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 0xf0ef72234efe6ec136d9f2cc95d6fc5e0508971c1e24618a9345b3cdc19962ba. 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/98ec1d1a-97ce-4b6b-b0da-f60b7e4e6563.json and https://artists.proofprofile.net/proofs/artist/98ec1d1a-97ce-4b6b-b0da-f60b7e4e6563.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 0x3eac12002f40f0bcc773002aa67939993d8d31ea2481d15077a56a04e1fc05d0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY41926429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ff7fd88db0c94b7dcdbcd923b3429482c4d6fc96c70d8b22195892111f9f6e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USDY41926430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249e0d977c6d6f433d760856ee7e6118a8e6dffa2370cc23892f399eea3494db. 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/USDY41926431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc8a207aa7f0a7e90f7b1abc5a0dfec51fd47a77c0a9dee70497e008431ac80. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDY41926436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32757c307f8fbc58ae673eb95a86e5da6db572c6d5116dd7da1c04f6fd8988a3. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USDY41926437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507885aa0a910d60aefee8e30b11abd7603bf7173c00155f4994c3525800cba7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAEM1959999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9e72d0b7a25b2bcb3dfecb0ad42ec3fa777f007be2fe421b3d86e531b57ea6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:33:50Z), 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/TCAEM1960002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b8b75ce7bea22865f93b2146f608c06fb67dd1b261a69e2035e8ef15c9a852. 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/TCAEM1960012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe631d24ffbd2ea5bfa35b3dabf534565780f14ba86e3557f42647a68f23a1442. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAEM1960014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecb0fbefeb9e0257d93fec6a29b2821afced912d867e1cfabf60fa848753cda. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:26:42Z), 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/QZNWZ2014069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221966921da27e7bb9e881432e5511ed2b18c1c950dce9c0689c55c601f542e9. 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/QZNWQ2152495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377177edc65cef86c616d91e0e941613fe2a6d0c5f95838e78d6f4f73f05fd74. 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/QZNWQ2152496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37dcfa423b63770574a58d13ba4be32d2fd93cd1281178a10ece281f76e3a60. 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/QZNWQ2152500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77d348e746c7320760cea1cfe303a52925660881eec92f1a0066f199895f2a5. 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/QZNWQ2152501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7d348dff8137e49d68dde0eb51515fe84201d56e13d1fe21d892c0d6f9b284. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZNWQ2152502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb93e76438a2ce60e6e164fd5ba4b194929983c3910d28155986932346f41c6. 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/GBWUL2429722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8728533f4f8c28d1088b39e6211d46493c71e6e873227c232fd9b8c4db09f3ac. 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/GBRKQ2497995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6218b9e9b28698b544676d0499cfa085293198843345c61a5a1bcc8bc240cf65. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBWUL2429752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb93e76438a2ce60e6e164fd5ba4b194929983c3910d28155986932346f41c6. 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/GBWUL2429722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8728533f4f8c28d1088b39e6211d46493c71e6e873227c232fd9b8c4db09f3ac. 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/GBRKQ2497995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8225b6e8182e3800de6db6d773ac3818ca3f513804084d621b029a1143c1f55b. 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/GBWUL2429734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6218b9e9b28698b544676d0499cfa085293198843345c61a5a1bcc8bc240cf65. 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/GBWUL2429752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb93e76438a2ce60e6e164fd5ba4b194929983c3910d28155986932346f41c6. 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/GBWUL2429722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8728533f4f8c28d1088b39e6211d46493c71e6e873227c232fd9b8c4db09f3ac. 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/GBRKQ2497995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca565cddd54fd1ec31358ac82d9a8d635d44b35a59c41fc2fd22ca3159109d3c. 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/GBWUL2429720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb93e76438a2ce60e6e164fd5ba4b194929983c3910d28155986932346f41c6. 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/GBWUL2429722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8728533f4f8c28d1088b39e6211d46493c71e6e873227c232fd9b8c4db09f3ac. 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/GBRKQ2497995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8225b6e8182e3800de6db6d773ac3818ca3f513804084d621b029a1143c1f55b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBWUL2429734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e86d9a187d227605057577c908184140b59b7fcac5a8482e4255e24eaed438b. 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/GBWUL2429736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388cc5d5e256aa6cc9b34ade47e61b4cb04efa977157ae975919726e1fb5c2ed. 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/GBWUL2429747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6218b9e9b28698b544676d0499cfa085293198843345c61a5a1bcc8bc240cf65. 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/GBWUL2429752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8add8627610ae0f9df779e3ce19d1db5f2891b640e33d4f5ad0965a1ced382df. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBWUL2429755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602ee29e051fe0c1585a163b8b037df3593401f218add6ee0a67b569e7996fcc. 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/GBWUL2429759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ac188df93744abff3f322917a7e56cff76df0503cbca8180f28cfc6856b6f1. 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/GBWUL2429765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2370d818a6a6e8d6710d161da40f7d66d2db8fce293ddcbff1f0b836574c3188. 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/GBWUL2429767.