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 0x645b252562569ea4597ba0e9fda93e042942d27a0058cd36c4a80dcfdda6cf95. 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/05d2d063-4d27-4034-88dd-d357d5d682dd.json and https://artists.proofprofile.net/proofs/artist/05d2d063-4d27-4034-88dd-d357d5d682dd.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 0x2cba5a2d8525eb4243c8509ae78fc8df785ca78c6dc24f6c4dbaf464498e2551. 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/BKNIU2500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f41192bb6f65c8002ca63514b7f3f3e2c99828ab5cb01a2544d62d0353ae2d. 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/BCM9A2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d77a574c0c5e57e1077e49a8e09d52c114a46aa1fc496b8f89eb3a3607d0f5. 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/BCM9A2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566c24c1bbbe0eba7380acd3f763b7d3f5d36012b9979f2961e8ca2502760b52. 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/BCM9A2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f15352e90deb4cfc19dd561f8f18a7245fefbd52e841232bc3a908dca33aa8. 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/BCM9A2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f10a5e874bc90c923dfb3e7cbb8349d465440cdd0ed3682ee336cd6109532b. 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/BCM9A2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5561fc469965b526a25315b60e573f8ea34d931295df79794bc9ee9790703a1c. 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/BCM9A2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f07ac8bead207ea2193dba1c0dac11ecf171e9c7808aed47495ac3eda5cb9b. 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/BKM2L2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f07309256d3f348044d092ba86c71787e716ec933cf4df7ccf82f80de19572. 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/BCM9A2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb773057fcd3f12e257ad2929764d661162f267ecc8f7050b5072a6aa227feb. 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/BCM9A2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266c72ca8cdc3b0cde408bb3a3c4b81a5a32b19d53e64b11df8536677745d558. 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/BCM9A2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9452a0d117bb0f8f0c99c3e6f815b561443ca742ec42977cd121f4a6fd822f0. 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/BCM9A2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd64d5d7d81d3eaa4e2bc4cbc47b63aacc0ba1753ab0af8348f24c6f22d75b94. 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/BKM2L2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632fc6fc11ae2f0401f8afddb9dd4e28ce260d08817f36a88158de5b882749ab. 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/BKM2L2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18543b995eea6fd6b071cce6b4d37c27ca34293e868ed43d127bb5c913262b6. 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/BKM2L2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19899455cd9a52f4c74b5bd6e154b4f4ad083d56c5aa5838d6d577e752d6c37f. 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/BKM2L2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc573a50a70d7498c4e158c30b4315bf3836a95584e41aa0e80bcf245dfaacdd. 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/BKM2L2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cdfcc05e3d0475a0578e7a387b94d864bf32d4824989beddefb5161070b84d. 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/BKM2L2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b95d63933740225ad7d8f5ed9c2ff2e163127b63ced25ad32ae1c5653620ca. 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/BKM2L2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd64d5d7d81d3eaa4e2bc4cbc47b63aacc0ba1753ab0af8348f24c6f22d75b94. 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/BKM2L2300078.