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 0x6d1f459429cec67bf834b2b85fca9c62318983005e28eb93b76f267fd0fbc800. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a27b4d62-641b-4e65-81af-0805261354f3.json and https://artists.proofprofile.net/proofs/artist/a27b4d62-641b-4e65-81af-0805261354f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Not Just Echoes or Smalltalk (Alt. Version)
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 0xb267a8d6266293701997249540808a3738c74f3052ccec2030dd28ef0ae63683. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DKWQ22000101.
With the Dim the Darkness Came (Live 21)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d9f519ec50813b236b780254589a87ddefd680eaa02321cc609ad40d2f4c3c. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DKWQ22200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89756726eae624a39b8d840f7f14ce04403ef543529fb3c158c9b9dea23326c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DKWQ22300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f636c51c91cf051504eb2f7fed57a166f0072ef9bd2bfd243e1ee9134a23926. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/DKWQ22300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f05a5afef147f2aeb0b4061aa91c21a026fe0aa1b8e2784932e0fe8623d215. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DKWQ22300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3566daf91e99d9b4b4295db81573c161659ae0975f7e0292fd2fa9972b24a638. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DKWQ22400807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edcdb2b9538e44a111b127abd455bfe33634b483791212d8c4723449d03909e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DKWQ22400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6d6d8915336b950b8a3d046197c8f88e08f61c07c0a7ae8dac86cc404d9eff. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DKWQ22400805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992861973e23cf55ca806408bce67818e2110561429df944ae9a14aca1be5429. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DKWQ22400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d168355888617ed43d138815a763017c699a7bc0d0864b2a1b5e6642c64d9a. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:41:37Z), 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/DKWQ22400802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa909aef011b9e6e9a893b23d14d80fc4550a4c31d19ae92ff91491dbbb2a7c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:07Z), 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/DKWQ22400803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edcdb2b9538e44a111b127abd455bfe33634b483791212d8c4723449d03909e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DKWQ22400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96af0afb96daa55da8525eed68259602c5668a81a7668d7148cca1923ad9855. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DKWQ22400806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3566daf91e99d9b4b4295db81573c161659ae0975f7e0292fd2fa9972b24a638. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DKWQ22400807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401fe08d7d4f128123fc87a51ad0c70a506c6eb955b13f451366f5d40005397c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DKWQ22400808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25a0a5f24552046dfdbf6a67c44014f97eb7fb129bae24b66cc5460dbf4eac4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DKWQ22400809.