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 0x733ba8a0c889860c476315274c279e2f254237b7867415ee3971db8e052ced28. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae45e2f1-dcda-4f1b-9ff8-994d32a5542f.json and https://artists.proofprofile.net/proofs/artist/ae45e2f1-dcda-4f1b-9ff8-994d32a5542f.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 0xadd8dc07e1743b8d6727a6cd436c0001d707e97924ea3f821e9a9d0c372c9ff1. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USCGH2070269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef34a4602facb62530dc330e8ce870edf948969b9e188f6dc8cdebc05c8bf5ed. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USCGH2070270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fb95f2cedeb58a59c5e11ca5d16f30f5ec3fc59ca68c63a24c415d33b50c9e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH2070272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556e238854410fabb67ce3424523fb9c785f1466c04069d1b17b72f2a164e9bf. 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/USCGH2070273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e485424e5e8389db77dc3944d3ede00aab6c59f691e4df9015ded902b8cc32. 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/USCGH2070274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f1e095fdefdc85f8d3a35823bb5cb9cf85cf2c2ef2a18512aa7b67edc778db. 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/USCGH2070276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf5b5d6abaadf1c5a4309557e552f4ca62e0339f3ab2f216bb809b0078e3187. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USCGH2070277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e926e6a9b3c24f6314b0c2705c2b5c06bb5e8313968cec1c7bb9b86ad7bb2b4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USCGH2070279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6896eb605f1c2ec038fe39892a4c0fd00f5d6bdcf6babb633182d42957986e84. 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/USCGH2070280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fe912fa91aa93998e3632e23d18e5ec7ebb2ceaf4892f60fe57bb49404a767. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH2070281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07f23db512bf1ab8674c735e59fa6634a3c0a9aa7ff3b514388bdc03eba45f5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USCGH2070282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01bca022e7575db8e4a3ccb5878d3600ea1d14f53ae02707fbfde8dcf50c243. 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/USCGH2070283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775be835b74fea4064bdd0c5282e5c66e757fbae5b92391817552ab373133293. 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/USCGH2070286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaebf7b6f4098b5e0d898554480bb565e111986b8e7ff209cbdf28bf874a278. 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/USCGH2070290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8e117209727e361d5d9686ab8bc5b570b99ea32ce6cd72828136d213732c37. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH2070291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eead8a9e10b11fb1e4c6bbed6c44d7a411259236e401e40868187b25db5e38. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:25:51Z), 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/USCGH2070292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515c100b467f58ec99d9047e81221a2223b5f5162e62196bb637c62f0bd7608e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:18Z), 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/USCGH2070295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3f2356f224679aa5bb12856cebcb4f73a88cb519c4e70426e8b505045a9a84. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGH2070300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b5c2d8dfafe22bf41f861d463d41a634f69bcca446bfd64cdca4ac2c3465ee. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCGH2070301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960553d46f369b349d954851ad5caf988917742d557cb6f6bb3c1d4895abd08d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USCGH2070304.