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 0x3d2ead488d92be05d3bcef64070ade6c08dfe569ba78e21e9a0dccf2eef36fce. 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/b9fa871a-0f56-4c1a-9da6-832a09be3cf6.json and https://artists.proofprofile.net/proofs/artist/b9fa871a-0f56-4c1a-9da6-832a09be3cf6.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 0x714db6c0c5790f6ff741754ae9064aacb30a3a110237befc4b4c6986e3f20710. 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/PLC062433405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa6a3ab2dd39ee0391dcbfdafe38790ba5c52dc397114a07ac838e5e1055a6e. 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/PLC062431032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afb7d93cbd712497403f4083276fe6d4cb7427dab0254358cdb6d01289034a2. 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/PLC062429245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8064aef7776eb7464bbbd7f58028cc8cb5433877b301cb3bdc69037ee8b0256b. 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/PLC062424697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590e9802a825b778e70c6796f1d3f8bb6b1422b04e1f2502e94473056ba512b1. 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/PLC062420179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9600e6566c881e4690221a70d52f4cbf62d8f9318ff3478f9ec431ed82c8a8. 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/PLC062403325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd18fcc93751f32b25e667c3d1712cff5f933d0d86c259904d8dbfc051bddfb5. 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/PLC062397462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463c03e461c9cab57f5061913d2492821dbc92c428d071daa5da857ef5d83c28. 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/PL2DY2301471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6378f0bf9f7234bb4e7e6d77a40860ba9201a945778cc095037c38b571dbb8e3. 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/PLC062371531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f8a65525e4e5c13963e747f7aa1262eedebfc69da7dbef715e407f4b2a4754. 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/PLC062365507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2388a82703c9b78fed3ce8d9d35e6bcf7a986bd87c640093e94cc9c160d6c1e. 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/PLC062254599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a8906f7190f32002a8f7506d64541ae059b7a3d61fb2767d545a8474f76d53. 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/PLA552200810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fce90d50a645bacffaf5b9eae1d4e9ff0004892d0146c923247e16d7ed4a62d. 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/PLC062240890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9775936c26c08014986f3bdd8c29bcd5cd45ed70889e9937599c62ad372842. 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/PLC062228525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e70e4b609cf9f4455cba25a25c945fe3ba670a7d10c08b5872d239335b6710. 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/PLC062224500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8eba40de149226d9bd25c585161706bb36f5eb0dfc89260a6e4619bcc2c290. 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/PLC062120062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d78f030127a8dfe770bc8e6c3449c2045bd25bd1e89a897100452a49cb38458. 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/PLC062118337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f28b4b933818bdb43781affdee71daba9e7c7768fc8e21c79b48dbd5abd5840. 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/PLC062116065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a853758ca436586933ad9ff933581f3296e6035917af41c223fc47127bb4ae1. 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/PLC062009881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c03f934f53bcffbb41ed4b5a17883292bee95f0ce0f57886bbfe0c6afa6fca. 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/PLUM72200437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463c03e461c9cab57f5061913d2492821dbc92c428d071daa5da857ef5d83c28. 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/PL2DY2301471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab77b7950bd1cd40e03ba260cfe1ad37c98386cbeaec95f8cc35566726b5855. 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/PL2DY2300485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f40171fa874ae4ccb2f612ba502457885ba78eb77d9e360ae5fe4a4bfde7a80. 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/PL2DY2301474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf562a64101f2b73b1d55cfdc35c41d0baf6d36da210aec7eba5776fb76de07. 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/PL2DY2301476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b9ab96fc40ccce5720ac34646bd5dcd9203200f5c445523d4e7090f0ddf0a4. 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/PL2DY2301477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c95a4e25e1436ece0ee61c1d0e58be9d322096e9c08c31816fc6da7603e8d90. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/PLC062115616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefad94c497d2112f67f4951e02467c964b53daa3532b9c72b052f85a05f1cef3. 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/PL2DY2301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dd706d9d81d1e9fd0c48c20285a4da16ff929791c94f4a9368a18a58907ed8. 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/PLUM72200532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3b626a6df2a0b518a4caed851372d69d09ba5dcad5b149d17e1dc4f589fe6b. 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/PL2DY2301481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd5bbb6a1962aee664922500c352068533666e40302db807d0264d651b2484b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLUM72200700.