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 0xf151165ac675f322cc56539856254c1a523fe30f14605c013ade3697f13289c5. 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/c0b19f40-e5da-4022-ad29-e498e754fb73.json and https://artists.proofprofile.net/proofs/artist/c0b19f40-e5da-4022-ad29-e498e754fb73.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 0x78f7571e65d1f3217d670b5d8a120de9e4782101ffda8bdeedd0f9539648e3dd. 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/FR2X42393916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225bfdd6c830315a0a94014e8fb8246226b213767c50e90bf4a927bbd0852979. 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/FR2X42393924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8bd8a0fce85f084f7cbf1b6e32a6ff958b223bdfe49d9ddb746ba6eb09937e. 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/FR2X42393926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7faacd17d76e8430b1cdd383de42e52fc01be45841009b313dc8af769b278a4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR2X42393910.
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 0xa80090667bd3ceb83729f6f3fb38e3e51fab7c3e9edc31481ac5bcdd743a32a5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR2X42393912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b5e9d166cde458da10efd7777ee1bbd38331bb139e3690ec5f15c1c8146cf2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR2X42393914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d18cd7e61f060fe61b631c16427525be18a898cf2f012cc7b2320215c485139. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/FR2X42393920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dd133e201a71b7f1a8a65e42fd38ee5ac31f22f504f1d04f4223e4a359645b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR2X42393922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a50658455e4e6986fe2b1c17b49b2db2f4de47bba1aca71b4b1ea2966b1808. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FR2X42393928.
The Postman Delivers Letters Whilst Listening to Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856988f4802ff5edc8e8de064ea7c5ccb0338d7403ef978d25f716599a4e5f17. 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/PL6B02311127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b65cb6da9c51480c5a1f4e9a3c226af063cc20b8490d53fc05d18a6e3dfe5d. 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/PL6B02311129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8c3d0f566ab92572508516894c2807f57bf141fe90be6cca1dfa9c3bf442af. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PL6B02311126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74497d5b68ef09af7212524673ed8343bde32642c4efe2e177f678400c8962b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PL6B02311135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb777ea8b9aca50499f6111069aa7255610b4d46e099134537f46cd747baf77. 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/GBRKQ2350176.
The World May Be Ending, but My Love for You Burns Brighter Than Ever - Slowed and Reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ded94570ec82150dca205381059bdf9dab9dbba66be6865a9f886e4255bc4bc. 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/GBRKQ2350221.
The World May Be Ending, but My Love for You Burns Brighter Than Ever
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223fb2342c1f6d4f7ec1a3d597ea1b7b1f7e33d6ccbed901e47073dc726d7ebf. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBRKQ2350120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496472e1c7ced845ef140d5fd8d982179ad52963b15851b9a98d542d49871e0b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBRKQ2350191.
The World May Be Ending, but My Love for You Burns Brighter Than Ever - Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639a2dac122fcc3895cee2ceb4fb789b4de87f176966e09bac327a6ba37296c3. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBRKQ2350209.
Hjorten Væver Tanker Om En Flugt i Dyster Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5d1e626d07be314332ad761c8cdf060e14ce02f669ab72d296f693cda98325. 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/PL44J2499879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c0c64401cd84b032f1aa7f518b17b3e39996418e16cf29e83ffbbb5fade21b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/PL44J2499870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817d3e49a9f0aeca3f3729c0b1cc76b669a6b763edafcaa92bec86ef1a9f2c0a. 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/PL44J2499872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b4db0f82a414040c3dc33d24234eef35ef6f130743ec9342c0f3c70442c4f6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PL44J2499873.
Eleganza Jazz nel Contesto Urbano con Suggestioni Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e88158b565bddcf8f737c4f3a5b7b84ddff920049c86061779ce5f030885792. 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/PLH492401432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fb4b1e68260401f7e8caf45073b867ced8eedc1de3fe05f048dad82d0bf26b. 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/PLH492401433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45490710cd59eb7ccbe70e3eda2e85120f932352765efcdc92260058459abca. 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/PLH492401436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc31acc47362096ae52ae672dd97e067af3191320e90aa036f2b7e120ca5e86e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/PLH492401431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6ba6e1190884d6281da263894ddc5bde96288ada9730fb41416b5973606130. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PLH492401434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc3634c017ae596c6598d7ac4a44fda7ca3d0ebfb30fb7bcd969f95fec2f57. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/PLH492401435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ad1026607015ee152d4d202d2111b7dfaee858787e302f43125c2ebb2b7a1b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/PLH492401437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f902495fba502e480afced6c673e647e9aba956dfd92244a15ee2789a8e13c5. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/PLH492401438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cac39e15b024d6c42509569461a320111dc6f3dd95d03f1636b6449b121b12a. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/PLH492401439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece04bd5863ad65123f94d19b145de90210e5c817230aae50d0da1bd1229d37f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PLH492401440.
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