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 0xcc97bd152e251278af41651fc8fae1ddac99d54109ceed127424764a446b8082. 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/4f4abb5e-37c6-4a37-9a32-8f8888d7f342.json and https://artists.proofprofile.net/proofs/artist/4f4abb5e-37c6-4a37-9a32-8f8888d7f342.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 0xc2dee9578b365f9a2890496d30f75cf8abee8d5f0ad81ae11faeed33c4adecae. 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/USA2P1392359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cf3cb32b1adbf1c8b63cd88fb5cb57879c4584fb9f73537e759a42896dcd1a. 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/USA2P1392355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251cfa9cdfa9ac29c1f3aee878fcf1064063eb6e529eb6a085a726ceb25afbfe. 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/USA2P1392358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3abf9b3c008cf28665f2d122395e010018505398e9066d62771eed7d77d526f. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/USA2P1326755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6585ad4b34ffed084ed45f11ddcd85ce5426e056ea161a5bd03bd8964b329d03. 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/USA2P1326756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f388ae4e030260f7afac599bb2bb4a6381443e2dceff36d6dad6d266c6e8c62. 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/USA2P1326757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1722fd9602fdc9e6a4575469b0ba6304e091d1335de0243df12a97f43e803526. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA2P1326758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c5ada8439b6945025954fdd04ef111fd1581f625bffc55bfffc2fc61d41fe9. 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/USA2P1326759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cf3cb32b1adbf1c8b63cd88fb5cb57879c4584fb9f73537e759a42896dcd1a. 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/USA2P1392355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f67f1d827cc5b5e08faa6450a18d046834329515cf070449a26604c69658bfc. 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/USA2P1326762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa226a9e75bcd27a1464d920cf8d064ef2bbe7d68b410174a387e64672c6ddf52. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/USA2P1326763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dd564cc3aac848d4d993644f087212ae0917ccc2476d40e8e4b7750e88c91e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USA2P1326766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7278ab4eec2b518fc0199e8c66a2194615df05fbe1af127299998e829c2423. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:14Z), 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/USA2P1326777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfd502453c0e484337c522d52f8f2b9841fd9e583d180d26bd17d3e1f5b0c72. 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/USA2P1326778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cb0a64c480c1bc103cf793a6b3649f3139deec71b917f7c212986473ab5061. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/USA2P1326780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49f4821af2652238f7b8a8f5bd89b52b86cf30b09c5c33fe86941bb9db72509. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USA2P1326782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9634a63a7f1410200d165b38409248ece6b53988bcd943af02b24187f540ee52. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USA2P1326784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91117a0711c051bcf7145a860f30819a732fa1d1cc0f78748deb902f61e99984. 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/USA2P1326787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbe26885bea2f9003cf2c79c94d2b740323fb2654fa99f96f71dea3b5c43952. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:39:14Z), 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/USA2P1326788.