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 0xc00f6cebf4b5be8792a6207a2c9f6625a6de3d11046b3fd77360aa727c3a713f. 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/c73714f0-06ae-4cfa-b885-140bf823fa8c.json and https://artists.proofprofile.net/proofs/artist/c73714f0-06ae-4cfa-b885-140bf823fa8c.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 0xea7044a462ae9572c4c88a7f35dc043d68143338ea15db6adbfcd37371f52acd. 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/FR10S1897934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56487a2ed0f7e09bdeb1614762a1a09e418d594ac3d314ebcf5121741834d11a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:24Z), 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/GBSMU7421067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22eb9a533250633a1d3b9f56ce0464d7a4f1f6e86dd5bb9242f3f3603430061. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:35Z), 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/GBSMU7421070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf40568c48ee939823b21e8514a228750aa640c529188bd1d282dea91d0ea6b4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU7729150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc13ecd2e73e90bc3f095265d4b135bffc569f0c1063e3e27945a1973e072c20. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QM4TX1740971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3da1055db1dfca349370da3acfc3e99057ee07e7169387f172267d8c770ce00. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBSMU7729159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505ab4b3b7d61f6ed5a7e6ffb52b911e57ed72bdeab3f2296119851e7358db93. 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/ES71G1849158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6ae493345df078c01147b20fdc074a5e8804c0f2686fc642d38b4df60f873f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES71G1849159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0aeae5df66ab702b27ac917d3ff15771c23c97020262e9929ed5af97a81f126. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES71G1849165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e84912204b9ae18f1565facd1e433b043d0543519ef97052a3502a4648e7215. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBSMU7421361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94acdd547d3753f44f1bc537752cd73664dcdf27d3d2e2eced9d52e22145fee1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S1897943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69321a587277732e3d8427491d1f53fc408891c74bf9f9e44642826c22a532f8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBSMU7421363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee2dabe4ede48fdd8d271260d254e5e2b0643063785b68ea4f88472cbe112f8. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FR10S1897936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2386cdc56a516ede7bf28069a002331d581b9aae83b051db31a38b7a261da423. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S1875682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cce7e4519e6d328306d44b687ce6e35989535814d565094f6d15f532956d5b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBSMU7421565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeefc9ddd14bc56ff673755d8b5d2809df411df215b57d124cb8443f5b811d81. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:33:21Z), 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/GBSMU7421568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81d93db7a908a91ba9e07018b510f8a45f553b6916669c886c7f34a18a85f7d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBSMU7421569.