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 0xb48738d4204b9307e26238583224459cdb8d3802d77c5774854320c89e1c904e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9da904e3-b6f4-417b-9534-67dc639d5bee.json and https://artists.proofprofile.net/proofs/artist/9da904e3-b6f4-417b-9534-67dc639d5bee.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 0xc126a4966cdeb459c17acc3920fc02171e6d06861dfdbdfbc18d0e239d10146e. 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/QZGLS2083568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f7c8663bcfab1d28a70221291ae956c9ea7fa22525bccb525900389ccde332. 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/QZGLS2083570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691564caa5cb5a459ef4038904de97e386354dadaf296c12af4a36f6697713f1. 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/QZGLS2083571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495dc950d514b0f31f85395f3331ef9782449f546300ede229da45c8463fd33b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:10:51Z), 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/QZGLS2083572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ae6113e30a7736aaa8c7c0018afe499b1df2cf6a6ab0b8a36b5d3b4b5843a6. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZGLS2083573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c224ace217de9a9c03dc667f847b76fe565fc443a9e69a6c9db4561c0c3838. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZGLS2083575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86965e886428fdf6f900d236b042098efb1f3bbd163e15ed6409e3aa2e99848a. 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/QZGLS2083576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aedd21f76a1cabf010abd9c36e8ab7f6af327637c1f16952cb8d55e119ebfaf. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:39Z), 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/QZGLS2083578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff1a25eca2d08e3748227fe3c35d8e0de04d508db56a3e462515916e0cfecd9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZGLS2083579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cbf3017d2f7128d3043444b299a41f058006a84a180c727838e7169ddddc78. 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/QZNJX2290345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b6ad8a6b646ceed1cfd18dab4b0cae0ed7ec72d85a5268773aadaa6c6852d. 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/QZNJX2378466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e4909365e03687478b848c009e9a273d98a34ec1be5f8476450fe4f26ba2dd. 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/QZW9K2393951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a880a75d543402530acfa66fea0d9ad6d800efdf928c1cae6c3dbcd265dc33. 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/QZW9L2336766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c9449f5a09cca0044bce48acfe63830b41e001ffdf91bf63f87043ef7486cc. 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/QZTPX2314241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafdde6b6fefaff4076097d0ceb6360f7f4f237277c4b626d6fd55b272f3b87a. 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/QZTPX2335281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b6ad8a6b646ceed1cfd18dab4b0cae0ed7ec72d85a5268773aadaa6c6852d. 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/QZNJX2378466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392c8291bf1610a1112399d01fca833868cfa5a7bbe6626e0dd3dfc50a958650. 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/QZTPX2350704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589dfce0991922f2b261379c70bcc1890a142cb9bfbabcf080ed2c826e9112d6. 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/QZW9K2393978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e4909365e03687478b848c009e9a273d98a34ec1be5f8476450fe4f26ba2dd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZW9K2393951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a880a75d543402530acfa66fea0d9ad6d800efdf928c1cae6c3dbcd265dc33. 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/QZW9L2336766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca4f2fe8f2375fb8aa0e30614c2a4649043d206b1e339d9b3dc443bd49568b0. 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/QZW9L2342947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b9d64c5dd79389f58e86301431bbcf53bdd9b45cf4088345b7c8d05a8a189d. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZTPX2556662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74d95f4681f8bfd8f9e8b86bf6adc36e26d9b610f49a4d12ac8fae7fc7645a6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZGLM2514864.