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 0x0c67a141e7c7820e049068a37714f065c0a2667d91ce52360aae8e5c7219c5c1. 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/2edd840b-feae-4e86-adec-3cee1fe04593.json and https://artists.proofprofile.net/proofs/artist/2edd840b-feae-4e86-adec-3cee1fe04593.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 0x9dd70f150f2681d889018e6a2db8b264b8ac8c489ab5bbf039471362d247370a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCADS1836367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb254e9f27809b6bd46e3d3fe7ac94b9e245bfa18cdfd2ab99350136208dd3fa9. 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/TCADW1859162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2b12660ac641c8c2e12d758f52c843ca378cee7323aab7f3f82b7bdf13b88b. 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/QZKSK2130025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd951c701fbd685a40d7bb783fdcf4be5058b8aca9017e9bd2973228bfe7a945e. 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/NZPB12202291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dee225f8c36a910e02feb78d6b0d2919be2b26c309cdf6cdedd99e3c42336ca. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:56Z), 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/NZPB12202290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86282d1d71862982827ab51fc3193238fc914771d2b8e6664822ce5e469d5d8. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QM24S1912120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc801a8c84b9bae737fd01b7c5fe5501925f4f8b9d44e9afb791d9c83bb5340b4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAEL1988458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce00ade23ddddf96446297e8f1ebb8bfcf27fa3d4fc5a4b9f38662a2d7b44b4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAEM1943676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa0686eda96956c075ba9373b40a68c3902f7f875a908edbbce6af92c482f09. 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/TCAEU2030430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978d387b0454ee4af9c67ccea3f3f42ddef07e74cfdc9d80edc884e74659cf6e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAES2072607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc07b4f9284b5c35e3541000fc82961013a573653473eaeeeda02127f54a2d42. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAFP2115250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd19ece9cc2d69dd4a120f550aba68f14c79cb75335de9bde85379cc473eaaf7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAFO2189839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad79d11c59696383616c7c0cd0cb0dc953d6a10fd46138a1c7a41ce64f48650. 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/TCAFO2189846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4217f2667729ff44eba6e361e2dffde9f7b2a94f269627c21ac3053c957ac60. 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/TCAGF2216753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb10e978e6427a843b37e9f581acd5b0e3c2cfbaff916dea3fcbcf72646b054c. 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/NZPB12202882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fb8661ef837eb331d4db1e7bd7d955551a250843cc703f1a8d6f3fa4392fb7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NZPB12302264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4e2d3b18bcb7fc731f958f303afae7946c4915e61e67f7317e75b534ef66ec. 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/AUBEC2222892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515f7a4b47b0d7f767628cc8e88f1b39a23a41f629ac84b76c9d5df842d0ef2b. 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/QZDA62174290.