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 0x7312638cbd225286754496d5759af9551fe3b4e81a6662e4e8e9ed4d7ca0b41d. 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/4cf94325-234d-4456-bf63-31b82373ed98.json and https://artists.proofprofile.net/proofs/artist/4cf94325-234d-4456-bf63-31b82373ed98.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 0x64764ab4abe7ca043019d390fc68b15a204e6599aef8270cf4737468977cc337. 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/QZHN32353771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27483d3ae5be8a4487dd29e7b6c5998e961ba32170adc79508edb23e8cedd713. 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/QZS662199022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3220630fe615b2f87ecb96710fa426249f68ca3406c006d60b26a695b1d62218. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ATEK02177279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fee7456ddf79d101d7e46ca1fba5aa235944a4963ffa11ff65ce9757e2119f6. 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/ATEK02177206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845ad0c7d3f94be1ef0445080b1930d8bf4d8d245b103f45d4188b8c73e66f75. 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/ATEK02177208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59a51c482e77d566a4f74fcba089603463a7108a65b5c70424b9beee99346b4. 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/QMBZ92197787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e8aa62e11b85a9c73a93f1281413a7ef6023035dcaf69985d29dc2f10bf150. 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/QZS632165513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c6ab7e66eb0bb616ddcc9852860735e7523a0e5da48648876ce5447f5c53dd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ATEK02177046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19091d27a04d175da750688c1f7fb51c9313f387682578be09d38ae70f13c7c5. 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/USA2P2020139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe4ec71d9f736097885eaa35a2f51458f84580a9ad7fc58f33f70924a5fa966. 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/CAWHO2015290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0384ec2f049409665e67e96c7341abf9265900aa3e85f86e6fbd9d8f55c0973e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAWHO2013187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cdc848ca1c212a2349c83d5e5c649fb880c4780fbb98001ee013fb3f50dae6. 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/ATEK01977016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0499def4a55b45a5bef850e51568a0e5fdc53cc544dca304f081464b0c4294. 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/USA2P1960291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c015e65438cb53a7e8de96700847ae736e15ec4348a7f6c63f1177f4596aa1e. 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/USA2P1919889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb7b275662f809f074a93b323ab7b171a9332078563e314ecee98df3b1805ee. 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/CAWK51908044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492e85437d2bdc42757dc1e884ebf2f067a10806b62ab0f30db7168ecbe1215e. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/CAWK51901613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a34c7be713139cf4fc184b934c8087b4919b391e343ede1f642d1699007e58. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAWK51800999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee822a149d34aeb37b520c80b4bc2029fae4e08810f3d50cb597bc28f7da66b5. 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/GBSMU5620699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e3da747cc0faaee95123e9b0cc84c1a0cd32f2e8b40f96011403612922178f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBSMU5362242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb741d46c2f972b5e25b11aa78c58645c092064a637fe960a9910a0f93b703. 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/USLZJ2084043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76941b264c169f1795666df76d3f61c9d15a6e9974ba173f73e373a6d9144ad9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB52215166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f367c91e160e19273b31896e10f4566a799d6980607c5a52250d188d5d0091b. 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/QZTB52215167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cc405ae865e32c91df6d841492fc3be03ca29edd697a11e839f77f9217d3b9. 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/QZTB52215168.