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 0xed71c5b3cc0f267d75c8a946a0bb115f3b5cf4ecc113c6430553c9bb96c76ef9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/852895c6-106d-41a1-abad-97727838b82e.json and https://artists.proofprofile.net/proofs/artist/852895c6-106d-41a1-abad-97727838b82e.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 0xc45031dce2a67b34a474460bf884978abed547cc95445c3ad16269b3519e2ddd. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:21:53Z), 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/JPWP01271712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0b769f4180dfd27d01b0202f52ad650e894c3fd0493e603f998c54916cedef. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPWP01271721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9233297af9866712445af4b6cc296b938979b7182135d4d9d3c692a83fe8459d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPWP01271713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd2381bbe228ba1f09d02023f746471ef53b3cd3ed27986186d49be46d63760. 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/JPWP01271724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06142a9e64cdf2b89713fc0968ee15b62edaff036e1521ef5e14431d5aadfe91. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/JPWP01271716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a6dad9d72cf98a52921e3db3a8693be6197070b49b19238781607c49cc0217. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPWP01271722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd389778e585be5ad7d55f1d1254620330da224049518b5c78765e87642f1a9. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:54:33Z), 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/JPWP01271715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ff37f1c3e10620401b8e73671c369911174b84143ff808b95734813d1adabd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPWP01271719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210a2d358523e64e2958046b1b1eded5783aa1c9eeab4482765bf851b7e7d3a4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPWP01271711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45031dce2a67b34a474460bf884978abed547cc95445c3ad16269b3519e2ddd. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:01:08Z), 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/JPWP01271712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dda431a2d7700c038dfb31cc9e8f9a7b375efaa0e3048e6c1f7525b77cf2a03. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPWP01271717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e1e4d1697c8a1dc3122c43be17f0a57499114d0f02abd098d452a77f00567a. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPWP01271720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e3c0b1143236b0c6e325b03ea93e46f9847b45fe4761bd9b210474dc98389e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPWP01271714.
Hilight (feat. 5lack) [Extended Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc819aa922f47fed84329ea439b25c5822e8c2cbee288368775bbb81a4b5a7e2d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPWP01671262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ec2716e65b1c8fc494cea18a6ee4a3880894a99f4be9611ad8efb735bc9eb5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:13Z), 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/JPWP01671263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226fafe1080581a2995371321351a86eb7d8de580c2e54e5b194cbbf5a63ac84. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:38Z), 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/JPWP01671265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac650fdaba62b6624b9cb42148f0bf5690d5d6ca317fbe12712550445a12d881. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/JPWP01671266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79db1fffa5ed97998ffb4a5d55ab3e1b0a6d6eb02a4a08c5a0b8b101aeb0f599. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:41Z), 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/JPWP01671268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070ec43366f5e555a0a150b8ad66f39d800a29280614fdb1d8e1d49a3186c99. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPWP01671267.