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 0x21562461fe5e2cfb2741d099b5ae6a83ccfe40c048de5e4c91f1630b73f17d48. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/767b0d51-9b4a-437d-b633-781fb38f3ea4.json and https://artists.proofprofile.net/proofs/artist/767b0d51-9b4a-437d-b633-781fb38f3ea4.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 0xc90c0f809eec96477bfa334b71063cfbc1cb08c05bf267befc7fc0c1483a8992. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLFP2528809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7205158d91688fa5a2a9194389b6d44549c10910fcd223797860ebeeef6090. 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/GBLFP2543786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594c09403b9fea84d05ac8cbe5922f05d9de2aee7fa8d8df76a0f25721827c5b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLFP2543562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9aa72b15547cc1c3639b4ea8ffc59e801b3860342ca0b4a3ca1b7988e0f7d7. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBLFP2543800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f35babe6069648efdda4f366c03350e24fd70bd39158aaff90ab30425bcf94. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBLFP2543551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a711864e8473511f5c09c5599aea497a5bb5a66a3f7833bde4c7c3d9b82a9b. 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/GBLFP2546553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256d20b9986d2696bfdaeb32a083b93b9c44fdfd7dbaefc858c844b28d9178ed. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBLFP2543496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6690321585daa83e26c62fcd934d450c7d21d4e047f47b0efbb2c392d96dcb9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2546501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05edf9af9bf9fbece51311c6fc60aa5ad5216853a0e32641b28d25fbc8625ddd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLFP2543795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595238620a66ad4808cef33aec5c19333aa1554bf7ffacca729e1625d88bae70. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBLFP2544434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f49f907efd50869f56fce6dd2c7200dee8458bab2939f4de117f83e4c589d35. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBLFP2543760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde02f51f32f41d2560a3ae0b04f2d3863029b867cee3f1994117f4a92d84e066. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLFP2545823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf038f71cbc377a46d4f121d8dcd7b8e3421f9f397802dee737381a0305b6eaf7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBLFP2545820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143e51e32310826fb79020b9a24c9fbe3e4bea3edca77b8af82fb525e6d510d8. 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/GBLFP2545824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc376dc3439939dd6fc04b45816ad78dcd45efaae3fb2918aba346d79daa93190. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBLFP2545821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04758d12fcfb6aef94f5c4548380dcf5fba3ab3ac2bb4e827cc794a91a2da00. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBLFP2545822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad86d96ead2bda9d6eb04d759e9645b3cabacbbc27da5bd81133d35972a87db8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLFP2545818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e628539b4a0d05cc9c67d3e926c6587ad17701ddfaf02b68c4322e4ef28c32. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/GBLFP2545819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd606dd3904324eae8ab8ab940251b479af8bc228ce68e581dabdeabaab57013. 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/GBLFP2548780.