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 0xd18a22814a78d5fb3509002b325401b30615f4fe028915a803b667a97515a592. 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/60cac170-2ed3-4a0f-bb68-775049c96f70.json and https://artists.proofprofile.net/proofs/artist/60cac170-2ed3-4a0f-bb68-775049c96f70.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 0x1f3d95896a23059e75ad2931cfba74b7b67f7d54d57430031f8cda5119c2c774. 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/TWCC32415533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5ff69eb32d1657a876098c16aa32bb3fb33296d1851079957c38009f30de93. 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/TWCC32412145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd170b90e070ae66713ca5b42edd408741784affb75f29c0e22e2c1dc0562901. 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/TWCC32402209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd06afe11b6b82aa8e1c240592243208e033213610a1e0c2b28eb56515d31f47. 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/TWCC32401256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8561e34d9e6d2fbf297612f5720c89b9b7369bda9b20683b77b45f92126b6451. 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/TWCC32322295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5063bdfed0fffca5841059da20004c426d356723ff9b206e829ace8ee4fa6e0. 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/TWCC32321328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767f1e7d155e0278338eee843efcb505219dce77eb661f2ae0f6354982fa229c. 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/TWCC32310832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38311c87defd5a3c5d3b93c17fbcaff795c94ae07a2f81863c08a05403e57d78. 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/TWCC32310838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c99fe125f0a0d009e6e1fcf1561f38992fe4cde253b7def0968f6f6beb09fc0. 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/TWCC32310839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783523b09d891a14946e61548f6acbf599498d8d01f9510ac965d78e4abb507f. 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/TWCC32310840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccca5ff14682691e6ecbc965205ba088cb508d799816aab94bfef7be4ef4c560. 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/TWCC32310841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf11eaa397c3edb6887e491ef33854eed6282996c32380f84e6a2cd4cb678696. 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/TWCC32310328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf346da896c5789c4c15c54b39117bdb8ba5b48543d5027b33dbf58e1d4cd8b6. 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/TWCC32309943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665e95f829e6e69976b5f6137cd6756997676738a259db069703f74785dfdb16. 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/TWCC32305650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66452df272f4916be0084dd4f583e384f37514915609efbfae2df5f938940726. 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/TWCC32305651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a7d08f19b9973473e6786578b55efac61c3a56f92d143f511388ce9b8ad85e. 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/TWCC32305652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bead5f0c8db83e4740bac4a77d5531f9d02458f9568d28f3491cf8e4049872. 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/TWCC32305653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12537941aad38ea0925125f7930c6e39047ee8e4e0ea788d9e81d156b3085cba. 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/TWCC32305654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98541cf9bcb0796bb589c8ee27a1d2033e78801aee37b4c9cf089dcf1da1ac04. 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/TWCC32303410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc117ee64de43329b19c627bfdf0ac5bc64f20a9a53f9b720402371a11ec2aa69. 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/TWCC32301666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca7b94bdfeab34fcdaa7b88e2f7ef4f08ae792d1fc49f0677baa1e762a94fa1. 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/TWCC32214576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627bf096779613a72969a216fe9b79b615fa4de110a6f459d0c9d6ce3bd00b08. 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/TWCC32213367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aae5c42859cc081b7b40fd6d62883b1aad4a732f08b7b610219736df98f926. 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/TWCC32209581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc0832c6f717de9fed2a9b3f0adba500b9c3fa1da1a3fbc4202a5a4e9a9d7a4. 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/TWCC32207966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5882e43161586e510eb64f0efcc815de593fcb4b8e35287e618a64d3cf8835d6. 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/TWCC32205532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29bd8ac80dfce44dff54215dde89ff8d4423653a72da91327fbd9faa33ceaf5. 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/TWCC32203375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d36e665ee9732dad106debbe46b773c9602ad99ceefab6e90b55a849f14b014. 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/TWCC32201341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fc3d5acd5d5f43fbff6467a5a45b132f7e6cda658c95d5a53ed7252bf6d707. 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/TWCC32200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88f775a6e57eea11eafabf43e1d779b62f179e1fe9c88c346a305a42c44e9eb. 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/TWCC32123018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23f88fc423bfa0bf5188e2807f8ea9f94df5226fe3d3a2902fdd2ecd9748f5c. 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/TWCC32108536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d37fc9d77e3c02805ee050abf4e521a226871f2a7c808bd01e6dc8fcdcae01. 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/TWCC32106437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c30562517cd1546951751b99ebc065d658495c2183850d5fcf6f37a6d127c2. 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/TWCC32306417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9179d7cf1450275876a13ca8f0eef1b8030de53b0cc00341c0b254cdf8cb15c5. 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/TWCC32306418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec95e89ec6c228f04443b58630bf99156d2adc3a87bc4ceaff0f34170798ec4d. 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/TWCC32320728.