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 0xa65318868c3d7318bed15fd52bc72b4f61e784d8a0b66c0deb36c4c1348d49f5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d1f0fd7-ebb0-4df6-82d4-43dfa089a0b3.json and https://artists.proofprofile.net/proofs/artist/2d1f0fd7-ebb0-4df6-82d4-43dfa089a0b3.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 0x2bda8e40e3ab47db16060cea5a9b11d0547e89d4289ee2b3dfb0ae694901f064. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/USA2P1633967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce4b02ff50bec09fe964bc9f2f03341b81c97463a4c2006c4b20eb01d0fe86d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA2P1832031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf668de7df1c6e89b4beb8582dded2f184b927ea83cf6b3ba6811082a28f42c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USA2P1934686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e49b238c87537b8d187718f5af0fac02b468846c0497eeeba09bf13b572424e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USA2P1934685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054e95faacfd65158eb2b7812955d1d7e318a6fc335c74a0c5110c3ab354630c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USA2P1934684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85efa6cbfc91de74e156fd09e25762e59a693c06cbff74ea4f1fb508595f2074. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USA2P1934682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25c81a449b8152a352eb7da8bbca3a9b5e627eeb9246971965311732bbf55a0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2P2039424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112d5836216382d7b45267b7801edb392c21224880e00ef1b8b0054383b685a6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USA2P2039425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17619267a9aa7ee0a01e9fd55303233f2391f46ee070beab97cf4bfeb7d2861d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA2P2039427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bf595a08eec60ba1c623149276f23b2ffe56e3181ea010c05a8ffacc9bab54. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWDD2253868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b77b94b0a4189fe8fde15ff1201f46d2e5e539dbd0ed2eb085fef33610c6f0. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:30:27Z), 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/QZWDD2253874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6060f7e2e6b03e8e6bf72955f9987cd009178cc3d34a910e7ac3f8b4b55eedba. 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/USA2P1918632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aeb8eab476df729a9569a0f54200d0cd7e9246c07e3af93b8e7f4f559e673d. 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/US3GD3515402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1baac117761ea4c96539899e91ff75e9740df533df42a0baebc4a9267a02c44. 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/DKZVA2200090.
One That Shows the Way (MantisMash Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267614d37be487af1e80fe92f07f8cf3bce4200c5c19f3b09d7ae09407057e38. 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/QZADU2011710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1f491502a90efe69ba0dcd1117fac82a9611555f7305999b89e2ab0958087c. 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/FRP4A1663006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e3c62a6819a084870883b3bebb8fc6c2d275c17bdb5970300ec1fc6a9f3a03. 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/USA2P2209557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d5e098cd60b6187ead0f06c63fa1788c224e58f668778c37f4b88a7da48a85. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DKZVA1761384.
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 0xa909514a1a7c1ac3cece890b6637d5cebe14d8ebd2cea35199df426e496b1bcb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USA2P2130696.