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 0xd225517c4d4123824cd6588745cd1abf78f2de8dddbf38d483f10b70e031aa9e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0235aeb-adb5-434f-9cb5-e89cfabcc91a.json and https://artists.proofprofile.net/proofs/artist/d0235aeb-adb5-434f-9cb5-e89cfabcc91a.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 0xc9566178cd0a1f13b28ac39e10fe7efa5042438e1d2c2e80a50b8932bdbd4227. 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/JPF302100275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9a6707079012d9d32414d1acd357e25befedd17b6f55fdf2047fbe2821664f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:27Z), 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/JPF302100276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe2bb9d7d139621ec01150000fb5826c6fc765e01222fe5b0c7a67bbc8f734d. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPF302100280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b88e356d5801a09d0005aa6a2ec03ec6c3fa6db6de9e9ca60d9c34b297cb843. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPF302100281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f986b012452a6fb1c7371a89ebd172f01e12af6a66201e24abff07ebeb82f9. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPF302100283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d26626883e9704a24430e712f75c63192f5b673a8ce4265df0b36c8dfe09a90. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPF302200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ebe193e536c4e365a444e98d6bd687dd803405734f1685454ac8ffa21ae1e9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPF302200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacc275697443d3d4fc87bbecea020294b411244078ec7aacd87f0ee806dc040. 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/JPF302200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fabbc5e47400685e4aba43f7e099239feba9380266dd64a80dc7eac2377b75. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPF302200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f18bb1d19bae7c5ed513a3d5931b09bfd58ae73a960119af2e9ec7531084a4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:52Z), 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/JPF302200052.
in the direction of sunrise and night light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa679cb58a07fe5088bbee8f3641807bf423e1fa522938d8a30f3ab29b3c0d6a3. 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/JPF302200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeead0ed8aa4104deb65240505a2c343397e8dec71167213afe6e35b6c746b55c. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/JPF302200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae76198c7dfba5cbbd4547482dc61e796838b6f047aeb3076fd7dc8cb4a9457f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPF302200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb883b703039da5a0ba1a34ce53c17732b2766bdb198f31e75223b6d517ae765. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:16:52Z), 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/JPF302200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f0e4ecf80c6582bb90852caf6963711646ced6983e62437e330b9d5c6822a3. 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/JPF302200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b9e8e011c538af0bff8c7d5e47f2fee0fd4ad3fb3f7122dbaaeb5ab954e789. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPF302200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a93151cb090db0b0bee1326cce5c2a9901f8b08c32ccb26974708e0089ae69. 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/JPF302200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f68e3ef4477cd4429452420b560df5d82e398876406f8d5de2c9c04e14109cb. 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/JPF302200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8981f1beb411cf097450781629de8a99559088ecd0be0578774ca9233cd9cc. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/JPF302200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d47179de0cc48a1cfeee3d6a37681d66729c5ab4134eac443c9a665def7445. 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/JPF302200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851a296541c798f4405525e54dc99df5977a7ec81a85d82618120476208d7842. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPF302200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e1dab28f3fb479d96063d2cd1346ca2e1d9d4ba758e29c9477ba9d798f5556. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPF302200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847699b61817dbe804049d138925e6b4a2c29ab7de6e83656bc92a57966bb32b. 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/JPF302200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52e7966ce4e051b9f685dced30e4c39ab38a442cdd5d6bc9ef8fcddc7d6bc90. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPF302400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc985eb7d554e22db5161e355476c6df08b0b78d5115ddbe4b5f433eb895fef. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPF302400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ee4e4af485c7c2ff2171f3eb2e814de671dc948023f246fbf68e681dd627c5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:20:50Z), 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/JPF302400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc81d78a544e150c62fcfa6e139b8157ba3e5290cff2823e0d5b366b7507ae6b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPF302400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8d1e23bc629fdba585e40609ede8e7aaf3df820c96068de7308a63ec4be997. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPF302400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f769605feaf8203ce9a67690044074c9ab36ec479c5a0a4196377ce65ce8f1d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPF302400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce15f48ddfd9edab4566a5eee878d8e472606dd4f08a759e89ef43333cda7b67. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPF302500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52a0547e38d1166b7748d0a92e201875b3ed74f8bf3e961d81f4c7cc4dec6c8. 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/JPF302500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171305655486fbc6128e2d1cf2e5cdb6827b1e4fc8dc5b812634155458b29434. 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/JPF302500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6beeee9101dd0d19ad69955fa55d6f69e1238e3829b63d4b37b9dfe31913a86. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPF302500057.