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 0x150190699f4aae314520b9e78416a01e19db447674a7b0104756781bb13427b0. 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/fe7ebf8d-ef82-4e4a-a68b-a8c93dd028b1.json and https://artists.proofprofile.net/proofs/artist/fe7ebf8d-ef82-4e4a-a68b-a8c93dd028b1.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 0x06db37318271e9de297e453c090be2564d000386b58ca84505f3aa2dd3f0481c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGJ0722187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51db6af66140cb7ba25bc6a65d314906ce86064755fdb20ae517dcfb920642c8. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USL4Q0817504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb557cc8ae2074a28bc3e8d4bbc26e68e744cd5aa91955bceea88cfaaaacd1c. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:37:53Z), 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/USL4Q0817505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e31fb04b94a53432bbf1a9eaf3eb5d1e68aee73d1adf9d85a933ecd61666e0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USL4Q0817506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3758c4013c1a09eb9b289e9a1d0550e0c959b194661d4796e39eb7824e126ec0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:52Z), 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/USL4Q0817507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5ab2083ca3489568c9b1d7eefde9cc2c4a7938d4135c0a3fe31f0c8806dbae. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CA5721900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75405dc8c23da1578967b4dd69d2f9b94f3fca4d322b3a1ea28a7f5b1115bb9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CA5721900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8446a317c4fde2b242941beb0459fdc36e0b8fd9926d562cc46f985eeb2e6f63. 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/CA5721900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bdd1ed9d674f63f68fcc17c72c149da5bd9467998a194b9fb61f6c23aa28ea. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CA5721600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0682df290380c18cd515ada2be89c5caaedbc9f266dcb9a9f89731deb887dd1. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/CA5721600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac00be54f326b7c8ca26b7a7b4a2814c8872914fdd2930dd596f269b009c30b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CA5721600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a34ca1c6565fa56ec2130b3c179bac06ef76f192db2535ae79f9dff10f8a03. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/CA5721600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5ac299dbbdbdac50ac1b08d9b562dfca94277fe6e55c8554c8b05233104bb1. 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/CA5722100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94f9e74ce197359bf2b9acba3a40d629f570a1f5807f91c8bd15b89c1e5bf30. 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/CA5722100009.
Pavan Guru Pani Pita (Creation & Surrender)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6ec9f66e4d808d16198356c7adc4c4af3f047aae21cea2771a0ab850d08632. 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/CA5722300008.
Toon Mera Pita Toonhai Mera Mata (Divine Protection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab667711e26b4676012073e60ed74c3d3b9eeb938140bdf672ce5993e51de70. 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/USCCW1611232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b48091be398e7102f24bdcbd419608f3e44d3089de44b4361b04ac7564eb1cf. 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/USCCW1611139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb3e02df6c3f35cdcbc762c67dd9df3a333fab74d3bb27695f49b209e6729c7. 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/USCCW1611074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3085098e5acd0abbbdbfaa5916a81c7cfdeca287a796c76e029ded1adcf4873. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CA5721600001.
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 0x172d30a83d0e3ce522fd3e5546b46419b8e207b8f0e88310aa5c7b8fea53386c. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/USCCW1611140.