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 0x8a4ff5d0be8e9c156a20bfd0f6d841ce7d36dc1f9f73ca515d23ffba55993374. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6684837b-1a73-4519-9965-8829cde18941.json and https://artists.proofprofile.net/proofs/artist/6684837b-1a73-4519-9965-8829cde18941.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 0x9bd16295866875e7319d2145370ea4501f77c18e381e4a8de3115a9140d18732. 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/US83Z2346724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b5de52c4fcf149aba737c4e99b1fe9fbcc6e72bdde02111ad984fee1ba4456. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US83Z2302961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a2a9a66b68420bc1f9e9115205d94fc8b1e0cdef33192b8ff284d1bc808d43. 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/US83Z2208823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e729905baaa236f8a861ec5d4834abc48a34e991266edd0a30ee05b84b464bf. 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/US83Z2130797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f5593e045ee9ebd042645ec15d88a10050b8ef2c9a420fc30dfb91608b7b09. 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/GBWUL2043322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8952a4c84b443ffc844d3469e50dfcaee2d73c1ac84212e22e87cc9d706e78. 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/US83Z1910973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3e3c4455c6f4ed5e848b1f53b9efb3c921560b5f075ac487902cdacb8164ad. 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/US83Z1910964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6464c0964c41bd6d0f05b8ec3a8d6b848463c2aa5bbea0d20fa752c10b1ece. 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/US83Z1910967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947c8dae73975238153131f7b30aaaa865601d9d0ebfa17bd409a6413b316c47. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US83Z1910975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46be00f9af5516f1d74a668896bc4fc6fffc460717678f025600f4605184e5c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/US83Z1910963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de1447b186f542230c407511c2b1269f2ec0cdba13f11a5fd77b29c5aa946ba. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US83Z1910970.
Mixed - WAYU Various Artists, Vol. 1 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdd2206b8f7bd8642acbbefe2a74c6fd41207709ee6faabab1dc476bc0ae469. 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/US83Z1917520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36e15b3f156cd323c02a45dfb7b837b64680c83f9d050d498d696ba6dd3c469. 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/US83Z2044924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcab55fd0e97295cf1f068e8580c7b8c1d2e06c363c3e56a07735a08e0c90921. 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/US83Z2135915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbf182b31617fef66b0a03580d0e6ee7118f4e0522e052f782141ff9f0a67ba. 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/US83Z2135916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf692dd6f448e2ed36d15dffbf0e1b980ae1cfe5d1b9afd7306ac4b3343f15ae2. 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/US83Z2135922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e044aae0f9c766610df152069c655758c48102c636f457578b376a66dd69d3. 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/US83Z2038945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87d721e3296356273a075e69d84f36d963a59baafe59e9fa2156407b27b9fa7. 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/US83Z2038946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda116f6646f27bc31c0a7984bcfbdc8aa4f26f40c11d772b8865172a6bd813. 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/US83Z2038947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75ee01e6ee6581e37103518ce231d638f12b567dfe00c3fec5997285463dbc0. 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/US83Z2038948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b54b6dafeaafc858796e4258101af32d92ddd009b8effd56d2cb3b8208aa6b7. 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/US83Z2019510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced22a38055c8076e6bbf457b10416d049bd3acbed7121535586368b82fca8ce. 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/US83Z2019502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4441234877d65ef802eb2fa17c8c8cf11bc6794534943897e07ca5e652902ccd. 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/US83Z2019519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb69d0433e8808275728e4caf277fdef81892bc29752501cd1305c4544fc9713. 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/US83Z2019522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2117a1bc7c242384d59044f5de74c1ad0415cb87d286eea99191a9d454bd4d3. 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/US83Z2019521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ca9360d850029eb17f65d13b580afd8188a32ebcc2167c7dd025236a2ea2d2. 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/US83Z2019509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc6f527bf2d1051327b20b73faffe5b000f661067ec5cb757359b5b1cdb5311. 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/US83Z2019518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52cf24a730a1929c4de8a149cf28b9a0100fd19b7d76bf338e025c5b3798c30. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US83Z2019513.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e986209d274df046f04b614d81d3ec154f1ceb12940a37882e558919fb310c. 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/GBKQU1994830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dc9d8e88888121ccaa33591e05d47cf4f5a9a3131c58d12ebb9f317b1e17b9. 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/GBKQU1994833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567eb1ffe7701f3aa6f76af8e5268e757fe0c1a94627c0ae3a6cb6ba1bf2a912. 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/GBKQU1994837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c38b2aa4e9188a9185c8cd8310143e9ec031620ab08c624e1ce10571dd32e47. 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/US83Z1914988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9288e1c133b427944451028be47b1f7297cfe7a059773eda47cb8f781f9d872b. 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/US83Z1920155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5c58e0289499f8d16736584027f119e6b2a83b6ec1bf7dcc20234a1ddb77b4. 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/USLZJ1981842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04d45d2c8d4b28040bec8c2b8bef82445c835b015f2c18d921a410c8dfbce44. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USLZJ1981844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05668b018bfd119f7d8b35ec592ad8c3abbf60647af658cb3761312d11f9af96. 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/USLZJ1981847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841e5a7b9da110f032ecae4ba8958634683b3892611b6b803fcf57b791e141ef. 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/US83Z2301808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e1cd35cf42df1693b09728c5fe8f62ffa269a60b1a66d485ae86d40078ddde. 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/US83Z2234948.
Hoom Side of the Sun, Vol. 02 - Mixed by Joe Miller (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9575ac60e12f68a047570111a4c1e4fd9eb07f648939246eb4687e2a8412b2d5. 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/US83Z2026164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b012c541c9afc1006162840a556864fe3192239887328c035c22eae911c6c2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US83Z2026151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf857d51ea420057e12f28006e70daccf48ca9f0619911f7188b071bf62349655. 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/US83Z2002339.