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 0x26deb8f8f60ef0ce70e3dc8cb0103eb39a175dab98a935014fdb7ee4ed96d669. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/983f599f-1bc7-4458-a465-aa015b29b574.json and https://artists.proofprofile.net/proofs/artist/983f599f-1bc7-4458-a465-aa015b29b574.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 0xf31baa9b8aff6097d1e16dddcf969b89bce73982014a85a1cbd06d749246315b. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/SEAEX1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57f7ab98567ea555d0bf14c958592afa4e17207ab1548865fa61b079f932382. 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/SEAEX1500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9281f1d5027d2be1246f532b16f785427bb88f8f53bba943399d6c0a6eeb651. 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/SEAEX1500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f0c56a80bd1e4fea4c465c929491282d15e706f3fc6c4467be76b36d3dd096. 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/SEAEX1500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786a55fdb384eaa93bcc39d3b2a513b00e1fd9100fa89911263cc771e7b29029. 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/SEAEX1500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74b8cf674e38aa0bf041cb0b7f1068e8a8ce02e5a2f2cce4a5a6ae8e08b1def. 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/SEAEX1500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b0b540a824087d48049bf99953adfd046b86624ed66338dc3c72556b2c250a. 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/SEAEX1500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e533d097e3561f8b28c1bd0101019f2312ef299245645293f85831afd53016. 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/SEAEX1500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daceb7483e9cd244bc17385547b2e8c6186f61cf434127f68a7c7e80580342f. 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/SEAEX1500020.
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 0x8823667c0782c97371fd9d54a348c86a8cb7fc2b85d3fa45612ae08a8d513f2b. 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/SEAEX1500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4aa576bdaae43d3605b8fa5e3438b390a4c045497266b21e2b23117da71a9a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SEAEX1500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59752a59b8c8d8dfa86b8aa7b56bba4f5b0aec35c51f53d876ab19eb26c5ca0. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/SEAEX1500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec7515d5270ef9a2604d82ba6ce49e3297e9278d2e17732858d292f995034bf. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/SEAEX1500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4306ecc0fb883b410253b5de6956be6eae18a2ca90d6e75c9efb8ad84008360. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEAEX1500130.
Leifs: Edda, Pt. 2, Op. 42 "The Lives of the Gods"
Leifs: Edda, Part I: The Creation of the World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a0e7b06af649d3fbdff49c9f9327995bb590b1560c127289c4c9228903e212. 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/USSM12211675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a2196098a5c3af8ba556cbd0b269697922ec5c94241699cc279b5aae901f11. 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/USSM12211676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30d457590c20f52f7535cc180ba8ccaad9f32ded2fafdb4788fb8d3d3068f97. 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/USSM12211677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac7271184d6cbc4f86b7ad86967e8170a1d46c2e33dc797e8054889a69a4de3. 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/USSM12211678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645bd6c6fdadbca07b90f53f156c5b097005fd29696db94ee820405ab0dd0971. 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/USSM12211679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1db56e3999dad181c617456dac21a0b1a05209b5418fbc11b1f8ad08b0e5dbc. 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/USSM12211680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2982e07f970bf09930aff86b4179479a987eba5dcd69ff1335ad7435cdb745. 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/USSM12211681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ae6ad42cf3ac03b8111a4ec5bd1db3622b19818d1c603b6defa3237775a85c. 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/USSM12211682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60470e1f239ae1bfe8a8e49cbfe37b63f1e2aeb657cfa5961f1eb6692942aa17. 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/USSM12211683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e6ffda8a2a3200b79cbf63019b7fbfbb1de858d429efa29d5866fe25eec331. 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/USSM12211684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb10207b49e10f15f26af9a4b604ad9aa4ff9fc188819f82590763ba0a823f3. 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/USSM12211685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2badf5f81e505426b58d6f72a8159c2483d3b49cba61f9674d1b4d4db2a7bf0. 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/USSM12211686.
Leifs: Hekla / Iceland Overture / Loftr-Suite / Reminiscence Du Nord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f75911ef8a15b5e57d58bf04004d7dacbe3b44deb017189d8e951cf65f3ba9f. 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/SEAEK9930020.
Leifs: Lay of Helgi the Hunding-Slayer (The) / Groa's Spell / Landfall / Iceland Cantata