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 0xac72cf713411e316ee8f22f5a7965e0ceb6cfe4f56b9a2a42fd74fc240dc95e3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0df5da03-b5ac-4d9c-ac20-d8f9fdfe12f8.json and https://artists.proofprofile.net/proofs/artist/0df5da03-b5ac-4d9c-ac20-d8f9fdfe12f8.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 0x86b5374a02b076529270d488fdc39bcea9544ab34c7af63a0be678207fc92a43. 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/GX3Q92037435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc7930174fbcd4bdfdd4eb79a0b7c38b0e35c67a2c0ceb0e2dec72d752ff09a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US25X2200645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fea16ae9e7654bf1e2f3b262c85e7a3e00872b8ecb196eaa94554d728c719a. 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/GBVPL1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf5becc65a28017fcb269133035bb1c46949c7a61d8b82ce17424a15f17d42b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBVPL2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcea5e20c977cf46a9900f195ff970766bc029cd126bcb27c4319254d86a296. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCJY1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf086a117fee51ed5157d873469c1ba4cd62a58419f1756713398f7c2911f032b. 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/GBSV21300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05070675e80ef6dd57607b5bd5b486cc948484c193beaefc8130b1b91cda7d2b. 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/GB8KE2209766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff9246422ffaa13aaac816805bc7970e1a5ccd005ea92c3fd3b60e0f6b7a3f6. 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/US25X2302048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc7930174fbcd4bdfdd4eb79a0b7c38b0e35c67a2c0ceb0e2dec72d752ff09a. 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/US25X2200645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc90d0bec6ce71ab4d6dc7e71cb92bf87e332c118cb934219e3c4c84dcc8fc3. 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/GBVPL2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62940fc9525f35f988963343b15d50f4906cbd6462f045c9efedff3913fc44d. 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/GBVPL1900060.
Dub Pistols present Welcome To The Jungle (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d404c780a782534579c3ef5ab6f5ad62a93625da9f0ab28ab8c6a4ea7adab1. 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/GBFG92100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf6a820eb39355867d5a8a4ddf26db783f8b843b32319d3ac3fd6bdb34d578. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8KE1953809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b796ec49d550612281177ba3c97b2ffcd6192893a90dcc67ff58a58b37f7153. 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/GB8KE2051416.