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 0x1373134088703752a48a2ee85a243b29d3f90deb59b2fca5ebd0d0572d659747. 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/ae5bb344-56a3-468f-a309-ec5cc7c80169.json and https://artists.proofprofile.net/proofs/artist/ae5bb344-56a3-468f-a309-ec5cc7c80169.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 0x5efb000f2dc840edd0f1bd5ba4ad2403ce8192017c448b4c8096f6c3a39ea158. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBLFP2262115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98095f71edaf463c5be97d5543fd4d8f3706a8db8a79ab28412668659b501c9a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:49:06Z), 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/GBLFP2288104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dc58552ea58fe2f3cb7d0b162f8baf1ae36c5508efaaa5d2125202e59c572d. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/UKXN22259454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5978c4fbc63aa0bca06660f5a07318c5849a9acdcae40f72cfdd96edd7fa61e7. 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/DEUM72301288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779ecd4194077c4f3065c1f425f868ef361c6664ec8f3c7c86700073fee2d33e. 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/DEUM72301287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150baee4e1631e63ef8dcd6bb5af9fa66ae14ae570dd8b0d53c22838304ca411. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:20:17Z), 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/DEUV72300837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41923151774c52475bb4e7365dc35a5258df9715ba139cbf9f75cc2c8b771042. 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/DEUM72310898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fae0162278afddf340512a1f88bd248d11da1a80f4625c8b3e45be6e9ac1ec2. 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/DEUM72310899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d00fed85744c77427158a26b87bcca1a2598adfa8a6cf31bc7ad69a6587068c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRR642500619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc529a1ad471dd2431bf305ee4b6271cd805d358c1149419411489b94a1150e. 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/FRR642500576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98da2fcffe75dd965649cbf24fd83a67f2a18584f6744b02efc008cf7ab7873. 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/FRR642500574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0343a1790fea8a82e74352b3134482ded8f711fb432f48340e23fd5733ed33dd. 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/FRR642500620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac33e6af4932051631f528eb606ba59ea04992d8b533b6a94b4b677243818573. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZS662437145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f8154ce9e3bc3ac64143dbc31b6088f273c500cd87f17d56d5b21aac977cc1. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/FRR642500622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72ad748cbd1d87976aab2ffa7b7487f4026ea86a833b501455b554cd68e4acc. 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/FRR642500623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13a225691f52d92ce298e11b8a028d0e651d7cdfecd940ed21b0677a63333c6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:34Z), 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/QZTBF2566467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5978c4fbc63aa0bca06660f5a07318c5849a9acdcae40f72cfdd96edd7fa61e7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEUM72301288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779ecd4194077c4f3065c1f425f868ef361c6664ec8f3c7c86700073fee2d33e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEUM72301287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac33e6af4932051631f528eb606ba59ea04992d8b533b6a94b4b677243818573. 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/QZS662437145.