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 0xfb247547344f610e1e8b39ce47515642db55e681172c81c8239ddd81206c2c96. 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/aecd4c2e-b7cb-41db-a924-720714026070.json and https://artists.proofprofile.net/proofs/artist/aecd4c2e-b7cb-41db-a924-720714026070.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 0xaa7e2cf235f05f465f463d97e5899d6f0304f43f647888624fd34668d6c72f27. 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/BGA261359902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806cc1217553ad5527932b902015ef643c8b6d3e2a304b98538ac7483b12a469. 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/QMEU31808728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3472b71fb790b19b332ca29992b28f0572ced384c9456e5546dc589a0558a10. 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/TWC230515101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c784db9130d4ba1845a628b317e24ce0e1a434ccef0e781dbb915da6d00b6e2. 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/TWC230515102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd86ec241ddb3454bef74c0a88cf2ac1fb5a96227dfc5c4f03c8833407a064a. 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/TWC230515103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd9d49343c9aaf9bd7607d1e43add464928b2ec36d398265dd4bd452b37d96b. 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/TWC230515104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466bd379ac4e34daa6feab7eeffd1c42c9f80e3521203cc7845eee63d80d4180. 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/TWC230515105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02561e0d36256cf9443c2b0725fe7dcf3c8f50d6c28ca67aa2a2008d50289755. 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/TWC230515106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eb3815b542733d257999fda0ccca189af7b4ef0e7aae614b42b998ee8fbbdf. 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/TWC230515107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc55e7e74c675383499eebb4c3d2cfedf1668240ade66dee2129c604cc51525. 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/TWC230515108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fcc7068ecf111c0d872a26d5f362f450b5a2adbdd215abff5e64d864222346. 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/TWC230515109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd6bb7cee68233583cd1fe09f9e8afdb1cf9face44ba5d490a9c969d96829a. 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/TWC230515110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846f4364b0bfb8af456ca9bd7d0355c7a3b5ee0500354e16a93ea0fdae8e5139. 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/TWC230515111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ffb879c686b9818a4395de9f862c6d2621177d3f73275469b0c816b0c8a2ff. 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/TWC230515112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a479d7df1d02722b7da17bc4d8d32d4ba6d8b1cef11793bd9effcfa545b969. 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/TWC230515113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2615d3d3bc51e5612efb70624ce39808481347e0e77aa44d90df8dda874df132. 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/QMEU31806762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4049f0d2cfa09cb7ea724d4b1ed8415a19bfa7ff37b38f57d9ce3c9b712a545. 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/QMEU31808745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb282746a7d93a3a053dc3634a743cafb3227c019445ca4fc5fe8525562b547e5. 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/QMEU31808746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6b62c4b8b6ea843dfe400593512d71044d3ab92c86352178f064c2c74f2097. 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/NL8RL2425918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887377dea7c370e1a2365e02b060f3440c17bfac764a8a364a96e7f4f4c5e4e2. 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/TWJ450700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17805728ffdb28540ef8021bab3dfeb35b33b26235160ae0c77baab5c0706594. 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/TWJ450700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e4498fa79c05fad6e170fe78371a4fe17679d4bcadd491793926e42a8e1017. 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/TWJ450700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e9cc5e34939394ea0d5c4642eb80a2e0889dddd87fb35883c2bdd172a6a31b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:25:22Z), 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/TWJ450700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a84c5ce18e2f278a77cd1a475fb3d60ea7ccc0c9a521e05f77ce08f7f0f2633. 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/TWJ450700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd19e287a1a1f1326dd29e5b3e6bab4d3c6ebbb47f42d9446b6b082d24fed130. 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/TWC230519601.