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 0x8013b9ead75cbe329388533fcda71055739307bb95ea9dc5ddf04684db00abae. 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/3807e59b-bcde-41fe-b599-516a99bd711f.json and https://artists.proofprofile.net/proofs/artist/3807e59b-bcde-41fe-b599-516a99bd711f.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 0xa9d4ac384837e6d2e8758dafad065eae1546ac6145ef9aeafd5dcf4bdf537109. 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/TCAGY2341408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73844c07205c469496307920b36394fb90f8c6cac9613db3f9a78a0d0013544. 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/TCAHM2356570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab1d57ce25599b33bdcca117db366a79cf7f34d406150c63cdbc8f8dce2fa43. 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/TCAHM2356579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59cd232bf11ed44ccc64f6f0a920b6182d4d540802461701592f989e8d12129. 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/TCAHM2356587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c3de6191222d41543c4e32e6a54f634bec59db994c67509d34d580a3952f2d. 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/TCAHM2356702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f722c7da33f3a32b36dca7a5e98349319d5f001c16d76f86d6e4d9f273897d. 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/TCAHM2356766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b833746cbef8bdc2c97af0f14d91785159566bac06c4cd10804126e7d4cfce. 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/TCAHM2356809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd302c808b0459bc96b7b5f095be265a7021818b2c9c95b4547dc74d798795016. 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/TCAHM2356819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab17ec39337b4448496c7cb005acea2c90732d943dad8d405f0bba1c5ad71c37. 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/TCAGR2281944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b89b21f8bb157109f40f1c0e2d8909792ec55c2a99b74ecd125a2129efc4f3b. 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/TCAGR2281963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160963afdc7194e3d6ecf85d7d3901a4024bbde0c7dd59230be5351283dad4b9. 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/TCAGR2281969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a33de6e005b99b1e6a7c6c224cf6032b675fab45e0fa814a849adcd5250306. 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/TCAGR2281973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbb83de621ae4adc053cf8b974089cdc5a27c12169c58fb5d3f48ef41b33570. 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/TCAGR2281978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d445348d032ead5f5c6f4d48d22957036a7a46763772dd0dfd4b2373f5a369f. 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/TCAGR2281985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63d7c4ee606470b000ea9e525d52b99bba81d3347b4cd7d0f0f08e31a80e4d6. 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/TCAGR2281994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac119c8a8109d8338c6690545d4b5ab5d132d16ed33e0b22c7f31209db42ac56. 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/TCAHJ2358012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eb9cd2142dd075bf85888c09de19e07431c47491eb3dcb462a7ea124e38b78. 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/TCAGZ2316496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8283c5549c3457747d0a9012b62cf0494a30c288c44ae93757c9b950a157c43e. 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/QZTRX2437212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40163c28dd865fd99159ae007a0c01c2fd4fd8373d1930e8d267c4f52a6c744. 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/QZTRX2437332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412fa327c7ece4ead561bfd7483fbec74306ecdc66ba41f2ccd181630736e222. 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/QZTRX2437334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df4b3a83a5b47603cfc5bc58525c711a1f2513ea2a9395d606553e9b904c371. 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/QZTRX2437335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e873a46a2126dc8ead900000e27ccb794bb51cac23218fa97d87f9adbf49946. 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/QZTRX2437336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde320e69dc099213763853884f7b670c46bf429cf60789d0cde4af1cc8eed3e8. 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/QZTRX2437338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe983c51dcd3f6821391968ee33e4b5e9bb3dfe509ffa2792d4aaf47d9c762cff. 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/QZTRX2421591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b204edbefc7be29c364734edc7e6828520e613c0d25c91c2c0208fc80e7fb6f. 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/GBRKQ2426833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281a83a544ada5d0b1bdaae618c5fcdbaf321565cc8bc51e6ead67129939a593. 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/QZWDD2565072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b81a8fcd25c20f7bce9fa93f93ebb20412b27c703e5432e24e68bb77c57832. 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/QZWDD2514692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c29ec898d79dd293000cea9873e3bcd6a11ba0e738b0e577ad219d7b18335dd. 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/QZWDD2556954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468ad97290fa8420ebe5bda5467f18bedf0941bd3905df7e39a99437670d4e40. 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/QZTV32546283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b20b7fe175a62f334a4fede0b23930abe0cf700acfe2023ca8d5887877ba80b. 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/QZWV32462128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bb0d0c0066818022e25b98c6462ee536f891f09d9c1f1bfe7b2681bc8d673b. 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/QZTRX2562467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc8769c0f2d0099849118d9f24d81829b2842e1f72b120e8c9092fd7c3189c6. 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/QZTRX2563910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a611e61a6e98ebc5b444074257bb7ddf59606d7ee5890a824dd5af982ffd62. 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/QZTRX2565299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c88275e45fad98ef620cfba130dbafd4ca83a56f85e1ff4b51bbedfddf7730. 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/QZTRX2565338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfe48cbbcadd46c723ff1f3eb4b9ed0a79a5a37253f4947d32f1e63e698587c. 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/QZTRX2565446.