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 0x119d5bb77378202237e7855fb71f262a51eb472ed129d3f3d2c5a3154b30f803. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e087f53-d684-4895-a6c4-0c0451ada5e6.json and https://artists.proofprofile.net/proofs/artist/1e087f53-d684-4895-a6c4-0c0451ada5e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Umeå Hardcore Forever, Forever Umeå Hardcore
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 0x29986edda7db749023018bde4ce669244983fd192bb7ce0c7f27e827fb61b2f5. 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/GBSMU5349964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf189e4a5aff537f97b27de41aa10b612dc8b3321084170cde56cb5723c56cb9d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBSMU5349873.
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 0x3aa57cbc440e4009d08ab19939631397847e79375ac98ea8ea110ac522da787b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBSMU5372301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b34242e038b3634b73fadd9d75522cdf6b2d968599060a11512bfe784639988. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBSMU5349876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6606375f88779e1b4f085f0f6649fcef101bc9156a26cb324417b1c87fc8885d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBSMU5349878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd664c48200e1ba2564b0bafa2aebf85dd7a39d79302c961203ff0194e72e2b5c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBSMU5349885.
No One Will Thank You When You Are Dead...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c1e47f2310f4b889a87947fda823860edc0edc0d1dae9f7cf0175debfc7e6c. 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/CADE60700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219ded1222ca09251e87082acaed14c960cf393b2ee4e027a6bc7d6c7c447a06. 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/CADE60700291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72d564adf586d5b162cc4034e893258e02dd382229c9879e287aacd4f64f611. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CADE60700285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f5b85afddfc028ef6a5444914b06c2d92fd100f979543cd8307b3025d2934a. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/CADE60700288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bd42bda132f5785889694286750de8c7a3cbe349f91a6ef4c21f9d3a450c72. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/CADE60700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ddc12752afd4fb38a91c0a65688215319581ec614aa1fbdaa8761471a7bbe6. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CADE60700297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf958b8f22679e37ec0254a1a2b2d174257f7e77996063409697304e89dc090d4. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USA370582689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8493cf0e0d3a88e11cd92ada23b420731a6f5c73aed6895a4ce6fdd38fdf82. 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/USA370582690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1ad63ee7fa1424ef48dc4cfb4a476c01ca1871ea8e6380d5de7c4fa9f2dbe4. 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/USA370582691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87b47140ab5944c591303737e6ba53d2f9e42a304f2c167970812aa1f886cb1. 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/USA370582692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29501de793846f5670552eeb7556dffc207a62531d2f2d9e33528d6429c69e06. 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/USA370582694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3637aa154ed7622f40dd577f688d831515b809d2972673a02d24a8f8908be770. 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/USA370582698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2d18bb863d42fb10ac74c23b87ffee8193a3754bebb598c90b0244094f1180. 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/USA370582701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870641a9f3d384e5a5051fa05e267dc1f857853700aed9d17410fa64894345c3. 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/USA370582706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950005a19d4fd30921fd89d469f978ba1b38a3a6adf45abef8b0b2dc650c9322. 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/USA370582707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134003333b091e202c7511bce6a431fd038dd395ead9ee485d5e642d78617143. 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/USA370582708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c821b4291346f2806c4e39e8eb35c92a4fc06eae44a9ab344da09ab4763792. 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/USA370582688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbce31f2e4e5671d9940d790fca98710e586f0741dce846c5213df69aa3d8f3. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USA370582695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e06b737553a6f115a38961aeab0a8a1952b3adef9f764f9ac53127e8c54b42. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USA370582696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914db6a11673d8a33dcf71ab9f5054a3b8b8e32eac39131f1641ae6f98e29b4f. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USA370582697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb2f1c91ff75679e1458d3431ce3c34944b14822c646498d8d0817ee4c39509. 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/USA370582699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87439b41e6c137de61c6997bce1ada7a45cb010dc1cedf8daf9f0bd8866e401. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USA370582700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecad479ed861246dd8ac498adc02fcc4bf1a4a7d6667695ac67ba73597abdd5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USA370582702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dec4d246dee7e8df44be341376db0031166a8acdc931e994f66a196c97102c5. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USA370582703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f5225002f0657472cba417b4a05ab86d99e45698fb6b7a22016b85aa4b516b. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USA370582704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3580ff58bf7766a2705f9e6a36a731d141975a5ac69c0ad1b42662a0515f8688. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USA370582705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf806eae6ae413b4d573ab651b4fb49db6b36d202fd8842929f0cc29ad2ec1c14. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USA370582709.