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 0x3e48f2a84b896fd8de337ff78f56165fda766c1492e30543ab420d69d59bc218. 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/42c5dc4f-3345-496f-9e8a-55b9067c94e4.json and https://artists.proofprofile.net/proofs/artist/42c5dc4f-3345-496f-9e8a-55b9067c94e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Natural Beauty (12 Piano Pieces of Ludovico Einaudi)
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 0x159f1fa624328d2cf2c02d5a5f4ec6a6d4b95908fc5228f718003b1ef7ab55c6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:52:29Z), 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/DEPI81504083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857d6b52686e7ab5efacbd0f185002f002a387576f5cb733e5c083699f4e0f85. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEPI81700160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204c8771e010a110977014a31b095223e565a9c83cba7148a3c5d6862905773a. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEPI81701369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e4d6b7fc1a4e918fbf08c2adcd01d9b2859d05275ea290cf94a297527b8d89. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEPI81701997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aebd6da4d8d1ed4487948a1ec10dc5a45fee4e961d5486e4aba99db88f089d. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/DEPI81701990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe868ea4af56af345dbc3ae73d6814a34702c75e244c5efb6e9eed6424c4b1bd4. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEPI81701992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33ebba7d5ef6ec6b635661864e59d475c1f4348835e777b02494b37ea60dd9e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEPI81702007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5804da92ceaa9fbc156f6883d35cfacdba09a071488f67c757892f5f722378c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEPI81701994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf718b882fd2060386e47f35c8a8fa6c1e8b2de7f70ee5b06d858a5f884c93447. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEPI81701995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bc6ef12df2b8220b34e0fb2b9a03739c3831a45c2a310e496df0ebb2fec813. 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/DEPI81701996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea69f9173907b52385988a11109d35e6021e2b44358a2bdf5f258d9d705876b5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEPI81701999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814e4a1a4939d5582dc0e140da90ae8026c74d2642aaa411c378699676f55b6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPI81701998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a1a8cd94a38e0ec88814ff80754dcfe4bc6ed4fd9417bae502c4314d5d1526. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEPI81701986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6e3a646ef5d157569b341f88145cad1fd7696058df81f27e536e7f6f776531. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEPI81702003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf003ca649c25abead0be667552f07b983615ab565ffb51e8a1908b66974f5d4b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/DEPI81702004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc587ed6bf497d823df46f2a4482de13bbb20ee501ad1add735f4334003dc959e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEPI81702005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f248e2ce66dd72b4af1b5f296798e282ecf5c22119ea1263b194c28ed2b382. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEPI81702008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035cd072191e64da93dbf15e39dca15f61ca314d122e7bc5d0db461d1854bd94. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEPI81702009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf084ffd22183441a8db35f514dc279b4b17ddf04a51a943415f43d32821b6a85. 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/DEPI81701988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c25c170f65a02accf00e76d8c0ac8184b6ab42a43a923c5bdc78ba64495e888. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEPI81702002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd384c91b50d6ee3d4d8dcb1c4c095297993e61e2bc67ecef66c2a85f2b8b2083. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEPI81702001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a1a8cd94a38e0ec88814ff80754dcfe4bc6ed4fd9417bae502c4314d5d1526. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEPI81701986.