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 0x78e5e8ebf62bba61c281115c9ca12363aebe71f3bf8328a0e30eae84c496a854. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1dcb5d0-9bf2-48ba-ac02-c48e07f770ac.json and https://artists.proofprofile.net/proofs/artist/d1dcb5d0-9bf2-48ba-ac02-c48e07f770ac.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 0xe868d7f8e07cd9a2ad80965679b62e18ed8b3cbf5502e247f869de06aaf660c5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBAYE2301256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e86c5dd373991efe3b1c7f55d5f49474ae25e8cd54dca0bcdb09bbb34121fb. 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/GBAYE2301641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa012f744b1c0ed523a4602f43db61f3717cabecdabe0356cd7f20450f4652095. 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/GBAYE2400392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d355acd007bb163c8ea55f1445183634c7b226101cb51a7a6fbefe7168d5efd. 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/GBAYE2400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc644168a1e41840ca3cb7ff370ae12aa4394bdd1fcddcd23c18304b8355b8faf. 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/GBAYE2400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa012f744b1c0ed523a4602f43db61f3717cabecdabe0356cd7f20450f4652095. 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/GBAYE2400392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4efb86f39f487e48df37926458accd6164c416927e48347d22dc82c4c71a69. 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/GBAYE2400393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990014d865e423deace358ffb2e2ca9937ab57acdf913aba30662d2c4246714b. 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/GBAYE2400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e86c5dd373991efe3b1c7f55d5f49474ae25e8cd54dca0bcdb09bbb34121fb. 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/GBAYE2301641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d355acd007bb163c8ea55f1445183634c7b226101cb51a7a6fbefe7168d5efd. 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/GBAYE2400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe868d7f8e07cd9a2ad80965679b62e18ed8b3cbf5502e247f869de06aaf660c5. 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/GBAYE2301256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d4e83fb76b25ac33ff7a58e75b4edec755239b6f42338e64d792ca3e997b29. 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/GBAYE2400396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcd519fad59cd826253096847e85ddc28ec96baf51408a3adcc524db9fc0c55. 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/GBAYE2400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7543c488926c6128409ca35cc07badf9f936cca2c366fc11e93e0c3e0a6677. 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/GBAYE2400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2be2c7d893544bcd5875705fc5775a868aa9f7c64a6ca3291bdeabdde052389. 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/GBAYE2301796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2444b928791b95780a83dbb1acefedaa3923bffac29b1717d4ca5b082b68f99. 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/GBAYE2400399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bde601c40661144f81c4cc70be3f443cfbc366b2e3f48a7575f40075008b69. 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/GBAYE2400400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0959c9991d069a31589096b6d2fc996a9e146287a0e30eecebd8849375d19ee. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYE2301797.