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 0xe49c82d567e72841fa0a53ecfb760e7882ea1764e584ed971e77347b3ea40788. 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/0e599d90-41c5-4e4f-98ab-3fbd9814b4ce.json and https://artists.proofprofile.net/proofs/artist/0e599d90-41c5-4e4f-98ab-3fbd9814b4ce.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 0x7207bd58d34f44dbade7de6d59693b1e4ec079e6e0eab52fd3caeaa8a60c2739. 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/GX4R52240076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c03f29a848ad75b971b0ceca725236ad5230e23d75cfd81ee08a9da8f02504. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX4R52240078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2235f5add62491c25e8d9806892a77c4d1f48b67b34a5fc1c46124cbb1d84abc. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GX4R52240080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36741df3978daa7c71550b8b0ea297f6d91ad36cc9474b4f02b0e389bdaf9493. 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/GX4R52240088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b4cd0455362d972e4e896f5e2105a26893b1a664d1565d176d0f93828a0e9d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GX4R52240079.
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 0xe114a889fb180463662d025a6945b0e8b500c83ca8ff2c1bc7c7971c963b6662. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GX4R52240136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a8d9d3e79fb84db34d37947cdfb9e4a4960d7d953f29086cf56b27c6883116. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GX4R52240138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c5e4be446894a1c8ada8d0145378dfa3eefd0dcda44f7a19dcfa667a07b50a. 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/GBSMU7434215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedea5af51fecc556ef5ae4e2087baafb7a0f454975e2e0313eb9cd7d838f123e. 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/GBSMU7434216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e052cd1e2543a24baa7052d4fce9765ee1d5040f904435a2e442c04d2499eb. 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/GBSMU7434217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279965182a973c22f067f366696f1cbe2d536e8993150cd6af51d159393b01d6. 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/GBSMU7434219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c7c245a48348fb865eedaac49f3e2c48c6e481c76ac3ce34f5a801617468eb. 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/GBSMU7434221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66763182cd3cd226b9adc19ebce458c803e6c6ca2f8d97f4a05df0877909665e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBSMU7434218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3245966cb31d94de12d6a70268ac940ed3da9fdb4c2e2abb211c8b25098f75. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBSMU7434220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13246177d729e20d18e583babeee8360c307365c245348b6cf554884126c2141. 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/USA2P2442830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ae919e5aa7be1d7339f9ba37f784359da6ae7e1680d5307bf6b24618ec3500. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX8LE2470090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59d90295032a07d545cf63601d9831435d6b9c5be290daadf602594faf9e50c. 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/QZMHL2465850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3ce2cf5fc2aec1bac5f14a385ef04fd96570869530317d4b4592e4bc86748d. 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/QZHN52463553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f6103ad54e156daaf64746837e365f2d295942ffeef35dee6b035b121ca764. 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/GX89G2441078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a3f5a8dd356aee4f2f7e35b34a880bdb6e9dcfcc81ea9532ff1c37d68cf507. 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/QZMHL2399906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cd1dd2cda9e5bf0fdf4ef04f2f206244afaafbec52820cb02ad9d5ec2a9601. 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/GX8KD2350110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43233ffe679108e49e188b101b80d7892f53f789509aa279a3a909d9b911cc4. 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/GX8KD2277870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87decd6de14d70b6d61a7ceab810a4f9c24b28bce017a4ab414be98307f49e6d. 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/GX8KD2277878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7cfa488021c1b4f2f31d0ea31f0b5a71a85a096c159cd1e3cb5a50b4108d94. 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/DEAS82000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9bba13f350f799f630de7072bf283ce89cd7518a0d78896ebd46cbc65caaca. 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/QZS652291780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042a322a692bc83a4b2ddcd64e057da3d32f921c44d121a48016c21d3813692c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZKDK2266388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c0f10a6c3d2ac2862a3773d6e98d521f189856a0b429d50d850efe1f4f68f3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX5MX2182952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64917c806dd136077f9488b186ecee35b2c18adb0c5be091b53baaf3c2418551. 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/USA2P2117917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a273db293e1346bd92ac775bcfd2a3be30093694d10ac59adaa7a16488f8be. 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/QZDA52130853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f2b708def39306f6d6265819bedcaa1b99162f848179c2c479c5514b680048. 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/GBSMU9361791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9aa9be719e3aa5864afe7f217a302dc830b92c0c36e343ca1b15e5b3e7f123. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBSMU8070885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08e72b2a377f8e9112138cf6301f2d8ab1436794edde952662b35d5233ddabf. 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/GBSMU8113127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11726be6487cd6d7c735e06f6b53db016c207de4ce7aaa4d724b5535a00093a. 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/GBSMU7684954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ed8d63ad29704bdf45de0ae896057079cdbddf15d1a4ba248b607009fdab5c. 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/GBWUL2051369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7afa599e758632c97ff5688ca35eb4a7e1f376f79afc6ddc60b9c856b3adb1. 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/GBSMU7032322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b65f02a559b3cbef30ef0b3ebd9eb83c3273cf37e7201beb5fb949a0e4b75c8. 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/GBSMU6179605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b65eb2ae8f2ae7593e1ae84acc1fa8ad28ff609858f8361bf040a3889cadb88. 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/GBSMU6026689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc281dbe186f98e9aa05df6e0b743feff5bb28532138b735d937e0aff535255b3. 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/GBSMU6026690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4c5e2c93a8efe1bfe0eeff2a56079bbe8cfe3d6dfa13629a875bfa9d00a33e. 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/GBSMU6026691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaccca5f8e5b44d1673e2390d4269dac217a3f8220f86c3efc28dffb46709d96. 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/GBSMU6026794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda39a7cad0470d297b602464e93b4ff528056d2c033d931bf93dd12ca0c6671b. 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/QMWZB1810060.