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 0x792075e8c32b6528147dfe1f62e2a4a9896b4dd09ef37ae83051675c54655e5a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c4e05ea-29ff-45fb-a606-6f91c5572e27.json and https://artists.proofprofile.net/proofs/artist/7c4e05ea-29ff-45fb-a606-6f91c5572e27.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 0x904bd3ab0b5df8679392cf34fc06192b363e3f2b8dad50c4970f57aac80e0661. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USGE32230101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02646b0a0d442dc59c1f6c419d3a30c2bde773bd04d403111c0c27f17df748f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USGE32230103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10021af26cd0ee193364ab6668563828e857b36d8cfeb356793e95338437c19d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGE32230104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa019ce72fc4756f75134bcfcecf80ac2f4eacce243d460525a39c8f3c2648e3. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/USGE32230105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8710e07e3c7575144cb81796dd9fe72b3c7000657199688b65c59828470e8f0. 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/QZNW72212205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6487ed0e8ee0dfd0848fedeb2749087370e3bb342a92fdf0211d3b1df0bc6a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:47:29Z), 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/QZNW72212206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868d10c50f88d7b10734951d97bb251aaf84a28538119472fa426901f2fa4521. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZNW72212210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a73fc556a914b0ed18e285d508f9a50ebdf1b3477d32181ff56f7705dd2318d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNW72212214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6fba86b4fff738d5bce2e5a7c8cc980dbb0a7c1ed38f687e6f8d7b2abf8e8a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGE32027003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06d7803205dd48883574dd289db8986f96640ec3b150202992b169eac72e514. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USGE32027004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db99fc6201c1bd2f65b85f5544bc36ed6f6cece83b0912bda58fc85279fd9ce. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USGE32027007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ca4388cfc64f50d61969df9539ecb02d9b4eee146c5988990f7e47349795ee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGE32027009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715543f5f9cc08fe393db67de7bdc116859aeefd59a86b430cf0dc6c287c10db. 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/USGE31925802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb312f0c013022128d9186960e6827b87c4567ab5df7e38d38acfab7a8cb30f3c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGE31925803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f535bb83939fb2f52556b4a8b2097998811fa43de90d50719bd27bcaa0b2ece. 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/USGE31925804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce9728faceb4f1952d2c0d101774060ba651fde80b3a21790cf3e6ad1bee212. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USGE31925805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba5d22c77e2238183dc82e5e5e3f550d390e92a39232a84a66272f388175800. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USGE31925810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737c69eee92c3bcea7df56367fbc5c9b03ab405c6fe8b1f6e1239007b86ded01. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMA21805567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b839a142a9d08599e033d2870931cb406a03c9a3afd36b337dba490fc89bfb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21805569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fafd165161cc337dc36fcfe3c2237096034253956e8dd8aadbb0968fc59bbf9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21805573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576ed1b4fbfdd33f2717417011c6283b0d6d555ac92e9c4ae43741cc4cc6a96a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMA21805574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b416e9edd583e2fd5ef02cb59948ca1e36ff7a4de90fbb0d3d16ac5dc376dd1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBMA21805576.
Helvetin Yhdeksän Piiriä (Nine Circles of Hell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cb7d42ce799281ce85dd337e5f8f008930d6bce7d2029ccac8e8596d3c8f1c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USGE31623703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c5613a0a7b2e09fc414a4924aaa9dd93ef8ba451084243cea1ec2873a0d216. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USGE31623704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa996b7689d354d29eb4f7b111f7472453211001275d3bc20b493bc61aeb70a9f. 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/USGE31217801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c466fb608280cc2633d5c6d0be45728569d95d8f151e258621d6182cde15073. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:35:58Z), 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/USGE31217802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd607f5db1c1a85f6b26cfacfe0c3d503621bc30e28a8acd5485f0685dce9c5ef. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USGE31217803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627d3ce9c314543fd482b3abb7b9699a1027871e5fd4aab134c9124f7fd0985b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USGE31217807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d2ddf045991362b98ff66f6459357c9099faa4961e43a03d24d3254048be29. 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/USGE31217808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dccfa9b868432f2503bf3a1fdaef54b1000abf45ee87dc9f0b591930a532b81. 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/USGE31217809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1e03e5b2ff5dcda6980f60aef65cfb76136370a1eb97bfc3c527a23921f3e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USGE30913901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1ed32a2342e02782a37bb1cf2f7e596107b7ba1ed2a07ec1c84a3b5221639a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USGE30913906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c69fdd575b3b2803802ea581f311fa4c8f552c91db995c3c5d0acb4c6e14e5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGE30913907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26253815dfb3054d71798843e5aaf2b1d44488b42b437ad6e183bda6345bc963. 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/USGE30913908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7c2098f5e36e86f0b683a43121bbe64ac472aa4ca4dc961e687a498a751aec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USGE30913909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5681b473abf081af2504a3dd0537380a847f4762b36981811bc691c860d9cb49. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USGE30913910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cfb110cd95938e7b56239cb1fe6176665fa7ef40644551a5a876d84e7e5ed6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:25:53Z), 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/USGE30810401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634bafcd8978dcc11c8f4c9fb5b685511fb52df03b537ad60e6e6779e4be305b. 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/USGE30810403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f71c63e48b68b53bff1c0f51030b21c73b1e3e5918166fabff5a2e13d930dc1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USGE30810407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868d10c50f88d7b10734951d97bb251aaf84a28538119472fa426901f2fa4521. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNW72212210.