55ad4b6629401bdeb61e918f6020470a8949f63ca54e453ae813e8c357992. 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/US23A1567863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12de8bbada51488577821cc6896237989e74ea3ee76ba47e72bb4b23de1e3ce0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US23A1567861.
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 0x3b2fef3f1a16580c7e597666b40e32ce12eb01ca851be8a5cf4dd43278e048ce. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US23A1567862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d07b48c595f428b27b1913462ff5ef8ed8bc4bdff737950566e468dd02b77e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US23A1567864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67fd0b1ba03f954480f77c8fe9ce246dd2b4639343ab7ca7167ba3d271dcdc4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US23A1567865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb4cb10c871802e89ce4da7d672fae2e7d76b759b0f29a37fe3b65374a6353b. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/US23A1567866.