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 0x808688dc0480051f7a3be2133b3ded9635020b12e967a787177b053699ca62d3. 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/d865f0d3-068e-435b-ba3d-724955bff1df.json and https://artists.proofprofile.net/proofs/artist/d865f0d3-068e-435b-ba3d-724955bff1df.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 0x6f0105f9353b4143da6226aac3a8f18336d6d5aad636b347261998b22558dde6. 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/QZHCR2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4132e4fcc3c47ded26bff89f558405c461e1697f41b0eb6cb64eaf1a2bba77. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHCR2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6086b1b65fa5b9ec35d9987bb88bcaab6832ee73f17b50a5fcad21ffcc35e863. 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/QZHCR2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89d744ade2ade5c4ad8b34e81429c9e0081fdfacccb02d10c95e14fd97c564b. 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/QZHCR2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad03186e398b266509e41edc4f1a413cd3a9fdaad41dc692115a073181ee28c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHCR2100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94824b440aa3af25d033cd46942fe5fe17f2aebaf21e59c4ecbb068f3f49914. 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/NLRD52302477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c54723fa078cdc1de06828e1cedf4954175e40a22253994554ce2380f593aa. 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/CAUM82000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cef35338585b00c66badb95d30675fa0fe7c30b075e3a60dd34ce68ae15bb33. 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/QM6P42447095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77806c6421a58eaa72f3e0ce4901a4d2d0b5685f118612dfa4b966741eb13345. 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/QZHCR2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03cb8a18012dc2e3dc8f86b9ddfb8b75fc594a6caaab9c556130be3b2688cb4. 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/CA6D22300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d38ec76e274ed3979ceb902fc19b83895d60d25c5ee28fa03756eed7e0d8b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHCR2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680ca1f6400c9f927ff4267c755f719ea7d172a1ffb8873b795ae34de24a4299. 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/QZHCR2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823d9a8e6136968c5e396ae05f1530686a493c31d15433d660979854fd126b05. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHCR2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960e601109f9279538b39793e4a546c5438ed1182fda65aaaafdeb5ec53fe824. 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/CA6D22000235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a166b444219e2ef0602a2ce720592b7c475cc70f3211863162f86618a5b2761. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHCR1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa5d33f7228cf39c1d5a6fb02917f70107bb51d1b5db8043fa0464188ebbd8f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHCR1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfeaf9ca6fa1dabd820488695a327d541eee4bdc2eb63ab1493054666c38303. 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/CA5KR1923091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19ea386be73db17b8672b5129785f7d2dbd864caa784d015c0efddc41dc1419. 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/CAUM81900197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9968b9eaf0d4fdbb96fa9b5952926ec872944f25d54e5e9772f6886005124c9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLRD51831630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda33bf24d80f71af6bdf2409293b42752282d9663314aceba662dd88f97f7f8e. 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/NLRD51831621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ee9e540119bf7009ba26f2d4ac8085f8f2c07de7675a4177ac16879d90e548. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLRD51831624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ccebe2e4b9a46d6112b91233659fede8b2899240bfd6a3f2d9561641a68df3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA6D21800188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19ea386be73db17b8672b5129785f7d2dbd864caa784d015c0efddc41dc1419. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAUM81900197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5b024e05c6b3f7ad0f1f6766e1163dc3482d30c228a94da890ad872b5ca16d. 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/UK7H21500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35f66ea3bcb255a0f085f019ae965c3add21c7d2945a2cd0b4055e86ff9eddc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UK7H21500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf1501ef8f22c760d0e4ad707a77ba9d06ed1c5cc63d6e6127cda08a5ffd326. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UK7H21500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2609e89358119c9e2dab6ae386a364b98af5fc23742aa1ecbb33849cc3581596. 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/UK7H21500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823d9a8e6136968c5e396ae05f1530686a493c31d15433d660979854fd126b05. 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/QZHCR2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c251770fbb3c20f6e20f839cf15ffcddc86de84ca273fce2e496c60935acc4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UK7H21500118.