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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767a10597e572db3ba5869a6ab62ad11da757d2e653c233b105042aac27f3dde. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8103d3a8-c46f-4b08-a80a-79ac8fb231ff.json and https://artists.proofprofile.net/proofs/artist/8103d3a8-c46f-4b08-a80a-79ac8fb231ff.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb889a1f0e7b019ff3c91c54335ef7158dafd2107e851fc474e84c390eebd705a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZ9JZ1744971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581ba6fa7469e5c63e4be4b64f349d29940e7482fde8a24b8d30ba2c5ec6f2d2. 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/QZAPG1740038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2164452f9a862e42ea83da493dd2330a3c7fc34058599137e81384b74da7d4a1. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZAPG1740039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45fc254e2300f2768f6bde42b0f22b2963ec2d485918954d2e7d34b697adc55. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZAPG1740040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927ccd4abef627d97bdd7db380491efccfb53f349a05a0e3f6babd616f626fe5. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZAPG1740045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38262231ff1562d3b7663169e8ef6131590a127638413db8ecf3cd6b41129ec. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZAPG1740046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800a2dd329a0afadeebe5b4187be4e968cbb292fb301806104386c268ffa1795. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZBRF1883289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8305d3f521c1cd18f9959e3b179c4db762d2f11e21c5fb954f7e9683e444f50d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZB4J1831218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8b261ce33220c098500c2fa8504289a5674c146fbdaa29d4c736e7d8ddf103. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZDA41876445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0a35122d25ed0d5829c7ea3240f89680e69b7b45ded73d12568e7f08100624. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QMPKX1881715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d03b20baabcd20a61028f3b2cfee3f07ebbf4afa7a1df7c35b8c4c72c14e79. 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/QZHN41915407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863feeead8ca89daffbca0f8b72e2260cc0189ebd5ad4ffd4d00bdbebee8b29e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZDA82007958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a7ffcc229b62c3e198ca87ec94375e6bca32eb7d3018d24198e9d2edc4fc89. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRS182089079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c610b26655aa913e090652bbed196ef24913a1663981105eb4cc27f36c33de. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZDA71926777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185d8321fd4e8cce2598864a4931aad6647f990fc5e347a2f62a6ec5093e9eef. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES52050532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ae028e0dbd0e32f73b5b8324c712e083b06cae3d8fa8cd7487fe67c5c465ba. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR2X42123020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd266620b7fafb4788bd5c06e06650c6521b96f4f079dca37b362c12922308509. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAN112200695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4740887b1cd3e19889a031c97f664f5251429b10dd5a780326a517e59af05. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/CAN112301355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be5bd8587c35ed7d82b330ba83fee879edaa18a7de0247e724ae2dda54ae6fa. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CAN112402118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43176d9baa43c3f0ecbd047a1eb8721970db38b697fa7c9d7a80facb82c0ef73. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/CAN112402405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f41dbd9a77d7ddc2993fa21e3df23bf803cf30a0202173c42ada15fcd8476fb. 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/CAN112401831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90108349c4a45fb462ff37505f833cdb10e846a64ebaf022a1dc01f0056b8ed4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/CAN112402727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924db51fd8b5a6da57d291513c3a414b3ea726e93f834a55ec57ecdb4cba0646. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/CAN112500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90108349c4a45fb462ff37505f833cdb10e846a64ebaf022a1dc01f0056b8ed4. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/CAN112402727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955fee8d9aea7ba537d2d20b81f104accac0a09beac8eaadb63dfa444f068c2c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAN112500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955fee8d9aea7ba537d2d20b81f104accac0a09beac8eaadb63dfa444f068c2c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/CAN112500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955fee8d9aea7ba537d2d20b81f104accac0a09beac8eaadb63dfa444f068c2c. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/CAN112500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5997bb780a7647d929e48064a0d709887c63eed379b380e9da7646955157c323. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAN112500984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4492af7761b70776531c4bb77a18564887473f8b1a9754ee642d1b72b840972f. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/CAN112500986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a33f1028f8148867feb5c4426d07346eaaca2265fd5123ad97ca3d272adc28. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3F22563651.
THROUGH AND FALLING (feat. matt mcwaters & kerri)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbab5533eeac172f63964693b919a39e1c50096b23ef23e3eb63c67f8e73c53. 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/AUFF02300415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b7d226e183c8726003a5839cae84b87827efaa56a4447ba5e8b3701033903c. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DESY21401044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc3b19d97680feed528948d46e594ce0554ca125b7820f9f9af1c78b0734925. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZB4J1883549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c22ec19b9bf86ebf99a4d7ae81763c4409403693f37e1aad090ad1d35dec72. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZB4J1883552.