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 0x260312d2dc323608c01a5d3086a95fc00e1b5b79b0a6314070a822a559df0a1f. 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/da3e5c42-c6d6-4445-91f8-14b413b021df.json and https://artists.proofprofile.net/proofs/artist/da3e5c42-c6d6-4445-91f8-14b413b021df.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 0xedc9205b8e91d641b86266e5b6421bc86eb411797c460183fbfc916c3e6bef1e. 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/FXQ892100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d16026760ee46fdbaecb96075cb3114d7ecac285e3a323008fd7db1a3d76697. 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/FXQ892100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3508d9c464b5eadffb25ff1d14c12cb095d26bbc7fc28699427cbb5df8298349. 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/FXQ892100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8de556547c16f91c2ff192e8c45b7d9e52d5b2b7d8599be562b5263a047d477. 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/FXQ892100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5590dbbb70cb1e05f5e14f93dba1013e414b5ef4fc66d1beed0e07ec37999b. 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/FXQ892100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218b6f39de659d39f845b75facbb05f3c072eb1c01c09ec1527e2426853e07e4. 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/FXQ892100145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dff9c01729d802ff2982d4d88a27b963fbfe7e7bf2c34f47c11843e48633de9. 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/FXQ892100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8c3e40f9fd27e949900bd35f073da8c05a499685981228f5ec5ae6658cc583. 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/FXQ892100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4e3cb919c3fdaab7136c1c4ebc7aee0bd1d12275e1b0bcb08c0b181304ef1f. 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/FXQ892100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b364f1e0a3a57d44b06a564186ae5c19c538ad2e9fe1e41213ba5cf0cb6ae1f. 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/FXQ892100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47360e40c2a0c78ba77549fd8a78fa729fefcda978f56d9278ab2601b24b14c8. 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/FXQ892100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd53557b016569bc7fb774f20cc383c5eab3a66e3f7dd9904d7a9584bfa6239. 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/FXQ892100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323cb875b37c58e185a1a204926a001f13e516d2d6aabf6279bd23aa6794f2b1. 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/FXQ892100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51e8046e357e5f4e02ea724d492389027202a3d405e81c87f5a0fbef6ea4ba4. 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/FXQ892300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e653916712f40b929b27e165e84cfa35a029565566e6fd70f48a11326d1a0c. 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/FXQ892300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb828f2ef792cae8224213f8f2c179dd73d6526a163cac016a25afeefcf79de4f. 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/FXQ892300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9f04cbb20efeddb1164a05f15acdb0217ee9f07a2d074cbf5c836ad1db839b. 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/FXQ892200499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c5d4ebca98d63580b420e2ebcf4cd9732b4b74bfb4ce816dba46fd0f2c2206. 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/FXQ892200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224f6c9299b4a96affb93e11b75778fae134f2a665f3996a3be1c3daea65cff1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FXQ892200440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444e4578ea98315833955a070b292470f53e165c624ee304c1aacf873f914b68. 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/FXQ892200498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224f6c9299b4a96affb93e11b75778fae134f2a665f3996a3be1c3daea65cff1. 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/FXQ892200440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c5d4ebca98d63580b420e2ebcf4cd9732b4b74bfb4ce816dba46fd0f2c2206. 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/FXQ892200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba4fdc0d6609637b54f583a8913b258c4fd2d9bdbe781c7b3d400185773036f. 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/FXQ892200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba31fea21e256241d6a87e5b96a78e735a4dd9bdcd6970de5c7b11f22f141c9e. 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/FXQ892200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98f3991083a3aaf42e281cef19221ed768655530890bdcbfb8533ed4084f01b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEQ2228505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adf88ba9d75de722d7979ff2704ea8e0c20922e1adcdb86431a3420e2db6c8d. 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/FXQ892200228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc061616980649dffbdee0292ab7396baf284815d50083ad81f009dd9836c28a. 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/FXQ892100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b364f1e0a3a57d44b06a564186ae5c19c538ad2e9fe1e41213ba5cf0cb6ae1f. 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/FXQ892100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc9205b8e91d641b86266e5b6421bc86eb411797c460183fbfc916c3e6bef1e. 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/FXQ892100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bdc95fe0055d7fcaaa8b4fa220c27e789c7be1642969dd92fda6b7e137f7fb. 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/FXQ892100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eba3f65089f64fe20ab177b4315abeb4af964f2f0c66f5fcfbada6c650e312. 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/FXQ892100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7494f080f52983ec14a467e2c6ab32c7377cbeefad6f124f0d6f7d20ba83bfa6. 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/FR1A92101385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8a3883aa4661e1290df3f2e16af01b12f88101e40240e7e3872f1e20634ef9. 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/FR9W12111773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06af14202440f27575e42c9cc40cda335910a6db67ed05b9531422b7b64467d2. 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/FR9W12103567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364fec376a52f4cdcfb6ebd2d900c2c81a1ba863f8e1043a599cc000b336817a. 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/FR9W11917057.