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 0x31ee5cb02fe8143d881ef0a6eb7f9a12827969bab0f951b97e8d5294efaeae52. 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/f96cfc20-92de-4f4f-896c-fd705d796f28.json and https://artists.proofprofile.net/proofs/artist/f96cfc20-92de-4f4f-896c-fd705d796f28.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 0xedf0a0056465a3529ae7eea79789dd91c72a3604883cdacb3db8cdff1b19119f. 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/TCAFC2032715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd506ae473e1e78c44faf00fee63f0f2e8c5416191ad5fdb0c41efb89eac25ae3. 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/TCAFC2032733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfada4741e006121605f4eaf8e01686ae945f3310eb92d049fe575edb116858b. 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/TCAFC2032740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88e9cf1e2a1dc51dd302e248ab713376683ed89bd481854af4ec89f76339f48. 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/TCAFC2032780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689967b40cd56869d7305acb9b65da95ad25336f1672a0187c8d7d5a6c1050f3. 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/ARF109900509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadfd87ebf65f9fe0315aca206828ee93fc209bca7ac8ebe0bdecb28585bbdfe. 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/ARF100500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b81574904f63c5b53b383c111139647cc2cafe5683ea2c858b444b1ab74cfb. 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/ARF100500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8b8704ba799abe6655d2f85b4b77ecc23861f7bf4eb3c12c931d1a4d4d5739. 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/ARF100500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72b19f4bc90972e32216ca64bd3f5a270a813cbb567a0f5655bfb8fb197f6c8. 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/ARF100500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fef80f35de7695d3c8bedc70323a1a390066dcf7ba4ac5cf4659728da977255. 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/ARF100500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e794decdc1a78d39a78b7ee9870bbdac117eee954f121b2fca029edf5f8da. 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/ARFSB0700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa847a18cc1969344f09eb65347606246d42be3e3ebe76e7079a0896262426cf0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARF100500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03dbfa2f43c9f8dfb9ba391d11edc89e0cf6ea66d373d4b134574f848d32f4a. 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/ARFSB0700508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246eb1f0f79bf4ced6ed9d30fd8439aa9e190fff9bc858d4b3862e1b6fb5be4d. 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/ARFSB0700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a05e782a69c36e035db663d07e675fda1a17392967be6810d229bd15cb1435. 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/ARFSB0700505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5420981913457896fe85ce2166668d763cf579eb86d9fe9bd29c755554763bd9. 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/ARFSB0700512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b249b17bf73fdd9b0e4e8a12d2d8e3364033ac6626df2da82d964e3a60c858. 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/ARFSB0700513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea8d93d9543f9b04fafed172784170dd3264cd1ea71d79c8eee69d3e35b635d. 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/ARFSB0700514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5420981913457896fe85ce2166668d763cf579eb86d9fe9bd29c755554763bd9. 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/ARFSB0700512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b249b17bf73fdd9b0e4e8a12d2d8e3364033ac6626df2da82d964e3a60c858. 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/ARFSB0700513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea8d93d9543f9b04fafed172784170dd3264cd1ea71d79c8eee69d3e35b635d. 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/ARFSB0700514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc9b7fab601b19264027aeb42ebb8eb040504dfdb45555038f9476567503584. 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/ARF107700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1e4a20d02ddce63079dc8b024afdd272912b21da78770ff3f80c6e58cdbac7. 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/ARF107600387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03dbfa2f43c9f8dfb9ba391d11edc89e0cf6ea66d373d4b134574f848d32f4a. 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/ARFSB0700508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8b8704ba799abe6655d2f85b4b77ecc23861f7bf4eb3c12c931d1a4d4d5739. 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/ARF100500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e794decdc1a78d39a78b7ee9870bbdac117eee954f121b2fca029edf5f8da. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ARFSB0700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fef80f35de7695d3c8bedc70323a1a390066dcf7ba4ac5cf4659728da977255. 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/ARF100500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadfd87ebf65f9fe0315aca206828ee93fc209bca7ac8ebe0bdecb28585bbdfe. 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/ARF100500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72b19f4bc90972e32216ca64bd3f5a270a813cbb567a0f5655bfb8fb197f6c8. 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/ARF100500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129eebb33c66f7c52493ddeb19939976acd45d263fb89c38a91652afbbf7e711. 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/ARF100500176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa847a18cc1969344f09eb65347606246d42be3e3ebe76e7079a0896262426cf0. 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/ARF100500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604761e860aaf3e5823d4097b684eab529cd3c33b70c2aa8577ff31b0e5f3fb7. 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/ARF107500361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b81574904f63c5b53b383c111139647cc2cafe5683ea2c858b444b1ab74cfb. 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/ARF100500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689967b40cd56869d7305acb9b65da95ad25336f1672a0187c8d7d5a6c1050f3. 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/ARF109900509.