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 0x6b44e72718c980897a24e1ce6da2f8f764f5cc5b1f150823dde4c313e254329e. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82457d04-02db-4cb2-a5b6-079bae98c4fe.json and https://artists.proofprofile.net/proofs/artist/82457d04-02db-4cb2-a5b6-079bae98c4fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x259dc206558a0ba04ab6f5ec754753ee511f90b19a30cbe2b5afa6f98cc1b5b6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZVEM2538323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b44bed3de4a7afbce48280e0b4b5521555fd86651073098002ddc5388172ae8. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZVEM2538324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724b15c3c0f9e9a7fd13c260c0d07d134835f2da0a4aa200606262f26d8d8ab8. 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/QZVEM2538329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80f2aa37fabd6e7bda1642ba121ce9f381cb29b1d7c4286ac30b2136fa0b877. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZVEM2538331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb670003c747ad022ec4bd42b942194f50e757c46b26dcd024357992cf95c2568. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZVEM2538334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142b4dd1cf7072d5ae02a94e1a4578d90750e0a398625de1663f390945c45cdb. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZVEM2538338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef4be1f7d7df01efddaeda16b08eb9c0b7bf9c1f796f2d72a6ef6261f6af1c5. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZVEM2538339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe007f987380692ef1529d1ba589af1ae2664819b62ae2cf4380a9a84bbc8a5c7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZVEM2538340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa640b150b9c76a49929b239f10cc9e3180a9a1f1a682217561fd94f416e41e2e. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/QZVEM2538341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4399f6f81fcfedda3d0b99339d9423b5241713fbdc4dd4da02a332c1b93e6b2. 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/QZVEM2538342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6b05320ba0ca8e350266cea6e6bb0da3a568e0b083ba196a051f9d4ad91523. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZVEM2538343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5caa2e31032d39e7b862c128b521db3829bb39a04848fa59ef90afce355472. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZVEM2538344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cd3f04b8c27a724f2b075480f1c61ccdff1a5ca27a032a92ccaacf8738ae97. 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/QZVEM2538345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15ad1295543246929607f02e5022e2077b830dd3a609f0d3e445a895d1c09dd. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZVEM2538346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35e9223a707909d06dc4cb6941e16123854422c2a3b23c8ad7fe986e51e040c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZVEM2538349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aeed0e5cadb6813c2b82d925e90e25f98ba58a65cffb9ddeb43a4fccd2aebc9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZVEM2538352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e42624aad44cb12b0a6ea0c2e329215b00f25a6f7b12dc4d7691177bf7ed4f. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZVEM2538356.
Baby Sleep Lullabies for Calm Cribtime Moments
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