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 0xd98ba12490e4f3d93821182b46811997d592413224343fb91057e691ee71baa9. 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/da7d4d36-6298-4463-9952-cfabb9a8c45a.json and https://artists.proofprofile.net/proofs/artist/da7d4d36-6298-4463-9952-cfabb9a8c45a.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 0x4aae656ee2f502f4b34eebecef1e2e770ec8db5f4cc34516c21c667e0dad64d5. 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/PL70D2300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67633ada8ba9fcca8053f34403d35b13ce3e7a2f3a1c975d5107170cd4a104bf. 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/PLI362433820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923d75d626be9e081fc1b23af5c4d8312789bb95c94346225d910b1f9ae2d493. 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/PLI367831150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff62cb0c778deb38802156b4d86cd2080a27c2bc81b4a357bd5d81c9b8d3cef. 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/PLI367831140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa763af261bd926513681e2f7638ca0dedd04ddc2bfc5ea622abdfed2885a7964. 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/PLI367831160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580cc67c8e91330080420454a025f7900238c88dff333af9806a29d6602536db. 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/PLI367831170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a5eaf15f592e21c2ffda0a0535a34e15837180ee5a42ade06a55b906b2c454. 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/PLI364094780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb4eda670538d5561db3f9b5841687967d8e173aba579809e5e742547102d01. 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/PLI367831210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554565c02eb79101dd4dc53d5c23587168161d8cdd352bd4e1b9ae4caedb961b. 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/PLI367831220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf481b50c633c20ff6ae783117678422eab34c56f3383319bd7c82eedb4687832. 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/PLI367831230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f41508d51ff615cbc0b0ccd172b4a7f3c7683a6f3538cf3d60d66265ac7b42. 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/PLI366936980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268ac60b01edaa3b8071012cc0c87c624b2e69bb64ba912c702831d8199351a7. 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/PLI367831240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148c71c7ab5ac2c242e49ea86dc41d29f9467a7666315913f6e505f4a21615d1. 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/PLI367831250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf481b50c633c20ff6ae783117678422eab34c56f3383319bd7c82eedb4687832. 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/PLI367831230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9665a78cf16e3ba8f1acaf19f3ee4ff01057ed2a7c81eb36e3000f0df3eec9fa. 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/PLS282200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d367115195be60f251ecee1619e15308272927055d288e2e6b106785af1f24f. 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/PLS282200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd0f523ce5f1c2e3ae6a3eaa5369f1656407988e9ae273545c6dbab443e72ca. 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/PLS282200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51171dc6805438198510edc3ad992463a39826c7fcc71b4b271a3f71b2db4b65. 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/PLS282200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2311a2625365dbac4c13f8bc71f50c0c9c117a99c30ff5a2f61871a690748d. 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/PLS282200196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85e5a7b33c172e5c192c37dd1eb6055e8ec92d99df42ca77bef3f8fbd5732ea. 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/PLS282200199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880d39f41d40fb274ad507661737ea6d79c65b42f736a38054edc5a29cf45d7b. 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/PLS282200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d6d9a749d3ff7b24e21be472876378d5df378b9149c59fd302aca52fa51de7. 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/PLS282200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce8cf7bdc1ca49b13c0387fcc76fb5044ce211eeba4a023b644c88f1c8e9acb. 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/PLS282200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005347e11bebd25fedda5fe808d8467bc2fbf9ec11f2b3b543ee87dd5d52f46c. 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/PLI367483360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe281052d780fb5d2ffb0de54e1b2a72a8b7313a25da68b7bad9608c4fb86f213. 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/PLUM72200439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f1f53c6fb6bc20ecafe61be21223cc50176a9bceaee6c9d15262b9f6a989d3. 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/QZDA42278301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708f61a0395fed6a53bd6f57630c13bdec560f612dad8ef7060d5097192e6128. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:26:16Z), 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/QZWFQ2410057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50a2c59f60cebfb8ba7bf660fbc8ef82f297c0b66af16efc90d2f84b51ab8e5. 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/QZWFF2413832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d66279c27d17c92fab2cc74fe8e88495628db54bb802f6f74725b34105e0a06. 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/USA2P2141117.