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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 0x74929c56e3addca0d4d889919177eb7fea115dc24098356b54f36e5c923341b8. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5ef078e-9e9b-4578-88be-009cda41aace.json and https://artists.proofprofile.net/proofs/artist/d5ef078e-9e9b-4578-88be-009cda41aace.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 0x0218e4680ea5153594c1aa11e3edb32824e0bfe6069bb7c8c48180567fa59f72. 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/JPP561100695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba308c527dc20a694789e6226b611428701c556c479155140cb999c22fc73272. 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/JPP561100696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d80d96b928fd8243906f25247f718e2aa661b845cdcf3d21195efbf8c2aa146. 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/JPP561100697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112a7e6e6a7f2e49bc055cea00f499776e57e3e84bbd7c8b32fd4250f839b3b5. 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/JPP561100698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967061a9ea6716e3cc23cfcf16ddc94d2392417f9719d3dd2c285fbca6dbcc6d. 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/JPP561100700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1892e0da686a4a664b638476c8b06826cd562f8c15a1a65fb5842826c7be03. 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/JPP561100704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6953b02bc855d7a6eac42a6295b921c6b746027d1ab7c749d967a204f2f048a0. 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/JPP561100706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e0d2e9066ae2dad7358a572bfe4c0125edddc8ad6386f2b7b0f486670f44b6. 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/JPP561100707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae5d28d376c4a7139ff9cf4b4cab3d351c15435b7ab227db701d2ab31b511ac. 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/JPP561100714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8025f36648cc13962510dffa38177ec733e684efe8696335b39b25bb7559d76. 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/JPP561100717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaede07b053696222ed78595427047f3152b9927d1faa1ebc6760ba203c8b33b. 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/JPP561100718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b2c9b18ccdad3bab703a944476249de99d24a6c860b4cb238fc75cfc32026b. 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/JPP561100720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd760a64fa63e95988a7d612b2a28bf1fe53cb7ce61bcd10ff739d3afc3feef. 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/JPP561100721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32830ec408bfb04fddb61d48d660c08f07e631678e32acc2f433b2bd0e5e801. 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/JPP561100722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5953bb73f8d949a9c2cd0f0e411895e2b7119e0e45b056757f388ef4daebb71. 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/JPP561100458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe928e40a904a713efe6ba42433129eea24a8d1d733ed253c55aa95af39cd216b. 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/JPP561100459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1734ca1e4f8dea71912194a57e39db2ba497143a700e455d1fd3f5ff75d2194. 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/JPP561100463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7b859d1da7655ecacec15817f114b59c855b3c18f8503e6e3207aaec39cef4. 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/JPP561100464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cb6145bca4f6a7890492142509ada49a0f046a7e70ff625c5c4a2815e0c199. 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/JPP561100465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c1bcbc3bc6e20b9859ded67fbac898142a6c133aaa790a14dc57eae395759f. 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/JPP561100466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b725b6432bf1671614310a08eb12607461f57ca618408033d6cf571d3f8474c. 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/JPP561100468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07528e06a2a42907749010c13c058f1d7fad1ea9378e758561d3e2c07d3c57e. 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/JPP561100399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85f3ece440541b5d7da3c6b87612a40e5e4aaecd0a29543cf32deef99d950a8. 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/JPP561100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc30ac346c1cd7a03845376f810d7976380892c796fa246840b5672d693a591. 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/JPP561100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975d6ba0a35972ba521b539bcfaf6ba67044c8ad99c994de0ea60da8ad9718be. 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/JPP561100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a901d01d5094e62d963f55df18d04643bf601d71c3c9d5a3d8fcce356a9523. 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/JPP561100406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b10a3f64dd06cda675461bdb722448e135d1c0060a4db81ea418404b50a26cb. 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/JPP561101364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6465a5df9cccebafe8054132cc9c7f5a6450750c17e59415bd47cc778b0c3a0f. 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/JPP561100635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb217092f92a725cce0e9659454e8456d2b0455fc5bf1d44baa5ecb0c7ce0daca. 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/JPP561100640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c05d87f0f628e4a0d33b6ac07124d9fc8cbd7ff817a10f04fb08fa3d9a4c2e. 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/TCJPO2150966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6794d0dff46add754ab11f291ae653a7d9f4e91603a7361ae7c2770767b378d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCJPO2150967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb29931ce66f8bd4eb718a0d3513469d41e37e9f11b3d9b516bc8c74e41ade9. 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/TCJPO2150968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba32aa85ecc2e215f4defbd844517556ded968ea091f4de477f8076fec2190e. 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/TCJPO2150969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc2cde4e8abc33c0a516b044016bca452674d89ea0a8bca79a0055d61ba1c10. 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/TCJPO2150972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959d0c2a8a2926dee8a7fc954e1a5c900cf72df4e032403708b54d0f32ba83f4. 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/TCJPO2150973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4ae1f89cf5faeaaa51e8fdf096459b8c5fca2e735bad174ddd4c3cf8d29b94. 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/TCJPO2150974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9145377cfccf2e222eb487934064d76500a1a34bd2857f081226271dcf9e822a. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:33:48Z), 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/JPW561804472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f52802fc89646b00a7d1f64250cd8bbf4cf9ccc8bd46e43412739eaa66b9290. 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/JPW561804475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b092bf3f30e57421aa8723e72df57668cfdf3701cd4a4a0bf0b965482e8e0c. 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/JPP561100626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73fb91e5d568cb39ec517e8be1c8865b77a64bd6fc4a56e4cc7310534fc394c. 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/TCJPL2071581.