thumb|right|260px|In The Country during a gig at EnergiMølla, Kongsberg, Norway, 13 October 2010. In the Country (initiated in 2003 in Oslo, Norway) is a Norwegian Jazz trio comprising pianist Morten
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 0x151ee84d712a4756f8c723ea273601174a8d0c04c3630255f39c743014eb02ae. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abeee369-b896-449e-8869-7878dca2f73a.json and https://artists.proofprofile.net/proofs/artist/abeee369-b896-449e-8869-7878dca2f73a.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 0xc927521056ac6c3637e7a2253ee228917a230784845ac2509ba1cf1f864e8cea. 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/NOWAJ2410010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb3650c2ddb8887d00648944500060ab348a594aeb6efb7ca8ac2e03ae41e4. 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/NOWAJ2410030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaec5a84d6b697c8cbebbb631f04eef23e4c3c87f0307a98e3c258cc5db9fd8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NOWAJ2410020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb3650c2ddb8887d00648944500060ab348a594aeb6efb7ca8ac2e03ae41e4. 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/NOWAJ2410030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9019ab6360206efac43225e10b4c91ddbea9881d2e086332fb32e60b87107eb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NOWAJ2410040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a9a2127621ec838e40cba43053d285c4e77969b640f21e8e35499de61d0bf7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOWAJ2410050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643a01c159aa7c4ef3cf0ac72479f3662823beddc042a74cd4083a641ffea1c4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:11:28Z), 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/NOWAJ2410060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d5fdc73dd98f17efa46842fa6f8f2d87edfc1b53f8421a49ac78bf9f19d788. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/NOWAJ2410070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f344c7baf11a5c9dce06d38d4895092be07b567c65d1547224431d590da94c5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NOWAJ2410090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef5069f3f8c0c8ff2dca9ddf6943ad06810c1284aa936e795d6c39e46906415. 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/DEA891500370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38bc8b1b199e20a4311f2e8e2a57c5bf7ce65908ab1b92843126c83d2243361. 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/DEA891500371.
Sometimes I Feel Like a Motherless Child
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc438a4503a554be485a4b4d1ffc624839c24615f9f79a69a24acb0e9236748c7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEA891500373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f888ec0f5ccfe6450dca67f6438da5c1352655ea7fc1d2cb69f7dc98b971909. 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/DEA891500374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b549ffbedacaa168bcb2f2cee8d5996fc19cc8a3827d8ec4f35f9be01062964. 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/DEA891500379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01539a714eb38b4596c0d6ef4f4c2755cdc293a7c01958e7b7a98885abf67e99. 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/DEA891500380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae88e464ff35d1de53a296e7ec905efc2d34e73c510a5654ce159122864a004. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEA891500372.
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 0x9bfd2f8c04e875f226713510caf668548ea4aa4423a3405ae4fa3771b9a42e90. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEA891500375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b6350ae36dcf9ee412924aa473e8d70ad63b8f60112d4f9799b095d408a4db. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEA891500376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e2cb763b815028d708d4978aafd515023f7729b9abd948fe0b3a1a90d794ef. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEA891500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a8c5e07e6847551467131b5101f370c2255455f649feef080664e7b51f8c3d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEA891500378.