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 0x107ee81024ca5baba66956aeba3bb1309a05c743281bef4e0ae660601529a819. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3fc1fd8-2496-4d5e-9a96-4831f347fa40.json and https://artists.proofprofile.net/proofs/artist/e3fc1fd8-2496-4d5e-9a96-4831f347fa40.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 0x38a6130b37681b02ec7e3d8a777a4ac2917024897bd47d94f4bda6515a66eac6. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ARF036700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7057204a195c838c6d9fd4874bd4428a712dfb2e472158cf9dfdba413ae18c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ARF036700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1a017253de3848a04649f2a065264ce614fcc43ed03dd7268c35e36f76671e. Chain 2 (Bitcoin): anchored in block 957846 (2026-07-13T10:25:43Z), 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/ARF036700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e7401535241ebd28794f3467401168a645a5c15f4edb7c156da5f184c8b8e4. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:02:17Z), 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/ARF036700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662b6e14d450708ee4f784cfbd082d3dc05121943965d8cd01fb47cd403e699b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:47:32Z), 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/ARF036700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2a1eae124b259a0a5de829cb749d6473dc69e3a077342eaa34dc15324f91e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARF036700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ac440c0e741f426a124f0a517508e99dd99664243274593b1a92d573963463. 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/ARF036700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444da08455dd6f04651725db444e292cc8d244c281997c48fc9e672af7984a8d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:18Z), 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/ARF036800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a27f2b23b74ba760719719784abe09430cd0d861cd497c92d990cf66fa8b46b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARF036800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7f0487d66743cf6dd4d4517ac7e7c664e70ce794a5b85d97adea917a57527b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:22Z), 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/ARF036800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5340b555881c6e76e59e1c0a1ad55a045ae7be3d02937c09d5bd0db06d8abeb1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARF036800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa04796610e6caa7f45bbe746ca10ea23af970544e52fd5562186dc1949f449f. 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/ARF036900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf74e3605955d49367f24c49fcf1dd66bb20ca0c0cf2760c332da4f2d7e03ab2. 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/ARF036900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968d23a71a29b82e23bc2642e7a2dd980f08757050fb1909dc66bddb733bc7f4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARF037000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510d12623149d655b5c475be434286022fa26b77ddf49ec47d6abcf097538bff. 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/ARF037000042.
Colección Inolvidable - 20 Grandes Exitos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fb209bf714fd13134bbbedd357c166701efbef01d09b77432b149de1c2f3ec. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:36:10Z), 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/ARF036800042.
Cinco Décadas de Rock Argentino: 1966 - 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec0c91ecc10533d68dc489a80fdd40051a3cf689505ef7574acdfc0e2a91d36. 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/ARF036700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec0c91ecc10533d68dc489a80fdd40051a3cf689505ef7574acdfc0e2a91d36. 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/ARF036700025.
Cinco Décadas de Rock Argentino: Primera Década 1966 - 1976
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec0c91ecc10533d68dc489a80fdd40051a3cf689505ef7574acdfc0e2a91d36. 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/ARF036700025.
Una Celebración del Rock Argentino Vol. 1 (Los Gatos / Los Gatos Salvajes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625413157cb56cf9c9e78dd23771d76ae7691e45edb51796f4e70ec7619100ab. 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/QMFME1522612.