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 0x2c7af2a9bffa79c1addd293365f332b7570739c5fbbe74f267c2a7cbdc770789. 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/de72c954-4d47-4aec-8048-3c61fc8912fc.json and https://artists.proofprofile.net/proofs/artist/de72c954-4d47-4aec-8048-3c61fc8912fc.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 0xca756eb1f784a320d2eb16b099258b74546bdf35705a9ef7fa43e21a7216ba88. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZGLS2301037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e6e12a2206c4fac4e35c4b76689d0eede6b318d6c77f0f16cb3424eefcb586. 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/QZGLM2107557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa813d60ff98ec9941342e4fc8f960c1522e99e6084ca551572925a4b56970509. 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/QZFZ42046103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1f818ba9a2b72f1c8c368654ed018729128d5f2ac7de12ba6cb2be4c812d5. 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/QZFZ42046108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d764d6e8b62f7354565f537c99f490e2f2c3d7356a7b445782bba8a4827033. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFZ42046109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ee6782fd8182b1ead94de80477fcb3c37bf7d1d7d1c7138df087e7a8540511. 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/QZFZ42046111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5ab142bc1d17dc5dfbbe8cded8b15a1b03f7ca16c47d27bb26afdef5f33ae0. 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/QZFZ42046113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a5b76aae14ff1d2e7ef0c4fceadc1d73414ad00604d5b2bc9139f6eb403b4f. 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/QZES71870426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458e75af53a04c3f2fd7e5ea07f599e3e452679b622c1addc05c6ef1bfcb8e4d. 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/QZ9JZ1751177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f05d32569286153f6355cd93cc46c0c7e475392db7a1eaf3b6e11c895fa4ed3. 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/QZ9JZ1751179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffeda07ca6a4e594e6dfffe2f12b29035d2e28bb02854d064084292fbe5a2ba. 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/QZ9JZ1751185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7e7290b66b8ff1369c246caf3fbcf7682e7cd0c507b5d1241eaabf702624d4. 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/QZ9JZ1751189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23bdad4a8d9fb54b65b13983646cf6753bec2e79f6cb792f57b92d3e8f5afbe. 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/QZ9JZ1751190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb5772b83577583891450981e2ae030d740d42b02d779bdfb7f2d6d210b4ab8. 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/QZMZ92358349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e53eb0f9a4bed130c165481f31d99a4ba5394431c3ee10c5dddb27719ec160. 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/QZW9L2220687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd136acee9d2c2ff795a1499a3559ccd7c95330c818da0fc5985ac542a255947c. 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/QZW9L2220657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd89e48a078eca044f62852f2329accaa5eca97fb3cf4ee7568e0cf5e27df89. 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/QZTPX2270051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2d076f192a5b9a700c92dd4f72496fb48595b0dd05acf83b641f7c61f00a1a. 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/QZTPX2269959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5306a8bdf762b19690028ec048858d089757496d719c57acc1239e9fbdda46de. 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/US7VG2493732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b33e01965973ab0cecaf83ff6a276bd34dc3b37d117a34ce554849317c6cda. 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/QZGLM2415175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d99866046478485559d47245424394c9a0c10123e1944b9eec43b5fe067596. 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/QZGLM2415164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438190be9e070f99e5de3c789b6cf6b3134bfc4a11923287d7636d92625f5a0a. 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/QZGLM2415161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe574b78f152679ecd071f6e98b83d51c2508a36d9ab30d0bf084bf4f5eabeb13. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:01:51Z), 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/QZGLM2415113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43930e3287746f06ff8c5d75ce6fb9f580777ea1d8357f5d4245141788972377. 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/QZGLM2423100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95373832402d54d759d03a0f58ad0e49a0234bb7f7fc566d9063d82f18082712. 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/QZGLM2423096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95373832402d54d759d03a0f58ad0e49a0234bb7f7fc566d9063d82f18082712. 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/QZGLM2423096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43930e3287746f06ff8c5d75ce6fb9f580777ea1d8357f5d4245141788972377. 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/QZGLM2423100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5306a8bdf762b19690028ec048858d089757496d719c57acc1239e9fbdda46de. 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/US7VG2493732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1059b4524009f50ef29dccff1268f9adcf87080db561095ab2fced1747b231e3. 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/QZW9K2442301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617aad8e84f39196ee5ceee56e01fca7fbf33a556dc282fbf4b62b58bef4fe4f. 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/QZW9K2442302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6ddf0574451f9abc0563471ea355ed5848bad2ccc101750deec61ac137d3fa. 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/QZW9K2442303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9335bd7db80552f9da0abaa88886fe4d06fb1a047c52681900a169bb5cf7c97a. 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/QZW9K2442305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e1a60493327e98f5640f17a5e348cd312389f94a1763fb7460193243d111f5. 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/QZW9K2442306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76aecb61a672d67d6c61b28fdfd1c2f4700313ce2c71c4714c56a64b955d156. 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/QZW9K2442307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c21ab1add5bdcb91d8272026032541d7e9b44392b692884619449ac7d3504a6. 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/QZW9K2442309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62804988f112946862d9b55253a6852b63fbd5333a661dd6b01a313c60714b8. 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/QZW9L2301405.