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 0x26a48b0090dc3021a7ccd5a0818cc3274838710da8c9f411aeb5a32f5419ef1f. 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/0544ff42-79b1-4fda-85e0-65ee51718286.json and https://artists.proofprofile.net/proofs/artist/0544ff42-79b1-4fda-85e0-65ee51718286.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 0x9ea5a946c0e29204bf337a853fa809a1efb1c7db8ae1c2f46a2f3498e27b0c41. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM80776274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe575c40a09ca89647d3c80024e5c40bb9359d26d216c270cc5deb676dcf6797d. 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/USHM80776279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cef00c04cb8f5c6654dff9c763b276c952be9e8ecf794afa0ffe85d90d04e9. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USCGH1605689.
Lord, When You Came / Pescador De Hombres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b062fa644cd1c290f1e1dc3b19f2f3088a4bfabde21e89ff92d6870d2943646. 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/USCGH1605692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc19d3b02b85f704ddac0c39fc9b9a003e0b3fa832ef8c8afc5fc15e188a630. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM9A91615187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f75531eb541ceb7c00f0e49a78684364185c925191ec6d3bd63127b93440286. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM9A91615196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3f537dac50e569e536007685fdd4c03a559e5e8b0448b0aa3599e2238d15c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM9A91615197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6fc5b5c21a3b3444a4096f54c4e1cef3b5e18f4a1c9190d07755b059887458. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM9A91615199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97fbcae739260aa79c33aebf64c20d848298c7f82fffe193141dc51ad4590c4. 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/USL4Q0846112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bcd257f8a19351a4a4aed1206076da4a668dac949dd68dea65dfa60e7412c0. 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/USL4Q0846113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9aeae6f52629e3fc5eb9b3a80bd03a50b0c230ee4b1b25657b4c63e14236c88. 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/USL4Q0846114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bcaa94708a6d349d850e2acfca4a5707a700d8f4947ef983a1b5a07fd92b5e. 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/USL4Q0846115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcd86911d105c047644897144f002eaf13231c68a2f6a44bd4f4befa94ae6b0. 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/USL4Q0846116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa085b0a413f10177761d88b8f0e7785b5fdc2bcdc2a07ae2168fe7d9ead94e. 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/USL4Q0846117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1347e0bcaf6565aa5877aaf07f292a40ca9349e142c3b17985ef0f35d07bab9e. 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/USL4Q0846118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a8d7e4d229100c177a85ade68d7a63f33694d810459b2a943af7606147c534. 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/USL4Q0846119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f074cb9573f9ea8cf9ad2fda6af02693d445dc1946eac7c5170eef5e5bee0a. 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/USL4Q0846120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27c63f062b8a29fb2a69e50267625cc01dc12f8be9edda6e4ba0d2ac37d839b. 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/USL4Q0846121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724f195d0cc396e27ef50ceb19e4bf9246cc5a83557726b83ef2c289b8d88e03. 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/USL4Q0846122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3bb4b0d542d8bcf42b46036b75148bacc019c2998a29efb87336ec2e25720f. 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/USL4Q0846123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc737326bf771fcb6235efe7c704959c0b39aebf89205e35f33b843e0545203b0. 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/USL4Q0846124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff6219d567705b0c7148ed72bf291dc547daabf7e0818f15fe04bfa08798b00. 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/USL4Q0846125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54765643de1a0e8a84ae867deb7c3e264219be8af6fe682e7e8e53c7d1548093. 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/USL4Q0846126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fa6923d6616dedc63355b2a06679b0174d6de679dbae9c86c6e25864c2c87a. 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/USL4Q0846127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615e7ba73de06c23352416384005385a2ed25b305d915a8031f19e0720b47dce. 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/USL4Q0846128.