1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcb9b9fee31bf45419ce8fd80dee16da02279b4cca9163dd365d752756b94dbf5. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b69d6d48-b8e4-472c-974e-6be64d3daac3.json and https://artists.proofprofile.net/proofs/artist/b69d6d48-b8e4-472c-974e-6be64d3daac3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Running Out of Time (Retroarchives Edition)
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 → block OTSBitcoinBlock must exist at that height 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 0xdb9fcd7b78bb3dbdd3adfd0b78a110ff031b36d0c1f5787207b53ff1fc709b58. 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/USCGJ1215186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88b8c91525b9381fe93ff9e041f9e4c03b701e6f38bb5b43da49fad424537ff. 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/USCGJ1215187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81df478e7011e43d15fc7fe400872ffae19be4b74981a63272292afa5172c9cf. 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/USCGJ1215188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20430a55cd26f178e3a36c45af99c851822e37af7c85ee6a2688f2e605f85e1. 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/USCGJ1215191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6e92af9a519d9074a2bd84c334828fae9aafa81150a7c1c92399ba00f360be. 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/USCGJ1215192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa643f402e375502b508bf48188338c6e1a2519abc4a651f99d2c38f75b097ffd. 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/USCGJ1215193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29e5c3c85ab5fbfa3ea9483170eb72251c1a62978dbdbdcfc926a02eb513caf. 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/USCGJ1215195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e490a243e883188cb3b9c69dfccf6431f84c908f5044a96bdd8cc17cf006518. 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/USCGJ1215065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e4a407cf1b57c56b1f76a2f6464923448de55170a7d1883c9b909e5fb8381b. 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/USCGJ1215070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b82a966bea65245f2a36c2a7bfcb9bd89fe1d6e22d9a196e2e5fa06fe1719e. 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/USCGJ1215072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0308c90601c90d0b01d37804e907c3f59105bd83d75926bd08b3cbf5641f6d59. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGH1057954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ce72d47abae2ace06ebddbe86b177f2e4e38562d68cfe38ed39d11ef52d2ac. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGH1057955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaf8b6d585997e0284bb8c005b3c2af5880c3f3f7710199a4a18257dab8b5ee. 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/USCGH1057957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc40a2e1c36f947d6cb4edb04ac7e7cf593e3fd1f3880e89311d7b5523da32cc. 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/USCGH1057958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa217d8002800bcf998614c6ae5dc3d74db78c978c4e73853cb3f913d275c5443. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USCGH1057959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97d904a7def895c612996a9842c99589c65586634dd6010c4b80f54c1a5d069. 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/USCGH1057962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46fa9fb994d8654a2abe35f360f3678217c1fbc77b6c2d5380d89b62cbdc4db. 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/USCGH1057965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5621dc702556ec38d19e8ba99c0ef8d9452dce96411048e49bca549934eb4380. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USHM20630602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3010161468c693d8194ca759baa3e7f47a01a9c0c5ecc81f9d293d824e9ba886. 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/USHM20630603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa4c3d65f4c63786cb1fd0d1f72fb1dc420bc665b2477b93e27301ac7218589. 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/USHM20630604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f9228affd75b3aef83b368c2abe98d9f1fd0a023f2c27dfa9cd8070f4093ec. 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/USHM20630607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056b5babea3c50dd65cad401e2189a8e66916572711bbb625adc9bf5621db1d6. 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/USHM20630609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a13b98723775c92e3ba2e431b98934447bde742189a804553f6c97794be8fa. 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/USHM20630610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe973d23efdc7def2d60e49731d052bb6fa4254058c123117b94d700d44243cfd. 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/USHM20631783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6488e9a58fc2ee0d4e0b4db8bcfc20f703b99d06c25a4fbc3eda83c59113ea6e. 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/USHM20631784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b73c06b2c83df358e7f73e450c91248bac08fe70b9174f387343708b2644079. 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/USHM20631785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a80928aa1b269d5080bfed8334d8056875ad3742ef81caed581ef3c21ed945f. 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/USHM20631786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f4ae953a10c9e97ffa51723cbe3238d7ecad801fcd7c0fab7c0a961300a064. 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/USHM20631787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d72debccd7965cc92c762d88f24d6bd3e5a17822cd5acaca9598c074df13572. 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/USHM20631791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a22199aae819140bcdda824b9eeb3f0a35f90ea6e762238cd9e2d9ae8067162. 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/USHM20631792.