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 0xa3309731d79a149470659e973730082693201f554f598fa04d2eb0583b845fdd. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e8ba46b-323b-4ffd-bc7e-f1c3ac68c1da.json and https://artists.proofprofile.net/proofs/artist/6e8ba46b-323b-4ffd-bc7e-f1c3ac68c1da.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 0x39b06916c440b626d48b4ebd2923ed319c4a90d66c5ef943e6a6ddc0109c27b3. 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/ZA56E2201256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d768b9178c7d1cdc29d5055ba5d122dd916ffe08fa0886e15249f3ea38b74b. 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/ZA56E2201241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5907486337c25e0d5ab1a972059c8d43bbb968ed06b7571e9f5269e49e62980. 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/ZA56E2201246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe34ae62371bc74629045ba271d5159a4613b29172fadf96ff7b4d3654c7f887. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ZA56E2201238.
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 0x84e94f996711a2101b965de4948f1fbb66a64c1fd04a4aa009aabd6674880578. 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/ZA56E2201259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86027876082c05b4a2ab12841b17d9bf7b5222a8e69d1615000e08b53a6eb987. 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/USL4Q1702808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f77877e1adef838b3da90110c8ae7a1570b0869b2df0be1ca0295d791c8682. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USL4Q1702809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67ee474e0e6693e96be1ec2890577251f41d849047c3953195339a4cf706913. 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/USL4Q1702810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e3972984cccede8b18e345963345c1d81f16c49d561f85ac59cb4d14bb3639. 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/USL4Q1702811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fbbfe7004fbb4458aa8b7c39546b48a8c49350cc72f159fc447c8820b25eae. 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/USL4Q1702812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232153d211243ff82155ac3d23ffca0c7e96a91d83f7cc29fe79339566fd6cd8. 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/USL4Q1702813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aaf5eca44c9daa1170c0b5f927ddd3d6ac839b558df0bb1b488d92d91a94c2. 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/USL4Q1702816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdb865f7fff4de13d793ed35fdc48bb3c5e6edcb5c4b828acb50872a8e34d6f. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/USL4Q1702807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed873cbc4f207bf512356cb3d8177f81367d476ef328943f06ab10b0e2573d41. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USL4Q1702814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f09f5ae1d37984bd516df583e6872a07b0d41458a434baf092b10b4f281e61. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USL4Q1702815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55db17427f468bba277e0cb9ed8948ff2f2ad23d384ed4a6bbddfef4fa3417ec. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USL4Q1702817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadda9ea6e9960cc604512cd49f608f67f6d45ccdbd1f9e595420ecea0cbaa14. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USL4Q1702818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15b5f32fcdd93b1a8774c489f06584e31c0b3de547c626853153edaf1a9d0ab. 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/MYTP11500619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a73c5eed7ff319080c0bb1108416f295224a59b71216611bd0f30247ec33f47. 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/MYTP11500620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f7e7bf455e631c070c4579ca4cc18dce10e7dad43e903a85942eec20fb48f5. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/MYTP11500621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3d6d57373d910e33849b4ef21672c6f879349331baf77d884db5afdce43940. 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/USHM22132205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1732e5bf80c2653cf18de36c5dfd86a06f12a1fd881027c951a32ecc85839a. 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/USHM22132206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833deae79771b598966b99c1a92d208ca64bfea78e0f805887072c81ad19f981. 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/USHM22132207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28fbcde54ae6273576355d0c54aea9e2993835932dfd5e0dd8d3c14395a6bbd. 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/USHM22132208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1fc67556c5be54c1d4b6ae7b88f5fa961039aa07b59945105422ba08731971. 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/USHM22132213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08db01f4e02c6479269f6c009f113a94cb2a394ba8d933576e8123930054a3f8. 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/USHM22132214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53acc1f437960d9b0d43d77f7133fab0ffbb865e4c9e506c2cf74b5ccb5cdc74. 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/USHM22132215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c64fcc8ea02f4620ec3e34da089c920f857aa3f7947e8f572e02145683282d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USHM22132209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6243706fc01e70ea8761cc947ada2171b4adbe627897aac007b7dd1ebc4e354. 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/QZK6Q2271881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14e9a785f7b508614f238b33c8d29c2cae7389ee9bd40c53512d97be0b19e94. 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/QZK6Q2271884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5876e14ba4aae493d8f36c3776210d4ec169fd6eadca05aa6f6c2cf513894fc4. 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/QZK6Q2271887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6068d8ceb87d107b4b9b44538870e81cae236a0e634b4c06aaba38204d44f9a3. 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/QZK6Q2271888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331d0fc603907c9169e88d237c80c8c0256c30fdce5feabaaffe8c26a1fcebc0. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZK6Q2271886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ce2323ffc944df89f80d7e29bbd7f5fafd8ca293371895b3234b9fd1243f52. 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/QZAMM1700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890bfe4c0c45f0b4243aa08e93a203bb4058dbd2e76df28b8b3e6958800c9125. 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/QZFZ32041904.
Classic R&B Sound: Studio West Collection, Vol. 2
Grip Tight Productions Presents: Vocals & Hooks Compilation