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 0x8b4b56ec56f50e2f6bbedf9b72109ee90b97bb32a283f60c6a9302599d22c250. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea6ebc80-18bd-48fd-829a-f7c976b612d4.json and https://artists.proofprofile.net/proofs/artist/ea6ebc80-18bd-48fd-829a-f7c976b612d4.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 0xb46c4189d97706534af54fe29674a08d90490ad5fb5b4b2ae6d24a28472fb350. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:53Z), 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/NL1Y62400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2414f2042679e029cb1ea286f528af88b6580d2de4c7702fd7ce029da5b693d8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NL1Y62400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff145add1c9021860bc2985c2d6d177f8b68fee62a6751d6ff0a0f84cdd6038. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/NL1Y62400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7107ea6a39a7c72ef27f63f7b84024f6b87036873d02e7710ffab1b630677486. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/NL1Y62400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eb419da65066acf35701bb8d8090a98bfa2129aadaed267eb4dc5fa9d4b80f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/NL1Y62400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f75f6fa128afa418b8caf52d19d6bc29065dfaf298e3fde5660d6d19cd5209. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/NL1Y62400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3958261b336f7a0d5bf02cb91376dd76f8be3eea5d985a597ca8cac79fa307f. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/NL1Y62400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e37aaadbff4740351b05629d08b06c9a46bd91477cc144e739e042b3124bc8. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/NL1Y62400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53346f64380afbc2571c7a8abfa6e45e12f76df5ff2e9dfb02c48206310e467e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL1Y62401733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd7c4b6c198402859c84ad28dcc063b683b33b17357f864664f9e2c1881b733. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NL1Y62401740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45439316fd369d6c6eac9ba6119714cfbffc9f1202fc82e47328c7492e71428f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/NL1Y62401741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983812c9f84aea0e425c106bdfe577874b244a3b3aaa98a2cb3d03f27e3a2344. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/NL1Y62401742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a039f0996c35a8393e1e69688eb49dedf39da2b59a259fe918454c5a56c7f9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NL1Y62400979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37a865f6b74c8431f22d2121401d156ecffc23871ca78748f867a5e98d5aaae. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/NL1Y62400980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3903ef1e22f9bfc5b8ddad29cb6a8728063543b94c1dc0000f6cecb33ceaa28d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/NL1Y62400982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1f845fc05d9535d50587a327e0fcff2cd4d5be6c2a37f0e91139b4ed4b4238. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/NL1Y62400983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3de9a9ef9411dba60dae9172087c66fbe914a90f8914e1ceeb58460ded225ba. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:21Z), 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/NL1Y62400972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ad4ba2465da977aa5e65240fc232fa353fd3879add11e09aab9607e171867a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:58:02Z), 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/NL1Y62400973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dca5146e6f1074617725f3c8febd8e8130d437d516965d33c058d1001082a4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NL1Y62400974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c9527b05a2f55eccacee476d4714bcb1ff6c232c21fdfc4c5e7ba7827ebba. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/NL1Y62400975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407e1d58cba7a5ed36cf78edb2b0098690306f7dda0866587dc09bdc75af24f8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:54:42Z), 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/NL1Y62400976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f75ff87b144f04bb21fa08808282dd478e64c16ecfc653709ae7c5b8d3dd55. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NL1Y62400977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0d8ea5d9a8a980684ebb58876eab780d46bde234512655473dee14e2f3945f. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/NL1Y62400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d70f03af309e7bf63a322bccaac886b9d8d0a35fa3e669833d958d50f121ed4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NL1Y62400903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4b0aff4023a2aad0b29aa2e32c6334ba55e11855d11afaa7aaf7c1c145a8b2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:41:12Z), 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/NL1Y62400904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e26cec79d83b195839dccafa561d055b399a9eee506500f8e3bc90daaf3f451. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NL1Y62400905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c289efbfbd04b7a878b973930e84f3ecc6b6726aa99528eb7c01bec7cc06b32. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NL1Y62400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf26a20882cfb7a06d7c9856003b3cec4d9dcfc12e7008436db456a0a4b40060. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/NL1Y62400907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374e0d6911bb031fe4a3c70e45f470a03b62cdb0e348dbbca1f5040ec132a98b. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/NL1Y62400938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b0a88e3dcc1b24501c299cb589cca2e32d0c793cb5bc44c60b3aa765317230. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/NL1Y62400939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34db7ce543a89db94d00017a559601326cb0209b36155d860ef2b9c33b51d639. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NL1Y62400940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73abbcc7e062a4588f8db9a04f2b09e086a6e7f948223aedb5ae8918b00cc3a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NL1Y62400941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc2be3fa7ebda0275eaf19e4f27be066bcbf6591304bd101ae253e4eab945c7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NL1Y62400942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb0364943142e264754b3eabcf6ab6494d8b1fe7486471075b31225e23fb6b4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NL1Y62400897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d90487eccfea48c012b1537474fa820d68c828f61f7c810111b6ec72826035e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NL1Y62400898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115f9f7f3c25552e6c8c159fc2c5e3ecc6fe6fe8fd7c05f7bd9a5ede2c9a526f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:18Z), 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/NL1Y62400899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931652f7cc69553ca1d862a70825e53c2725ab4830c8dca1a28fcc936e3627ab. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/NL1Y62400901.