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 0x9abdad8c3174f0cfbc3799fcd1a0f40841e181b0a6ff4cab4486856fa5d056ee. 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/b5f93222-2a51-4e31-84a1-5dc0340e4ade.json and https://artists.proofprofile.net/proofs/artist/b5f93222-2a51-4e31-84a1-5dc0340e4ade.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 0xe7e4d5fc91b4239ee94869c60979bcc1be3d794f3626798905a3877645f3d93b. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/HEC822100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f106b80e8b468e2e40af29c998946aa4e18b9920ff548d50acfb5eeb530ce2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/HEC822100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c8a12b371d20897a5901024f01559acde1107a3653ecebe955b447b7e6c688. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/HEC822100157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9ce1ef9d44e8fd44b94b1ae4d639bc1cbaeac04a96bbfa3e622237a7798fab. 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/HEC822100158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273a735d54c2ee03185fdc73b2e01acf04c06b0762f149b6543d24492518012a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:34Z), 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/HEC822100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0df384ff9ef4e9227bbc1b2b5695b223f81b16e48ecc89ff5faa93d11c6a895. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/HEC822100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18d880e26f9e5bbe35a113d07f508b68c1c25b09b66abfefde533351ef69a53. 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/HEC822100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff74a7220b8f1b03d5cd3316fb5027d54b46d3d412e2196c05ac3353f93d594. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/HEC822100162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2a407e25c4c4fbab72ad87a7bf0c0b2b157eb3a45d1e229f0d0e06a619f9c8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/HEC822100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fe238b65bf9115aa5489aeb4b4e999679d44e02d83174ff7d614614538eaba. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/HEC822100166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548dc1fb5838e04cc27e0288270aafc03a2954251e327175829e623c3a9a8924. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:21Z), 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/HEC822100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686e96287b59c8fd2f75f571a2551075cd38b650b8713e3e1c4aaead18697efd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/HEC822100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5be1fcb43e707630773fc5aaad46e652807e6ed219cad12ea9e378f84a36170. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HEC822100170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95525f8143218521abb2f21f7eb8f096dd92688af9fce1d23644e363f68c8a44. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/HEC822100171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8970ef74518c6a8db5947c746e44b54920f3510094ef79c470529594cf2b49ef. 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/HEC822100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d0d8ded620d21f09e071f0a3492fc7b7297a2ce0f9ffc0953d0220054b0f03. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/HEC822100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fc5f343291380b8d035518edc210e024cdadcd40c0b665354db3da0f103a1d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:53:04Z), 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/HEC822100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1131c03dc291435df00a94f3e6d298a581ad88b90d918437014cd5557d26eba6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HEC822100175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a13668745174091c83345c27fb5a9849d12f28dec01fa79b7b958f93a8b9061. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HEC822100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa28f2f8c53087a5d82ca74645cc9b4bd49f3afc841e8c7a636d9cf1a560484c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HEC822100177.