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 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 0x2f168c5257c68a00d2de5d097a8baf30030f73aeec081c74faf03c05d39edbeb. 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/eaf69288-c52d-405c-b0cc-70ddc210a979.json and https://artists.proofprofile.net/proofs/artist/eaf69288-c52d-405c-b0cc-70ddc210a979.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cafè Marocco Best Mediterranean World Music Vol II
ROAD TO SICILY Typical South Italy's Songs
Margaux Wine Bar the Jazz Collection, Vol. 2
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 0x8339d87bd8176b1de4b3987f2c098bf85445e020f8228270a91b3f235fd3b444. 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/IT7151386920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeca4159c16329034dcdc040558c6428e43dbe81e25d415230d5897799ff7f30. 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/ITXPI2500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e66b95b5ad5475b36b6ebc14448dbff9fa449dafc5a513b9aa861e880c17c1a. 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/IT7151173426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036c455e37ae856f054e324eb411561012476251ef4b4ebd279b4540fd43c760. 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/AUMEV2550479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666dfa911a648d78d30dead45b16b46815147637e23575282c6b132d023c4db1. 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/AUMEV2535011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eb56837f6b28436f96248e53f2bee361f77038175a8609b5b0fb2477d28a1f. 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/AUMEV2504806.
O Christmas Tree (Piano and Strings) [Oh Tannenbaum]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecdb6316001367ec995cb15781eb626ccd8186ec3d8e5c8bbe4cb87a26a03ff. 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/ITXPI2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1535a10ef5554a6691427ac41a2ce1a7c8f59d97cab7c79095a0e787a4934e9e. 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/AUGBT2448179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db1fb61442d1941ebf4d793386f57250340c4dc50698fb199e746870401f5e6. 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/AUGBT2409877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e597b242126bb9bbdf9008b62c2f787fb2d14970d3c4ea1142e63e028dc99a6. 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/AUGBT2400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b24825f528390b24dd2aab496c0dcc901be7265cc3538141ec4e892fb862f0. 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/AUMEV2484535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42ff0bfde0f48c3fa1ff6a142627b8b578c113e7cad3863ab4a7480a19d2efc. 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/ITXPI2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c299787175cc49dc6182e9771c7bd7bd3dac48f669b1d28186a5df3e3031bb. 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/ITXPI2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6cbd8176cf63d6eea39d1035bb3064627dc9865cf803dcfb54265b3d90b0bb. 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/ITXPI2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ba7c9e5f05573395f9b5b2cd487536dce733be8bb99c97d44300df9a119eef. 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/ITXPI2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa928b85225e7399f4322ca76317c767454861f1f559348efd02dce193128ba02. 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/ITXPI2400033.
Experience (Piano & Orchestra Dialogue) - Entropy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad3898a4f9901f7f66e5f5338e3768576ab3ce2ad83e29e889e909b1d22a64a. 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/ITM161001438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641562bb7e772c567aba5c409822aee24321e1ee73175fb07f648c9ab789c528. 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/ITM161001446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b645784654b3c737eed3352f497ebb5e9bc5a4f15fccc85554a587f01b55a23. 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/ITM160700071.